CSC-121 Breaker Protection IED Product Guide

Transcription

1 CSC-121 Breaker Protection IED Product Guide

2 Version V1.10 Doc. Code: 0SF (E) Issued Date Copyright owner: Beijing Sifang Automation Co., Ltd. Note: The company keeps the right to perfect the instruction. If equipments do not agree with the instruction at anywhere, please contact our company in time. We will provide you with corresponding service. is registered trademark of Beijing Sifang Automation Co., Ltd. We reserve all rights to this document, even in the event that a patent is issued and a different commercial proprietary right is registered. Improper use, in particular reproduction and dissemination to third parties, is not permitted. This document has been carefully checked. If the user nevertheless detects any errors, he is asked to notify us as soon as possible. The data contained in this manual is intended solely for the IED description and is not to be deemed to be a statement of guaranteed properties. In the interests of our customers, we constantly seek to ensure that our products are developed to the latest technological standards as a result; it is possible that there may be some differences between the hardware/software product and this information product. Manufacturer: Beijing Sifang Automation Co., Ltd.

3 Overview Overview The CSC-121 is selective, reliable and high speed breaker management and backup protection IED (Intelligent Electronic Device), which is used as backup protection cooperating with main protection in different applications such as overhead line, cable, transformer, reactor and busbar protection. It can also work as a dedicated breaker management relay for circuit breaker. The IED has powerful capabilities to cover following applications: Used in a wide range of voltage levels, up to 1000kV Applied to overhead lines and cables, as backup protection IED Applicable in subtransmission network and distribution network Applied to transformer as backup protection IED Breaker management protection for any substation arrangement such as one and half breakers arrangement, double bus arrangement, etc. Work as a dedicated breaker protection for single circuit breaker Suitable for single pole/three poles tripping and closing conditions Communication with station automation system The IED provides a completely protection functions library, including current protection, voltage protection, auto- -reclosing, breaker failure protection, thermal overload protection, etc., to cover most of the requirements of different applications. The wide application flexibility makes the IED an excellent choice for both new installations and retrofitting of the existing stations. 1

4 Feature Protection and monitoring IED with extensive functional library, user configuration possibility and expandable hardware design to meet with user s special requirements A complete protection functions library, include: Overcurrent protection (50, 51, 67) Earth fault protection (50N, 51N, 67N) Neutral earth fault protection (50G, 51G, 67G) Sensitive earth fault protection (50Ns, 51Ns, 67Ns) check (25) Auto-reclosing function for singleand/or three-phase reclosing (79) Voltage transformer secondary circuit supervision (97FF) Current transformer secondary circuit supervision Self-supervision to all modules in the IED Complete information recording: tripping reports, alarm reports, startup reports and general operation records. Any kind of reports can be stored up to 2000 and be memorized in case of power disconnection Negative-sequence overcurrent protection (46) Thermal overload protection (49) Overload protection (50OL) Up to three electric/optical Ethernet ports can be selected to communicate with substation automation system by IEC61850 or IEC protocols Overvoltage protection (59) Undervoltage protection (27) Displacement voltage protection (64) Circuit breaker failure protection (50BF) Poles discordance protection (50PD) Up to two electric RS-485 ports can be selected to communicate with sub- -station automation system by IEC protocol Time synchronization via network (SNTP), pulse and IRIG-B mode Configurable LEDs (Light Emitting Diodes) and output relays satisfied users requirement Dead zone protection (50DZ) STUB protection (50STUB) Synchro-check and energizing Versatile human-machine interface Multifunctional software tool for setting, monitoring, fault recording analysis, configuration, etc. 2

5 Function Protection functions Description ANSI Code IEC Logical Node Name IEC graphical symbol Current protection Overcurrent protection 50,51,67 PTOC Earth fault protection 50N, 51N, 67N PTEF 3I INV> 3I >> 3I >>> I 0INV> I 0>> I 0>>> Neutral earth fault protection Sensitive earth fault protection 50G, 51G, 67G 50Ns, 51Ns, 67Ns 3I NE> 3I NE>> Negative-sequence overcurrent protection 46 Thermal overload protection 49 PTTR Ith Overload protection 50OL PTOC 3I >OL Voltage protection Overvoltage protection 59 PTOV Undervoltage protection 27 PTUV 3U> 3U>> 3U< 3U<< Displacement voltage protection 64 V E> Breaker control function Breaker failure protection 50BF RBRF Dead zone protection 50DZ 3I> BF I 0>BF I 2>BF 3I> DZ I 0>DZ I 2>DZ STUB protection 50STUB PTOC 3I>STUB Poles discordance protection 50PD RPLD 3I< PD I 0>PD I 2>PD Synchro-check and energizing check 25 RSYN 3

6 Function Auto-reclosing 79 RREC O I Single- and/or three-pole tripping 94-1/3 PTRC Secondary system supervision CT secondary circuit supervision VT secondary circuit supervision 97FF Monitoring functions Description Synchro-check reference voltage supervision Auxiliary contacts of circuit breaker supervision Self-supervision Fault recorder Station communication Description Front communication port Isolated RS232 port for maintaining Rear communication port 0-2 isolated electrical RS485 communication ports, support IEC protocol 0-3 Ethernet electrical/optical communication ports, support IEC protocol or IEC protocol Time synchronization port, support GPS pulse or IRIG-B code IED software tools Reading measuring value Reading IED report Functions 4

7 Function Setting IED testing Disturbance recording analysis IED configuration Printing 5

8 Function Application for line 50 3I >>> PIOC 50N I 0>>> PIEF 59 3U> PTOV 64 U E> MEASUREMENT 51/67 3I>>,3I> PTOC 27 3U< PTUV MONITORING 51N/67N I 0>>,I 0> PTEF 49 Ith PTTR 50BF 3I>BF RBRF 50STUB 3I>STUB PTOC 50PD PD RPLD 50DZ STATION COMMUNICATION - RS232/485 - RJ45/FO - IEC IEC RSYN Fault recording 79 O I RREC 94 PTRC 6

9 Function Application for transformer 50BF 3I>BF 49 Ith 50N I 0>>> PD PD 50STUB 3I>STUB RBRF PTTR PIEF RPLD PTOC 50 3I >>> 51/67 3I>>,3I> 51N/67N I 0>>,I 0> 50DZ 46 PIOC PTOC PTEF U> 27 3U< 64 U E> PTRC PTOV PTUV CSC121 IED-1 50G PIOC 51G/67G PTOC HV LV 94 PTRC CSC121 IED-2 MV 50BF 3I>BF 49 Ith PD PD RBRF PTTR RPLD 50DZ 50 3I >>> 51/67 3I>>,3I> 46 50N I 0>>> 51N/67N I 0>>,I 0> PIOC PTOC PIEF PTEF 59 3U> 27 3U< 64 U E> PTOV PTUV CSC121 IED-3 51G/67G 50G 94 PTOC PIOC PTRC 50BF 3I>BF 49 Ith 50N I 0>>> PD PD RBRF PTTR PIOC RPLD 50 3I >>> 51/67 3I>>,3I> 51N/67N I 0>>,I 0> 50DZ 46 PIOC PTOC PTOC 59 3U> PTOV 27 3U< PTUV 64 U E> 7

10 Protection Overcurrent protection (50, 51, 67) The protection provides following features: Two definite time stages One inverse time stage 11 kinds of IEC and ANSI inverse time characteristic curves as well as optional user defined characteristic Selectable directional element characteristic angle to satisfy the different network conditions and applications Each stage can be set individually as directional/non-directional Each stage can be set individually for inrush restraint Cross blocking function for inrush detection Settable maximum inrush current VT secondary circuit supervision for directional protection. Once VT failure happens, the directional stage can be set to be blocked or to be non-directional stage Inrush restraint function The protection relay may detect large magnetizing inrush currents during transformer energizing. In addition to considerable unbalance fundamental current, Inrush current comprises large second harmonic current which does not appear in short circuit current. Therefore, the inrush current may affect the protection functions which operate based on the fundamental component of the measured current. Accordingly, inrush restraint logic is provided to prevent overcurrent protection from mal- -operation. Furthermore, by recognition of the inrush current in one phase, it is possible to set the protection in a way that not only the phase with the considerable inrush current, but also the other phases of the overcurrent protection are blocked for a certain time. This is achieved by cross-blocking feature integrated in the IED. The inrush restraint function has a maximum inrush current setting. Once the measuring current exceeds the setting, the overcurrent protection will not be blocked any longer. Characteristic of direction element The direction detection is performed by determining the position of current vector in directional characteristic. In other word, it is done by comparing phase angle between the fault current and the reference voltage, Figure 1 illustrates the direction detection characteristic for phase A element. Forward I A 90 I A Reverse ΦPh_Char 0 U BC_Ref Figure 1 Direction detection characteristic of overcurrent protection directional element 8

11 Protection where: Ф Ph_Char: The settable characteristic angle The assignment of the applied measuring values used in direction determination has been shown in Table 1 for different types of faults. Table 1 Assignment of applied current and reference voltage for directional element Phase Current Voltage A B C I a Ib I c U bc U ca U ab enabled/disabled by setting Each stage can be set individually as directional/non-directional Directional element can be set to be forward toward the protected object or reverse toward system for all stages Settable directional element characteristic angle to satisfy the different network conditions and applications Each stage can be set individually for inrush restraint Settable maximum inrush current For three-phase short-circuit fault, without any healthy phase, memory voltage values are used to determine direction clearly if the measured voltage values are not sufficient. The detected direction is based on the voltage of previously saved cycles. Earth fault protection (50N, 51N, 67N) VT secondary circuit supervision for directional protection function. Once VT failure happens, the directional stage can be set to be blocked or to be non-directional Zero-sequence current is calculated by summation of 3 phase currents or measured from earth phase CT selectable The Earth fault protection can be used to clear phase to earth faults as system back-up protection. The protection provides following features: Two definite time stages Directional element The earth fault protection adopts zero sequence directional element which compares the zero sequence system quantities: One inverse time stage 11 kinds of the IEC and ANSI inverse time characteristic curves as well as optional user defined characteristic Zero sequence directional element Negative sequence directional element is applied as a complement to zero sequence directional element. It can be 3I 0, current is calculated from the sum of the three phase currents or measured from earth phase CT 3U 0, the voltage is used as reference voltage if it is connected. Otherwise, 3U 0, the zero sequence voltage, calculated from the sum of the three phase voltages 9

12 Protection Bisector -3I0 90 Reverse Bisector -3I 2 90 Reverse 0 0 3U0_Ref Φ0_Char Φ2_Char 3U 2_ Ref Forward -3I 0 Bisector Forward -3I 2 Bisector Figure 2 Direction detection characteristic of where: zero sequence directional element Ф 0_Char: The settable characteristic angle Two operation areas are provided for direction determination, the forward area toward the protected object and the reverse area toward the system, which are shown in Figure 2. For earth fault protection, users can choose negative sequence directional element as the complement of zero sequence directional element. It can be used in case of too low zero sequence voltage due to some fault condition e.g. the unfavorable zero-sequence. The negative sequence directional element characteristic is shown in Figure 3. Figure 3 Direction detection characteristic of where: negative sequence directional element Ф 2_Char: The settable characteristic angle Furthermore, under the VT failure situation, it can be set to block directional earth fault protection or to apply non- -directional earth fault protection. Inrush restraint function The protection relay may detect large magnetizing inrush currents during transformer energizing. In addition to considerable unbalanced fundamental current, inrush current comprises large secondary harmonic current which doesn t appear in short circuit current. Therefore, the inrush current may affect the protection functions which operate based on the fundamental component of the measured current. Accordingly, inrush restraint logic is provided to prevent earth fault protection from maloperation. Since inrush current cannot be more than a specified value, the inrush restraint provides an upper current limit in which blocking does not occur. 10

13 Protection Neutral earth fault protection (50G, 51G, 67G) The neutral earth fault protection focus on phase to earth faults. The measuring current is the one from dedicated neutral CT. The following features are provided: Two definite time stages One inverse time stage 11 kinds of the IEC and ANSI inverse time characteristic curves as well as optional user defined characteristic Each stage can be set to be directional/non-directional independently Zero sequence directional element is applied. Its characteristic is as same as earth fault protection illustrated in Figure 2 Directional element can be set to be forward towarda the protected object or reverse toward system for all stage Settable directional element characteristic angle to satisfy the different network conditions and applications Inrush restraint function can be set for each stage separately Inrush restraint feature The neutral earth fault protection may detect large magnetizing inrush currents flowing when transformer is energized. Directional element Directional determination of neutral earth fault elements adopts the zero sequence directional element as same as the one applied by earth fault protection. The only difference is the measured current, which is measured from the neutral point CT instead of being calculated from three phase currents. Sensitive earth fault protection (50Ns, 51Ns, 67Ns ) The function provides a high sensitive earth fault protection for cables and high impedance grounded or isolated systems where single phase short circuit current is made by capacitive current. Furthermore, the function can operate with/without selective tripping according to fault direction. Sensitive earth fault protection integrated in the IED provides following features: Two definite time stages One inverse time stage Settable maximum inrush current VT secondary circuit supervision for directional protection function Neutral current is measured from dedicated neutral CT 11 kinds of IEC and ANSI inverse time characteristic curves as well as optional user defined characteristic Sensitive earth fault directional element with 3U0/3I0-Φ principle 11

14 Protection Sensitive earth fault directional element with CosΦ principle Settable directional element characteristic angle to satisfy the different network conditions and applications Each stage can be set to be directional, or non-directional independently detection: Directional sensitive earth fault detection based on U 0 /I 0 -Φ measurement (see Figure 4) Forward 90 -I NS Bisector Each stage can be set individually to alarm or trip ΦNS_Char 0 Displacement voltage can be checked to increase function reliability Dedicated sensitive CT 3U0_ Ref VT secondary circuit supervision for directional protection function INS For compensated-earthed system or high resistance earthed system with outgoing cable feeders, the directional protection is provided during a single phase fault. In general, for high impedance earthed system, whenever a feeder has a high capacitive current - normally one greater than 10% of the current limited by the neutral earthing impedance a simple sensitive earth fault relay is no longer enough to give sensitive and selective protection. In this case, the protection system for the feeder consists of a directional sensitive earth fault relay whose threshold can be set to below the capacitive current. In order to discriminate forward and reverse short circuits, the IED provides two methods for sensitive earth fault direction detection which should be utilized to cover all network configurations according to the type of grounding. The following characteristic is possible for directional Figure 4 Direction detection characteristic of the sensitive earth fault directional element by where: U 0/I 0-Φ Ф NS_CA: The settable characteristic angle Based on current vector component (Cos Φ) measurement (see Figure 5). In this way, the relay is sensitive to the active residual current and insensitive to the capacitive current. Forward IS 90 -I S 0 3U0_ Ref 12

15 Protection Figure 5 Direction detection characteristic of the sensitive earth fault directional element by Cos Φ A sensitive current transformer is provided to detect the small earth fault current (weak zero sequence current) in isolated networks or in networks with high impedance earthing where the earth fault current is extremely small. Negative-sequence overcurrent protection (46) A negative sequence (or phase unbalance) protection is essentially provided for the protection of generators, motors and feeders against unbalanced loading that may arise due to phase-to-phase faults. In addition, it is useful in detecting asymmetrical short circuits with magnitudes lower than the maximum load current, especially in delta side of the transformers. The protection provide following features: Two definite time stages One inverse time stage 11 kinds of IEC and ANSI inverse time characteristic curves as well as optional user defined characteristic The first definite stage and inverse stage can be set individually as alarm or trip stages Furthermore, this protection function may be used to detect interruptions, faults, and polarity problems with CT. Thermal overload protection (49) The insulating material surrounding the windings ages rapidly if the temperature exceeds the design limit value. Thus, a thermal protection function is required to supplement the existing winding temperature device. The thermal overload protection estimates winding temperature and thus prevents it from thermal damaging. The thermal overload protection operates based on an approximate replica of the temperature rise in the protected object caused by overload. The memorized thermal replica can be implemented based on thermal models (Cold or Hot Curve) of IEC standard. The thermal overload in the IED is provided with one trip stage as well as one alarm stage. It is possible to set the alarm stage at a certain percentage of the setting value applied at the trip stage. The calculation is performed separately for each phase, based on fundamental component and harmonic components. Overload protection (50OL) The IED supervises load flow in real time. If each phase current is greater than the dedicated setting for a set delay time, the protection will issue alarm. 13

16 Protection Overvoltage protection (59) undervoltage function will be blocked when VT failure happens Settable dropout ratio The overvoltage protection detects abnormally network and machine high voltage conditions. Overvoltage conditions may occur possibly in the power system during abnormal conditions such as no-load, light load, or open line end on long line. The protection can be used as open line end detector or as system voltage supervision normally. The protection provides following features: Two definite time stages Each stage can be set to alarm or trip Measuring voltage between phase- -earth voltage and phase-phase selectable Settable dropout ratio Undervoltage protection (27) The undervoltage protection provides protection against dangerous voltage drops, especially for electric machines. The protection function provides following features: Two definite time stages Each stage can be set to alarm or trip Measuring voltage between phase- -earth voltage and phase-phase selectable Current criteria supervision Circuit breaker aux. contact supervision VT secondary circuit supervision, the Displacement voltage protection (64) The displacement voltage protection is able to monitor the displacement voltage to detect the earth fault in power system. It is usually applied in non-solidly earthed networks where the earth fault current is limited. The displacement voltage 3U 0 can be either directly measured from VT or calculated based on connected three phases to earth voltages. In the latter case, the three voltages transformers input must be connected in an earth-wye configuration. The protection provide following features: Two definite time stages Each stage can be set to alarm or trip 3U 0 based on calculated summation of 3 phase voltage or measured injected residual voltage Breaker failure protection (50BF) The circuit breaker failure protection is designed to detect failure of the circuit breaker during a fault clearance. It ensures fast back-up tripping of surrounding breakers by tripping relevant bus sections. The protection can be single- or three-phase started to allow use with single phase tripping applications. Once a circuit breaker operating failure 14

17 Protection occurs on a feeder/transformer, the bus section which the feeder/transformer is connected with can be selectively isolated by the protection. In addition a transfer trip signal is issued to trip the remote end circuit breaker of the feeder. The current criteria are in combination with three phase current, zero and negative sequence current to achieve a higher security. The function can be set to give single- or three phase re-tripping of the local breaker to avoid unnecessary tripping of surrounding breakers in the case of two available trip coils. Additionally, during single pole tripping, stage 1 is able to re-trip three phase with settable delay time after single phase re-tripping failure. by protection relay while CB auxiliary contacts indicate the CB is open. Internal/ external initiation Self-adaptive for bus side CT or line side CT When one bus side CT of feeder or transformer is applied, once a fault occurs in the dead zone, the IED trips the relevant busbar zone. Tripping logic is illustrated in Figure 6. Bus IFAULT Trip Two trip stages (local and surrounding breaker tripping) Transfer trip command to the remote line end in second stage Internal/ external initiation Single/three phase CBF initiation Line1 Line2 LineN Opened CB Closed CB Figure 6 Tripping logic applying bus side CT Selectable CB Aux contacts checking Current criteria checking (including phase current, zero and negative sequence current) Dead zone protection (50DZ) When one line side CT is applied and a fault occurs in the dead zone, protection relay sends a transfer trip to remote end relay to isolate the fault. Tripping logic is illustrated in Figure 7. The IED provides dead zone protection to protect the area, between circuit breaker and CT in the case that CB is open. Therefore, by occurrence of a fault in dead zone, the short circuit current is measured 15

18 Protection Inter trip Bus Figure 8 Tripping logic applying transformer side CT STUB protection (50STUB) IFAULT Line1 Line2 LineN Trip Relay Opened CB Closed CB Figure 7 Tripping logic applying line side CT When one transformer side CT is applied and a fault occurs in the dead zone, protection relay trip the circuit breakers of the others transformer winding. Tripping logic is illustrated in The VT is mostly installed at line side of transmission lines. Therefore, for the case that transmission line is taken out of service and the line disconnector is opened, the distance protection will not be able to operate and must be blocked. The STUB protection protects the zone between the CTs and the open disconnector. The STUB protection is enabled when the open position of the disconnector is connected to IED binary input. The function supports one definite stage which related concept is shown in Figure 9. Figure 8. Bus A Delay trip Bus B trip IFAULT IFAULT Bus1 Line A Line B IFAULT Legend: Closed CB Ln L1 T1 Bus2 Figure 9 Tripping logic of STUB protection Bus3 Opened CB Closed CB 16

19 Protection Poles discordance protection (50PD) The phase segregated operating circuit breakers can be in different positions (close-open) due to electrical or mechanical failures during the system normal operation. The protection operates based on information from auxiliary contacts of the circuit breaker with additional criteria. The protection performs following functions: 3 phase CB Aux contacts supervision Current criteria checking (including phase current, zero and negative sequence current) Synchro-check and energizing check (25) The synchro-check function checks voltages of the circuit breaker sides for synchronism conditions. The synchronization function ensures the stability of the network in three phase reclosing condition. To do this, the two side voltages of the circuit breaker are compared in terms of magnitude, phase angle and frequency differences. Additionally, closing can be done safely in conditions that at least one side of the CB has dead voltage. Available for automatic reclosing (internally or externally) Based on voltage/ angle/ frequency difference Synchro-check conditions: Synch-check Energizing check, and synch-check if energizing check failure Override Modes of energizing check: Dead V 4 and dead V 3Ph Dead V 4 and live V 3Ph Live V 4 and dead V 3Ph Synchro-check reference voltage supervision If the automatic reclosing is set for synchronization check or energizing check, during the automatic reclosing period, the synchronization condition of the voltages between both sides of CB cannot be met, an alarm will be issued after default time delay. Auto-reclosing (79) For restoration of the normal service after a fault an auto reclosing attempt is mostly made for overhead lines. Experiences show that about 85% of faults have transient nature and will disappear after an auto reclosing attempt is performed. This means that the line can be re-energized in a short period. The reconnection is accomplished after a dead time via the automatic reclosing function. If the fault is permanent or short circuit arc has not been disappeared, the protection will re-trip the breaker. Main features of the Auto-reclosing are as follows: Up to 4 shots (selectable) Individually settable dead time for three phase and single phase fault and for each shot 17

20 Protection External AR initiation Single/three phase AR operation CB ready supervision CB Aux. contact supervision Cooperation with internal synch-check function for reclosing command Secondary system supervision Current transformer secondary circuit supervision Open or short circuited CT cores can cause unwanted operation of some protection functions such as earth fault current and negative sequence current functions. Interruption of the CT secondary circuit is detected based on zero-sequence current. Once CT failure happens, each stage of earth fault protection is blocked. Voltage transformer secondary circuit supervision A measured voltage failure resulting from a broken conductor or a short circuit fault in the secondary circuit of voltage transformer may result in unwanted operation of the protection functions which work based on voltage criteria. VT failure supervision function is provided to block these protection functions and enable the backup protection functions. The features of the function are as follows: Symmetrical/asymmetrical VT failure detection 3-phase AC voltage MCB monitoring 1-phase AC voltage MCB monitoring Zero and negative sequence current monitoring Applicable in solid grounded, compensated or isolated networks 18

21 Monitoring Synchro-check reference voltage supervision If the automatic reclosing is set for synchronization check or energizing check, during the automatic reclosing period, the synchronization condition of the voltages between both sides of CB cannot be met, an alarm will be issued after default time delay. Self-supervision All modules can perform self-supervision to its key hardware components and program, as soon as energizing. Parts of the modules are self-supervised in real time. All internal faults or abnormal conditions will initiate an alarm. The fatal faults among them will result in the whole IED blocked CPU module and communication module perform real time inter-supervision. Therefore communication interruption between them is detected and related alarm will be given CRC checks for the setting, program and configuration, etc. 19

22 Communication Station communication Overview The IED is able to connect to one or more substation level systems or equipments simultaneously, through the communication ports with communication protocols supported. (Shown in Figure 10) Front communication port There is a serial RS232 port on the front plate of all the IEDs. Through this port, the IED can be connected to the personal computer for setting, testing, and configuration using the dedicated Sifang software tool. RS485 communication ports Up to 2 isolated electrical RS485 communication ports are provided to connect with substation automation system. These two ports can work in parallel for IEC Ethernet communication ports Up to 3 electrical or optical Ethernet communication ports are provided to connect with substation automation system. These two out of three ports can work in parallel for protocol, IEC61850 or IEC Communication protocol The IED supports station communication with IEC and IED protocols. By means of IEC61850, GOOSE peer- to peer communication make it possible that bay IEDs can exchange information to each other directly. And a simple master-less system can be set up for bay and system interlocking and other interactive function. Server or Work Station 1 Server or Work Station 2 Work Station 3 Switch Work Station 4 Net 1: IEC61850/IEC103,Ethernet Port A Switch Net 2: IEC61850/IEC103,Ethernet Port B Switch Switch Switch Gateway or converter Switch Gateway or converter Net 3: IEC103, RS485 Port A Net 4: IEC103, RS485 Port B Figure 10 Connection example for multi-networks of station automation system Note: All four ports can work in parallel 20

23 Communication Time synchronization port All IEDs feature a permanently integrated electrical time synchronization port. It can be used to feed timing telegrams in IRIG-B or pulse format into the IEDs via time synchronization receivers. The IED can adapt the second or minute pulse in the pulse mode automatically. Meanwhile, SNTP network time synchronization can be applied. The Figure 11 illustrates the optional time synchronization modes. SNTP IRIG-B Pulse Ethernet port IRIG-B port Binary input Figure 11 Time synchronizing modes 21

24 Software tool A user-friendly software tool is offered for engineering, setting, disturbance analysis and monitoring. It provides versatile functionalities required throughout the life cycle of protection IEDs. Its features are as follows: diagrams, vector diagrams, bar charts and data sheet. Device administration in projects with freely configurable hierarchies for any substation and electrical power station topology Intelligent plausibility checks rule out incorrect input Modification, import and export of parameter sets sorted by protection functions, with setting logicality check Precise fault analysis with visualization of fault records in curves, circle Graphical visualization of charac- -teristics and zone diagrams with direct manipulation of the curves Password-protected access for different jobs such as parameter setting, commissioning and controlling (authorized staff only) Testing and diagnostic functions decisive support in the commissioning phase 22

25 Hardware Front plate The whole front plate is divided into zones, each of which has a well-defined 1 functionality: 5 4 CSC Figure 12 IED front plate 1 Liquid crystal display (LCD) 2 LEDs 3 Shortcut function keys 4 Arrow keys 5 Reset key 6 Quit key 7 Set key 8 RS232 communication port Rear plate Test port For BIM and BOM Ethernet ports X10 PSM X 9 X8 X7 X6 X5 X4 X 3 COM X2 CPU X1 AIM Figure 13 Rear plate of the protection IED 23

26 Hardware Modules Analogue Input Module (AIM) The analogue input module is used to galvanically separate and transform the secondary currents and voltages generated by the measuring transformers. CPU Module (CPU) The CPU module handles all protection functions and logic. The redundant A/D sampling channels are equipped. By comparing the data from redundant sampling channels, any sampling data errors and the channel hardware faults can be detected immediately and the proper alarm and blocking is initiated in time. Communication Module (COM) The communication module performs communication between the internal protection system and external equipments such as HMI, engineering workstation, substation automation system, RTU, etc., to transmit remote metering, remote signaling, SOE, event reports and record data. Up to 3 channels isolated electrical or optical Ethernet ports and up to 2 channels RS485 serial communication ports can be provided in communication module to meet the communication demands of different substation automation system and RTU at the same time. The time synchronization port is equipped, which can work in pulse mode or IRIG-B mode. SNTP mode can be applied through communication port. In addition, a series printer port is also reserved. Binary Input Module (BIM) The binary input module is used to connect the input signals and alarm signals such as the auxiliary contacts of the circuit breaker (CB), etc. Binary Output Module (BOM) The binary output modules mainly provide tripping output contacts, initiating output contacts and signaling output contacts. All the tripping output relays have contacts with a high switching capacity and are blocked by protection startup elements. Each output relay can be configured to satisfy the demands of users. Power Supply Module (PSM) The power supply module is used to provide the correct internal voltages and full isolation between the terminal and the battery system. 24

27 Hardware Dimension C E A D B Figure 14 4U, 19 case with rear cover Table 2 Dimension of the IED case Legend A B C D E Dimension (mm) E C D A B Figure 15 Cut-out on the panel Table 3 Dimension of the cutout for IED mounting Legend A B C D E Dimension (mm)

28 Connection A. Typical rear terminals diagram X1 a01 b01 a02 b02 a03 b03 a04 b04 a05 b05 a06 b06 a07 b07 a08 b08 a09 b09 a10 b10 a11 b11 a12 b12 X IA IB IC I0 I4 U4 UB UC UA UN RS485-2B RS485-2A RS485-1B RS485-1A GPS GPS - GND Ethernet Port 1 - RJ45 Ethernet Port 2 - RJ45 1) CSC-121 Output relay 01 Output relay 02 Output relay 03 Output relay 04 Output relay 05 Output relay 06 Output relay 07 Output relay 08 Output relay 09 Output relay 10 Output relay 11 Output relay 12 Output relay 13 Output relay 14 Output relay 15 Output relay 16 BI01 BI02 BI03 BI04 BI05 BI06 BI07 BI08 BI09 BI10 BI11 BI12 BI13 BI14 BI15 BI16 BI17 BI18 BI19 BI20 BI21 BI22 BI23 BI24 BI25 BI26 BI27 BI28 BI29 BI30 BI-COM1(-) BI-COM2(-) X4 a02 c02 a04 c04 a06 c06 a08 c08 a10 c10 a12 c12 a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 X5 a02 c02 a04 c04 a06 c06 a08 c08 a10 c10 a12 c12 a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 Note: 1) Alternative Ethernet ports for station communication are 2 ST optical fiber ports, shown as following, Ethernet Port 1 - ST Ethernet Port 2 - ST 26

29 Connection CSC-121 X6 a02 c02 a04 c04 a06 c06 a08 c08 a10 c10 a12 c12 a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 Output relay 01 Output relay 02 Output relay 03 Output relay 04 Output relay 05 Output relay 06 Output relay 07 Output relay 08 Output relay 09 Output relay 10 Output relay 11 Output relay 12 Output relay 13 Output relay 14 Output relay 15 Output relay 16 Output relay 01 Output relay 02 Output relay 03 Output relay 04 Output relay 05 Output relay 06 Output relay 07 Output relay 08 Output relay 09 Output relay 10 Output relay 11 Output relay 12 Output relay 13 Output relay 14 Output relay 15 Output relay 16 X8 a02 c02 a04 c04 a06 c06 a08 c08 a10 c10 a12 c12 a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 X7 a02 c02 a04 c04 a06 c06 a08 c08 a10 c10 a12 c12 a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 Output relay 01 Output relay 02 Output relay 03 Output relay 04 Output relay 05 Output relay 06 Output relay 07 Output relay 08 Output relay 09 Output relay 10 Output relay 11 Output relay 12 Output relay 13 Output relay 14 Output relay 15 Output relay 16 1) X9 a02 c02 a04 c04 a06 c06 a08 c08 a10 c10 a12 c12 a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 Note : 1) X9 is optional terminal set, for additional binary output module ordered by user. 27

30 Connection CSC-121 Power failure alarm relay 1 Power failure alarm relay 2 DC 24V + output DC 24V - output AUX DC + input AUX DC - input Terminal for earthing Terminal for earthing X10 a02 c02 a04 c04 a06 c06 a08 c08 a10 c10 a12 c12 a14 c14 a16 c16 a18 c18 a20 c20 a22 c22 a24 c24 a26 c26 a28 c28 a30 c30 a32 c32 28

31 Connection B. Typical analogue inputs connection for line A B C * * * a01 b01 a02 b02 a03 b03 a04 b04 Protection IED IA IB IC IN a12 a11 b11 b12 UA UB UC UN a10 b10 U4 29

32 Connection C. Typical analogue inputs connection for transformer A B C Protection IED a12 a11 b11 b12 UA UB UC UN * * * a01 b01 a02 b02 a03 b03 a04 b04 IA IB IC IN A B C * b05 a05 I 5 A B C 30

33 Connection D. Typical analogue inputs connection for sensitive earth fault protection A B C Protection IED * * * a01 b01 a02 b02 a03 b03 a04 b04 IA IB IC IN a12 a11 b11 b12 UA UB UC UN * b05 a05 I 5 31

34 Technical data Frequency Item Standard Data Rated system frequency IEC Hz or 60Hz Internal current transformer Item Standard Data Rated current I r IEC or 5 A Nominal current range Nominal current range of sensitive CT 0.05 I r to 30 I r to 1 A Power consumption (per phase) 0.1 VA at I r = 1 A; 0.5 VA at I r = 5 A 0.5 VA for sensitive CT Thermal overload capability IEC IEC I r for 1 s 4 I r continuous Internal voltage transformer Item Standard Data Rated voltage V r (ph-ph) IEC V /110 V Nominal range (ph-e) Power consumption at V r = 110 V IEC DL/T V to 120 V 0.1 VA per phase Thermal overload capability (phase-neutral voltage) IEC DL/T V r, for 10s 1.5 V r, continuous Auxiliary voltage Item Standard Data Rated auxiliary voltage U aux IEC to 250V DC Permissible tolerance IEC ±%20 U aux Power consumption at quiescent state Power consumption at maximum load IEC IEC W per power supply module 60 W per power supply module 32

35 Technical data Inrush Current IEC T 10 ms/i 25 A per power supply module, Binary inputs Item Standard Data Input voltage range IEC /125 V DC 220/250 V DC Threshold1: guarantee operation IEC V, for 220/250V DC 77V, for 110V/125V DC Threshold2: uncertain operation IEC V, for 220/250V DC; 66V, for 110V/125V DC Response time/reset time IEC Software provides de-bounce time Power consumption, energized IEC Max. 0.5 W/input, 110V DC Max. 1 W/input, 220V DC Binary outputs Item Standard Data Max. system voltage IEC V DC/AC Current carrying capacity IEC A continuous, 30A,200ms ON, 15s OFF Making capacity IEC W(DC) at inductive load with L/R>40 ms 1000 VA(AC) Breaking capacity IEC VDC, 0.15A, at L/R 40 ms 110VDC, 0.30A, at L/R 40 ms Mechanical endurance, Unloaded IEC ,000,000 cycles (3 Hz switching frequency) Mechanical endurance, making IEC cycles Mechanical endurance, breaking IEC cycles Specification state verification IEC IEC IEC UL/CSA TŰV 33

36 Technical data Contact circuit resistance measurement Open Contact insulation test (AC Dielectric strength) IEC IEC IEC IEC IEC mΩ AC1000V 1min Maximum temperature of parts and materials IEC Front communication port Item Number 1 Data Connection Communication speed Max. length of communication cable Isolated, RS232; front panel, 9-pin subminiature connector, for software tools 9600 baud 15 m RS485 communication port Item Data Number 0 to 2 Connection Max. length of communication cable Test voltage 2-wire connector Rear port in communication module 1.0 km 500 V AC against earth For IEC protocol Communication speed Factory setting 9600 baud, Min baud, Max baud Ethernet communication port Item Electrical communication port Data Number 0 to 3 Connection Max. length of communication cable RJ45 connector Rear port in communication module 100m For IEC protocol 34

37 Technical data Communication speed 100 Mbit/s For IEC protocol Communication speed 100 Mbit/s Optical communication port ( optional ) Number 0 to 2 Connection Optical cable type Max. length of communication cable SC connector Rear port in communication module Multi-mode 2.0km IEC protocol Communication speed 100 Mbit/s IEC protocol Communication speed 100 Mbit/s Time synchronization Mode IRIG-B signal format Item Pulse mode IRIG-B000 Data Connection Voltage levels 2-wire connector Rear port in communication module differential input Environmental influence Item Recommended permanent operating temperature Storage and transport temperature limit Permissible humidity Data -10 C to +55 C (Legibility of display may be impaired above +55 C /+131 F) -25 C to +70 C 95 % of relative humidity IED design Case size Weight Item 4U 19inch 10kg Data 35

38 Technical data Product safety-related Tests Item Standard Data Over voltage category IEC Category III Pollution degree IEC Degree 2 Insulation IEC Basic insulation Degree of protection (IP) Power frequency high voltage withstand test Impulse voltage test Insulation resistance IEC IEC IEC EN ANSI C37.90 GB/T DL/T IEC IEC EN ANSI C37.90 GB/T DL/T IEC IEC EN ANSI C37.90 GB/T Front plate: IP40 Rear, side, top and bottom: IP 30 2KV, 50Hz 2.8kV DC between the following circuits: auxiliary power supply CT / VT inputs binary inputs binary outputs case earth 500V, 50Hz between the following circuits: Communication ports to case earth time synchronization terminals to case earth 5kV (1.2/50μs, 0.5J) If U i 63V 1kV if U i<63v Tested between the following circuits: auxiliary power supply CT / VT inputs binary inputs binary outputs case earth Note: U i: Rated voltage 100 MΩ at 500 VDC 36

39 Technical data DL/T Protective bonding resistance IEC Ω Fire withstand/flammability IEC Class V2 Electromagnetic immunity tests Item Standard Data 1 MHz burst immunity test IEC IEC IEC EN ANSI/IEEE C Electrostatic discharge IEC IEC EN Class III 2.5 kv CM ; 1 kv DM Tested on the following circuits: auxiliary power supply CT / VT inputs binary inputs binary outputs 1 kv CM ; 0 kv DM Tested on the following circuits: communication ports Level 4 8 kv contact discharge; 15 kv air gap discharge; both polarities; 150 pf; R i = 330 Ω Radiated electromagnetic field disturbance test Radiated electromagnetic field disturbance test Electric fast transient/burst immunity test IEC EN IEC EN IEC , IEC EN ANSI/IEEE C Frequency sweep: 80 MHz 1 GHz; 1.4 GHz 2.7 GHz spot frequencies: 80 MHz; 160 MHz; 380 MHz; 450 MHz; 900 MHz; 1850 MHz; 2150 MHz 10 V/m AM, 80%, 1 khz Pulse-modulated 10 V/m, 900 MHz; repetition rate 200 Hz, on duration 50 % Class A, 4KV Tested on the following circuits: auxiliary power supply CT / VT inputs binary inputs binary outputs 37

40 Technical data Class A, 1KV Tested on the following circuits: communication ports Surge immunity test IEC IEC Conduct immunity test IEC IEC kV L-E 2.0kV L-L Tested on the following circuits: auxiliary power supply CT / VT inputs binary inputs binary outputs 500V L-E Tested on the following circuits: communication ports Frequency sweep: 150 khz 80 MHz spot frequencies: 27 MHz and 68 MHz 10 V AM, 80%, 1 khz Power frequency immunity test IEC Class A 300 V CM 150 V DM Power frequency magnetic field test IEC Level 4 30 A/m cont. / 300 A/m 1 s to 3 s 100 khz burst immunity test IEC kv CM ; 1 kv DM Tested on the following circuits: auxiliary power supply CT / VT inputs binary inputs binary outputs 1 kv CM ; 0 kv DM Tested on the following circuits: communication ports DC voltage interruption test Item Standard Data DC voltage dips IEC % reduction 20 ms 38

41 Technical data 60% reduction 200 ms 30% reduction 500 ms DC voltage interruptions IEC % reduction 5 s DC voltage ripple IEC %, twice rated frequency DC voltage gradual shut down /start-up IEC s shut down ramp 5 min power off 60 s start-up ramp DC voltage reverse polarity IEC min Electromagnetic emission test Item Standard Data Radiated emission Conducted emission IEC EN CISPR22 IEC EN CISPR22 30MHz to 1GHz ( IT device may up to 5 GHz) 0.15MHz to 30MHz Mechanical tests Item Standard Data Sinusoidal Vibration response test Sinusoidal Vibration endurance test Shock response test Shock withstand test IEC EN IEC EN IEC EN IEC EN Class 1 10 Hz to 60 Hz: mm 60 Hz to 150 Hz: 1 g 1 sweep cycle in each axis Relay energized Class 1 10 Hz to 150 Hz: 1 g 20 sweep cycle in each axis Relay non-energized Class 1 5 g, 11 ms duration 3 shocks in both directions of 3 axes Relay energized Class 1 15 g, 11 ms duration 3 shocks in both directions of 3 axes 39

42 Technical data Relay non-energized Bump test IEC Class 1 10 g, 16 ms duration 1000 shocks in both directions of 3 axes Relay non-energized Seismic test IEC Class 1 X-axis 1 Hz to 8/9 Hz: 7.5 mm X-axis 8/9 Hz to 35 Hz :2 g Y-axis 1 Hz to 8/9 Hz: 3.75 mm Y-axis 8/9 Hz to 35 Hz :1 g 1 sweep cycle in each axis, Relay energized Climatic tests Item Standard Data Cold test - Operation IEC C, 16 hours, rated load IEC Cold test Storage IEC IEC C, 16 hours Dry heat test Operation [IEC C, 16 hours, rated load IEC Dry heat test Storage IEC C, 16 hours IEC Change of temperature IEC IEC Test Nb, figure 2, 5 cycles -10 C / +55 C Damp heat static test IEC C, 93% r.h. 10 days, rated load IEC Damp heat cyclic test IEC IEC C, 93% r.h. 6 cycles, rated load CE Certificate EMC Directive Low voltage directive Item Data EN and EN (EMC Council Directive 2004/108/EC) EN (Low-voltage directive 2006/95 EC). 40

43 Functions Technical data NOTE: Ir: CT rated secondary current, 1A or 5A; Overcurrent protection (ANSI 50, 51, 67) Item Rang or Value Tolerance Definite time characteristics Current 0.08 Ir to Ir ±3% setting or ±0.02Ir Time delay 0.00 to 60.00s, step 0.01s Reset time approx. 40ms Reset ratio Approx at I/In 0.5 Inverse time characteristics ±1% setting or +40ms, at 200% operating setting Current 0.08 Ir to Ir ±3% setting or ±0.02Ir IEC standard Normal inverse; Very inverse; Extremely inverse; Long inverse ANSI Inverse; Short inverse; Long inverse; Moderately inverse; Very inverse; Extremely inverse; Definite inverse user-defined characteristic T= Time factor of inverse time, A to 200.0s, step 0.001s ±5% setting + 40ms, at 2 <I/I SETTING < 20, in accordance with IEC ±5% setting + 40ms, at 2 <I/ISETTING < 20, in accordance with ANSI/IEEE C37.112, ±5% setting + 40ms, at 2 <I/I SETTING < 20, in accordance with IEC Delay of inverse time, B to 60.00s, step 0.01s Index of inverse time, P to 10.00, step set time Multiplier for step n: k 0.05 to 999.0, step 0.01 Minimum operating time 20ms Maximum operating time 100s Reset mode instantaneous Reset time approx. 40ms, Directional element Operating area range ±3, at phase to phase 41

44 Technical data Characteristic angle 0 to 90, step 1 voltage >1V Earth fault protection (ANSI 50N, 51N, 67N) Item Rang or value Tolerance Definite time characteristic Current 0.08 Ir to Ir ±3% setting or ±0.02Ir Time delay 0.00 to 60.00s, step 0.01s Reset time approx. 40ms Reset ratio Approx at I/Ir 0.5 Inverse time characteristics ±1% setting or +40ms, at 200% operating setting Current 0.08 Ir to Ir ±3% setting or ±0.02Ir IEC standard ANSI user-defined characteristic Time factor of inverse time, A Normal inverse; Very inverse; Extremely inverse; Long inverse Inverse; Short inverse; Long inverse; Moderately inverse; Very inverse; Extremely inverse; Definite inverse T= to 200.0s, step 0.001s IEC ±5% setting + 40ms, at 2 <I/I SETTING < 20 ANSI/IEEE C37.112, ±5% setting + 40ms, at 2 <I/I SETTING < 20 IEC ±5% setting + 40ms, at 2 <I/I SETTING < 20 Delay of inverse time, B to 60.00s, step 0.01s Index of inverse time, P to 10.00, step set time Multiplier for step n: k 0.05 to 999.0, step 0.01 Minimum operating time Maximum operating time Reset mode 20ms 100s instantaneous Reset time approx. 40ms Directional element Operating area range of zero sequence directional element Characteristic angle 0 to 90, step 1 ±3, at 3U0 1V 42

45 Technical data Operating area range of negative sequence directional element Characteristic angle 50 to 90, step 1 ±3, at 3U2 2V Neutral earth fault protection (50G, 51G, 67G) Item Rang or value Tolerance Definite time characteristic Current 0.08 Ir to Ir ±3% setting or ±0.02Ir Time delay 0.00 to 60.00s, step 0.01s Reset time approx. 40ms Reset ratio Approx at I/Ir 0.5 Inverse time characteristics ±1% setting or +40ms, at 200% operating setting Current 0.08 Ir to Ir ±3% setting or ±0.02Ir IEC standard ANSI user-defined characteristic Time factor of inverse time, A Normal inverse; Very inverse; Extremely inverse; Long inverse Inverse; Short inverse; Long inverse; Moderately inverse; Very inverse; Extremely inverse; Definite inverse T= to 200.0s, step 0.001s ±5% setting + 40ms, at 2 <I/I SETTING < 20, in accordance with IEC ±5% setting + 40ms, at 2 <I/ISETTING < 20, in accordance with ANSI/IEEE C37.112, ±5% setting + 40ms, at 2 <I/I SETTING < 20, in accordance with IEC Delay of inverse time, B to 60.00s, step 0.01s Index of inverse time, P to 10.00, step set time Multiplier for step n: k 0.05 to 999.0, step 0.01 Minimum operating time Maximum operating time Reset mode Reset time Operating area range 20ms 100s instantaneous approx. 40ms Directional element ±3, at 3U0 1V 43

46 Technical data Characteristic angle 0 to 90, step 1 Operating area range Characteristic angle 0 to 90, step 1 ±3, at 3U2 2V Sensitive/neutral earth fault protection (ANSI 50Ns, 51Ns, 67Ns) Item Range or value Tolerance Definite time characteristic Current from sensitive CT input to A, step A ±3 % setting value or 1 ma Current from neutral CT input 0.08 Ir to Ir ±3 % setting value or 0.02 Ir Time delay 0.00 to 60.00, step 0.01 s ±1.5 % setting value or +40 ms, at 200% operating setting Reset ratio Approx when I/In 0.5 Reset time Approx. 40 ms Inverse time characteristics Current from sensitive input to A, step A ±3 % setting value or 1 ma Current from normal input 0.08 Ir to Ir ±3 % setting value or 0.02 Ir IEC standard Normal inverse; Very inverse; Extremely inverse; Long inverse ANSI Inverse; Short inverse; Long inverse; Moderately inverse; Very inverse; Extremely inverse; Definite inverse user-defined characteristic T= Time factor of inverse time, A to 200.0s, step 0.001s ±5% setting + 40ms, at 2 <I/I SETTING < 20, in accordance with IEC ±5% setting + 40ms, at 2 <I/ISETTING < 20, in accordance with ANSI/IEEE C37.112, ±5% setting + 40ms, at 2 <I/I SETTING < 20, in accordance with IEC Delay of inverse time, B to 60.00s, step 0.01s Index of inverse time, P to 10.00, step set time Multiplier for step n: k 0.05 to 999.0, step 0.01 Minimum operating time Maximum operating time Reset mode Reset time 20ms 100s instantaneous approx. 40ms Directional element for sensitive earth-fault protection 44

47 Technical data principles I cos Φ Φ (V0 / I0) Direction measurement IE and VE measured or 3V0 calculated 3U0 Minimum voltage threshold 2.00 to V, step 0.01 V ±3 % setting for measured voltage; ±5 % setting for calculated voltage Characteristic angle Φ_SEFChar 0.0 to 90.0, step 1 ±3 Operating area range ±3 Negative sequence overcurrent protection (ANSI 46) Item Rang or Value Tolerance Definite time characteristic Current 0.08 Ir to Ir ±3% setting value or ±0.02Ir Time delay 0.00 to 60.00, step 0.01 s ±1% setting or +40ms, at 200% operating setting Reset time 40 ms Reset ratio Approx for I2 /Ir > 0.5 Inverse time characteristics Current 0.08 Ir to Ir ±3% setting or ±0.02Ir IEC standard ANSI user-defined characteristic Normal inverse; Very inverse; Extremely inverse; Long inverse Inverse; Short inverse; Long inverse; Moderately inverse; Very inverse; Extremely inverse; Definite inverse T= ±5% setting + 40ms, at 2 <I/I SETTING < 20, in accordance with IEC ±5% setting + 40ms, at 2 <I/ISETTING < 20, in accordance with ANSI/IEEE C37.112, ±5% setting + 40ms, at 2 <I/I SETTING < 20, in accordance with IEC Time factor of inverse time, A to 200.0s, step 0.001s Delay of inverse time, B to 60.00s, step 0.01s Index of inverse time, P to 10.00, step set time Multiplier for step n: k 0.05 to 999.0, step

48 Technical data Minimum operating time Maximum operating time Reset time 20ms 100s approx. 40ms Inrush restraint function Item Range or value Tolerance Upper function limit Max current for inrush restraint Ratio of 2 nd harmonic current to fundamental component current Cross-block (IL1, IL2, IL3) (settable time) 0.25 Ir to Ir ±3% setting value or ±0.02Ir 0.10 to 0.45, step s to s, step 0.01s ±1% setting or +40ms Thermal overload protection (ANSI-49) Item Rang or Value Tolerance Current 0.1 Ir to 5.00 Ir ±3% setting or ±0.02Ir Thermal heating time constant 1 to 9999 s Thermal cooling time constant 1 to 9999 s IEC cold curve t ln I I 2 2 eq I 2 eq IEC , ±5% setting or +40ms IEC hot curve t I ln I 2 2 eq I P IEC , 2 2 eq I ±5% setting or +40ms Breaker failure protection (ANSI 50 BF) Item Rang or Value Tolerance phase current Negative sequence current zero sequence current 0.08 Ir to Ir ±3% setting or ±0.02Ir Time delay of stage s to s, step 0.01s ±1% setting or +25 ms, at Time delay of stage s to s, step 0.01s 200% operating setting Reset time of stage 1 < 20ms 46

49 Technical data Dead zone protection (ANSI 50DZ) Item Rang or Value Tolerance Current 0.08 Ir to Ir ±3% setting or ±0.02Ir Time delay 0.00s to 32.00s, step 0.01s ±1% setting or +40 ms, at 200% operating setting Pole discordance protection (ANSI 50PD) Item Rang or Value Tolerance Current 0.08 Ir to Ir ±3% setting or ±0.02Ir Time delay 0.00s to 60.00s, step 0.01s ±1% setting or +40 ms, at 200% operating setting STUB protection (ANSI 50STUB) Item Rang or Value Tolerance Current 0.08 Ir to Ir ±3% setting or ±0.02Ir Time delay 0.00s to 60.00s, step 0.01s ±1% setting or +40 ms, at 200% operating setting Undervoltage protection (ANSI 27) Item Rang or Value Tolerance Voltage connection Phase-to-phase voltages or phase-to-earth voltages ±3 % setting or ±1 V Phase to earth voltage 5 to 75 V, step 1 V ±3 % setting or ±1 V Phase to phase voltage 10 to 150 V, step 1 V ±3 % setting or ±1 V Reset ratio 1.01 to 2.00, step 0.01 ±3 % setting Time delay 0.00 to s, step 0.01 s ±1 % setting or +50 ms, at 80% operating setting Current criteria 0.08 to 2.00 Ir ±3% setting or ±0.02Ir Reset time 50 ms Overvoltage protection (ANSI 59) Item Rang or Value Tolerance Voltage connection Phase-to-phase voltages or ±3 % setting or ±1 V 47

50 Technical data phase-to-earth voltages Phase to earth voltage 40 to 100 V, step 1 V ±3 % setting or ±1 V Phase to phase voltage 80 to 200 V, step 1 V ±3 % setting or ±1 V Reset ratio 0.90 to 0.99, step 0.01 ±3 % setting Time delay 0.00 to s, step 0.01s ±1 % setting or +50 ms, at 120% operating setting Reset time <40ms Voltage displacement protection (ANSI 64) Item Rang or Value Tolerance Pickup threshold 3V0 2 to 100 V, step 1 V ± 5 % setting value or ±1 V (calculated) Time delay 0.00 to s, step 0.01s ±1 % setting or +50 ms, at 120% operating setting Reset ratio Approx Synchro-check and voltage check (ANSI 25) Operating mode Item Rang or Value Tolerance Synchronization check: Synch-check Energizing check, and synch-check if energizing check failure Override Energizing check: Dead V4 and dead V 3Ph Dead V4 and live V 3Ph Live V4 and dead V 3Ph Voltage threshold of dead line or bus Voltage threshold of live line or bus V-measurement Voltage difference 10 to 50 V (phase to earth), step 1 V 30 to 65 V (phase to earth), step 1 V 1 to 40 V (phase-to-earth), steps 1 V ± 3 % setting or 1 V ± 3 % setting or 1 V ± 1V Δf-measurement (f2>f1; f2<f1) 0.02 to 2.00 Hz, step, 0.01 Hz, ± 20 mhz Δα-measurement (α2>α1; α2<α1) 1 to 80, step, 1 ± 3 48

51 Technical data Minimum measuring time 0.05 to s, step,0.01 s, ± 1.5 % setting value or +60 ms Maximum synch-check extension time 0.05 to s, step,0.01 s, ± 1 % setting value or +50 ms Auto-Reclosing (ANSI 79) Item Rang or Value Tolerance Number of reclosing shots Up to 4 Shot 1 to 4 is individually selectable AR initiating functions Dead time, separated setting for shots 1 to 4 Reclaim time Blocking duration time (AR reset time) Circuit breaker ready supervision time Dead time extension for synch-check (Max. SYNT EXT) Internal protection functions External binary input 0.05 s to s, step 0.01 s ± 1 % setting value or +50 ms 0.50 s to 60.00s, step 0.01 s 0.05 s to 60.00s, step 0.01 s 0.50 s to s, step 0.01 s 0.05 s to s, step 0.01 s VT secondary circuit supervision (97FF) Item Range or value Tolerances Minimum current 0.08Ir to 0.20Ir, step 0.01A ±3% setting or ±0.02Ir Minimum zero or negative sequence current 0.08Ir to 0.20Ir, step 0.01A ±5% setting or ±0.02Ir Maximum phase to earth voltage 7.0V to 20.0V, step 0.01V ±3% setting or ±1 V Maximum phase to phase voltage 10.0V to 30.0V, step 0.01V ±3% setting or ±1 V Normal phase to earth voltage 40.0V to 65.0V, step 0.01V ±3% setting or ±1 V 49

52 Ordering Pre-configure scheme Pre-configure scheme M01 M02 M03 M04 M05 Application (N1) Full TB LB B B Overcurrent protection (50, 51, 67) Earth fault protection (50N, 51N, 67N) Neutral earth fault protection(50g, 51G, 67G) or sensitive earth-fault protection (50Ns, 51Ns, 67Ns) Negative-sequence overcurrent protection (46) 1 1 Thermal overload protection (49) Overload protection (50OL) Overvoltage protection (59) Under voltage protection (27) Voltage displacement voltage protection (64) 1 1 Breaker failure protection (50BF) Dead zone protection (50DZ) STUB protection (50 STUB) Poles discordance protection (50PD) Synchro-check and energizing check (25) 1 1 Auto-reclosing (79) 1 1 Single- and/or three-pole tripping(94) CT secondary circuit supervision VT secondary circuit supervision (97FF) Analogue input module (5I + 4U) CPU module Communication module (with Ethernet interfaces, RS485 interfaces and time synchronizing interface) Binary input module (30 BI) Binary output modules (16 relays for tripping and initiation) Binary output modules (16 relays for signal)

53 Ordering Power supply module Programmable LEDs Case, 4U, NOTE: n : Quantity of standard function or standard hardware, n= 1, 2,.; (n) : Quantity of optional function or optional hardware, n= 1, 2,.; N1: Application: Full- Full functions version; TB- For transformer backup protection LB- For line backup protection B For breaker protection 51

54 Ordering Ordering code No.1~16 No.17~36 C S C L F T Pre-configure scheme Pre-configure scheme code Pre-configure scheme number 1 Pre-configure scheme number 2 M 0~9 0~9 HMI Language (L) note English Russian French Portuguese Spanish Rated Frequency (F) 50 Hz 5 60 Hz 6 Station Communication Protocols (T) Ethernet interface:iec ; RS485 interface: IEC Ethernet interface:iec ; RS485 interface: IEC Note: Chinese is always offered as default HMI language. 52

55 Ordering No.1~16 No.17~22 No.23~36 C S C A M C Slot 1 Analogue Input Module (A) 5I (1A)+4U 5I (5A)+4U 4I (1A)+ISEF (0.2A)+4U 4I (5A)+ISEF (0.2A)+4U Slot 2 CPU Module 1 (M) Dedicated to CSC121 3 Slot 3 Communication module (C) 3 electrical Ethernet ports, 1 RS485 ports, IRIG-B 1 3 electrical Ethernet ports, 1 RS485 ports, Pulse 2 2 electrical Ethernet ports, 2 RS485 ports, IRIG-B 3 2 electrical Ethernet ports, 2 RS485 ports, Pulse 4 2 optical Ethernet ports, 2 RS485 ports, IRIG-B 5 2 optical Ethernet ports, 2 RS485 ports, Pulse 6 53

56 Ordering No.1~22 No.23~30 No.31~36 C S C I O Slot 4 Binary Input Module (I) 30BI (220V DC), with startup blocking relay 1 30BI (110V DC), with startup blocking relay 2 Slot 5 Binary Output Module (O) 16 relays for tripping 1 Slot 6 Binary Output Module (O) 16 relays for tripping 1 16 relays (with 19 contacts) for signalling 3 x Slot 7 Binary Output Module (O) 16 relays for tripping 16 relays (with 19 contacts) for signalling 1 3 x Slot 8 Binary Output Module (O) 16 relays for tripping 16 relays (with 19 contacts) for signalling 1 3 x Slot 9 Binary Output Module (O) 16 relays for tripping 16 relays (with 19 contacts) for signalling 1 3 x 54

57 Ordering No.1~30 No.31~36 C S C P K Z Slot 10 Power Supply Module (P) 110V - 250V DC 1 Case and Front Plate (K) Case: 4U, 19' Front plate: Medium size LCD; 20 LEDs 3 Accessories (Z) x 55

58 Address: No.9 Shangdi 4th Street, Haidian District, Beijing, P.R.C Tel: , ext.8998 Fax: Website: