VAM I/O units. Publication version: VIO/en M/D003. User Manual

Transcription

1 VAM I/O units Publication version: User Manual

2 Trace back information: Workspace Main version a Checked in 0-0- Skribenta version..

3 Table of Contents Table of Contents General.... Legal notice.... Safety information.... EU directive compliance... Introduction.... Purpose.... Main properties... User interface VAM L fiber sensor I/O unit.... VAM LX fiber sensor I/O unit.... VAM 0L point sensor I/O unit.... VAM 0LD point sensor I/O unit.... VAM L point sensor I/O unit.... VAM LD point sensor I/O unit.... VAM C current I/O unit VAM CD current I/O unit VAMP R trip multiplier relay... Programming switches.... Switches for arc sensor I/O units.... Switches for current I/O units... Adjusting the overcurrent setting... BI/BO connection... Connections VAM L / VAM LX interfaces VAM 0L interfaces.... VAM 0LD interfaces.... VAM L interfaces.... VAM LD interfaces.... VAM C interfaces.... VAM CD interfaces.... VAMP R interfaces... I/O Technical data.... Connections.... Auxiliary power supply Digital inputs Trip contacts Disturbance tests...

4 Table of Contents. Electrical safety tests.... Environmental conditions.... Package....9 Casing... 9 Construction Dimensional drawings VAM L / LX Din rail mounting VAM 0L Din rail mounting VAM 0LD Flush mounting VAM L Din rail mounting VAM LD Flush mounting VAM C Din rail mounting VAM CD Flush mounting VAMP R Din rail mounting VA DA VA EH VYX VYX I/O unit mounting and wiring VAM 0L, VAM L, VAM C, VAM L, VAM LX VAM 0LD, VAM LD, VAM CD Connecting the VAMP I/O units Connecting the secondary circuits of the current transformers (VAM C / VAM CD only) Connecting the trip circuits of the circuit breakers Connecting between the central unit and the I/O unit Connecting separate auxiliary supplies VAMP R Wiring multiple central units Arc sensors VA DA VA EH ARC-SLx VA DP... 0 Order information... Glossary

5 General General. Legal notice Copyright 0 Schneider Electric. All rights reserved. Disclaimer No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this document. This document is not intended as an instruction manual for untrained persons. This document gives instructions on device installation, commissioning and operation. However, the manual cannot cover all conceivable circumstances or include detailed information on all topics. In the event of questions or specific problems, do not take any action without proper authorization. Contact Schneider Electric and request the necessary information. Contact information rue Joseph Monier 90 Rueil-Malmaison FRANCE Phone: + (0) Fax: + (0) Safety information Important Information Read these instructions carefully and look at the equipment to become familiar with the device before trying to install, operate, service or maintain it. The following special messages may appear throughout this bulletin or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure. The addition of either symbol to a Danger or Warning safety label indicates that an electrical hazard exists which will result in personal injury if the instructions are not followed. This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

6 . Safety information General DANGER DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING WARNING indicates a potentially hazardous situation which, if not avoided, can result in death or serious injury. CAUTI CAUTI indicates a potentially hazardous situation which, if not avoided, can result in minor or moderate injury. NOTICE NOTICE is used to address practices not related to physical injury. User qualification Electrical equipment should be installed, operated, serviced, and maintained only by trained and qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material. A qualified person is one who has skills and knowledge related to the construction, installation, and operation of electrical equipment and has received safety training to recognize and avoid the hazards involved. Password protection Use the IED's password protection feature to protect untrained persons from interacting with this device. WARNING WORKING ENERGIZED EQUIPMENT Do not choose lower Personal Protection Equipment while working on energized equipment. Failure to follow these instructions can result in death or serious injury.

7 General. EU directive compliance. EU directive compliance EMC compliance 0/0/EU Compliance with the European Commission's EMC Directive. Product Specific Standards were used to establish conformity: EN 0-: 0 Product safety 0//EU Compliance with the European Commission's Low Voltage Directive. Compliance is demonstrated by reference to generic safety standards: EN0-:0

8 Introduction Introduction This User s Manual contains a functional description of the VAM I/O units and technical data.. Purpose The main purpose of the VAM I/O units is to detect arc light or short circuit current and deliver this information (zone information) to the arc protection central unit and the other VAM I/O units. Additionally VAM I/O units can be used for tripping appropriate circuit breakers. NOTE: For applications in the US, Canada and Mexico, use specific documents reviewed in line with the requirements of the relevant regulatory authorities. Please contact our local Schneider Electric office for assistance.. Main properties Arc flash protection system is a modular system consisting of a central unit, I/O units and arc sensors. Due to its modularity, the system is suitable for a range of arc protection applications, from simple systems with one central unit and one I/O unit to more complex solutions comprising several central units used for selective arc protection. The I/O unit VAM 0L / VAM 0LD, VAM L / VAM LD serves as link between the system s point sensors and the central unit. Each I/O unit has connections for ten arc sensors, one portable pin sensor and one trip output. The I/O unit VAM L/VAMLX serves as link between the system s fibre sensors and the central unit. Each I/O unit has connections for three arc sensors, one pin sensor and one trip output. The I/O unit VAM C / VAM CD serves as link between the system s current inputs and the central unit. Each I/O unit has connections for three current transformers and one trip output. The arc sensor VA DA is activated by strong light. The sensor transforms the light information into the current signal, which is forwarded through the I/O unit to the central unit. The arc sensor VA EH also operates on the same principle. The pin sensor VA DP has the same functions as an arc sensor but can be temporarily connected to an I/O unit. The sensor can be fixed to the breast pocket of a technician to improve safety when working with live switchgear.

9 Introduction. Main properties The door mounted VAM I/O units with the letter D in the type designations VAM 0LD, VAM LD and VAM CD are door mounted versions for the corresponding VAM 0L, VAM L and VAM C units. The functionality is exactly the same. 9

10 User interface User interface Usually, there is no need to touch the front panel during normal operation, since all the necessary information can be read from the central unit display. However, after a new installation or a system expand you will need to program certain functions (zone/address, trip output) in the I/O unit. NOTE: If you unfasten the terminal blocks during installation, remember to tighten the fixing screws after installation! Also tighten the screws even if you did not unfasten the blocks. 0

11 User interface. VAM L fiber sensor I/O unit. VAM L fiber sensor I/O unit VAML 0 9 X Zone SW OFF L>ext/Int Latch L+I/L SENSOR OK 9 ACT 0 TRIP SENSOR INPUTS CH CH CH R T R T R T Figure.: VAM L fiber sensor I/O unit front panel. Connection for portable arc sensor (VA DP). Programming switches. POWER indicator light, indicates that the supply voltages of each component are in order.. indicator light, lit when the central units and I/O units are communicating.. ERROR indicator light, indicates an internal fault detected by the component s self-diagnostics. Such faults include faulty arc sensor or changes in the amount of sensors.. Connector sockets for the VX00 modular cables. LED lights indicating sensor activation. Terminals for three fibre sensors 9. Portable arc sensor VA DP connected and operational 0. Portable arc sensor activated. I/O unit trip relay activated. Terminal block for external communication and BI/O channels and trip signal

12 . VAM LX fiber sensor I/O unit User interface. VAM LX fiber sensor I/O unit VAM LX 0 9 X L>ext/Int Latch L+I/L Zone SW OFF SENSOR OK 9 ACT 0 TRIP SENSOR INPUTS CH CH CH R T R T R T CH CH CH Adj Adj Adj Min. Max. Min. Max. Min. Max. Figure.: VAM LX fiber sensor I/O unit front panel. Connection for portable arc sensor (VA DP). Programming switches. POWER indicator light, indicates that the supply voltages of each component are in order.. indicator light, lit when the central units and I/O units are communicating.. ERROR indicator light, indicates an internal fault detected by the component s self-diagnostics. Such faults include faulty arc sensor or changes in the amount of sensors.. Connector sockets for the VX00 modular cables. LED lights indicating sensor activation. Terminals for three fibre sensors 9. Portable arc sensor VA DP connected and operational 0. Portable arc sensor activated. I/O unit trip relay activated. Terminal block for external communication and BI/O channels and trip signal. Sensitivity adjustments for each fibre sensor channels

13 User interface. VAM 0L point sensor I/O unit. VAM 0L point sensor I/O unit VAM 0L 0 9 X L> ext/int Latch L+I/L Zone SW OFF SENSOR OK 9 ACT 0 TRIP SENSOR INPUTS 9 0 X Figure.: VAM 0L point sensor I/O unit front panel. Connection for portable arc sensor (VA DP). Programming switches. POWER indicator light, indicates that the supply voltages of each component are in order.. indicator light, lit when the central unit and I/O units are communicating.. ERROR indicator light, indicates an internal fault detected by the component s self-diagnostics. Such faults include faulty arc sensor or changes in the amount of sensors.. Connector sockets for the VX00 modular cables. LED lights indicating sensor activation. Terminal block for ten arc sensors 9. Portable arc sensor VA DP connected and operational 0. Portable arc sensor activated. I/O unit trip relay activated. Terminal block for external communication and BI/O channels and trip signal

14 O N. VAM 0LD point sensor I/O unit User interface. VAM 0LD point sensor I/O unit VAM 0LD Point sensor I/O unit SENSOR INPUTS 9 0 ADDRESS NR 0. BB FEEDER. CB FEEDER TRIP. CC FEEDER. BB FEEDER. CB FEEDER. CC FEEDER. BB FEEDER 9. BB FEEDER 9 9. BB FEEDER 9 FRT PANEL 0. TIE BREAKER ID X SENSOR INPUTS SW 0 ACT 9 OK SENSOR Zone L/L+I Latch L> Int/ Ext BACK PANEL X 9 0 Figure.: VAM 0LD point sensor I/O unit front and back panel. Connection for portable arc sensor (VA DP). Programming switches. POWER indicator light, indicates that the supply voltages of each component are in order.. indicator light, lit when the central unit and I/O units are communicating.. ERROR indicator light, indicates an internal fault detected by the component s self-diagnostics. Such faults include faulty arc sensor or changes in the amount of sensors.. Connector sockets for the VX00 modular cables. LED lights indicating sensor activation. Terminal block for ten arc sensors

15 User interface. VAM 0LD point sensor I/O unit 9. Portable arc sensor VA DP connected and operational 0. Portable arc sensor activated. I/O unit trip relay activated. Terminal block for external communication and BI/O channels and trip signal. Text pocket for sensor specific labels.

16 . VAM L point sensor I/O unit User interface. VAM L point sensor I/O unit VAM L is primary design for selective feeder trip applications. The unit comprises electromechanical trip normally open contacts and one trip alarm change over contact. The unit has 0 Arc sensor inputs. Tree sensors (of the ten) inputs are dedicated, and are controlling their own trip relay. The unit is ideal for selective trip of cable compartment in case of an ARC fault. VAM L can selectively handle feeders. The rest of the sensors can then supervise the busbar and breaker compartments and will operate in the zone selected by the unit address switches. VAM L 0 9 X Addr SW OFF L>ext/int Latch L+I / L Zone SENSOR OK 9 ACT 0 TRIP SENSOR INPUTS 9 0 X Figure.: VAM L point sensor I/O unit fron panel. Connection for portable arc sensor (VA DP). Programming switches. POWER indicator light, indicates that the supply voltages of each component are in order.. indicator light, lit when the central unit and I/O units are communicating.. ERROR indicator light, indicates an internal fault detected by the component s self-diagnostics. Such faults include faulty arc sensor or changes in the amount of sensors.. Connector sockets for the VX00 modular cables. LED lights indicating sensor activation. Terminal block for ten arc sensors 9. Portable arc sensor VA DP connected and operational 0. Portable arc sensor activated. I/O unit trip relays activated. Terminal block for output relay

17 O N User interface. VAM LD point sensor I/O unit. VAM LD point sensor I/O unit VAM LD Point sensor I/O unit SENSOR INPUTS 9 0 ADDRESS NR 0. BB FEEDER. CB FEEDER TRIP. CC FEEDER. BB FEEDER. CB FEEDER. CC FEEDER. BB FEEDER 9. BB FEEDER 9 9. BB FEEDER 9 FRT PANEL 0. TIE BREAKER ID X SENSOR INPUTS SW 0 ACT 9 OK SENSOR Zone L/L+I Latch L> Int/ Ext BACK PANEL X 9 0 Figure.: VAM LD point sensor I/O unit front and back panel. Connection for portable arc sensor (VA DP). Programming switches. POWER indicator light, indicates that the supply voltages of each component are in order.. indicator light, lit when the central unit and I/O units are communicating.. ERROR indicator light, indicates an internal fault detected by the component s self-diagnostics. Such faults include faulty arc sensor or changes in the amount of sensors.. Connector sockets for the VX00 modular cables. LED lights indicating sensor activation. Terminal block for ten arc sensors

18 . VAM LD point sensor I/O unit User interface 9. Portable arc sensor VA DP connected and operational 0. Portable arc sensor activated. I/O unit trip relays activated. Terminal block for output relays. Text pocket for sensor specific labels.

19 User interface. VAM C current I/O unit. VAM C current I/O unit OFF Zone Zone Zone Zone VAMC SW X 0 9 X TRIP CURRENT TRANSFORMER L L L xin L/L L/Io 9 0 SW Latch A/A I>out I>in xin.0 L,L L/Io Figure.: VAM C current I/O unit front panel. Programming switches. POWER indicator light, indicates the supply voltages of each component are in order.. indicator light, lit when the central units and I/O units are communicating.. ERROR indicator light, indicates an internal fault detected by the component s self-diagnostics. Such faults include faulty current transformer or phase current unbalance.. Connector sockets for the VX00 modular cables. LED lights indicating that I> stage has started. Terminals for three current transformers. Current transformer programming switches 9. Overcurrent setting knob (I L, I L ), setting range 0. x I N 0. Overcurrent setting knob (I L, I 0 ), setting range 0.0 x I N. I/O unit trip relay activated. Terminal block for external communication and BI/O channels and trip signal. Indicator leds for current setting 9

20 O N. VAM CD current I/O unit User interface. VAM CD current I/O unit VAM CD Current I/O unit ---CURRENTTRANSFORMER--- L L L FEEDER: F0 ADDRESS: ZE: & I> PICK-UP: X In OTHER: I> EXT TRIP FRT PANEL 0 9 L/Io L/L SW xin 0 9 BACK PANEL X 9 0 X SW Zone Zone Zone Zone Figure.: VAM CD current I/O unit front and back panel. Programming switches. POWER indicator light, indicates the supply voltages of each component are in order.. indicator light, lit when the central units and I/O units are communicating.. ERROR indicator light, indicates an internal fault detected by the component s self-diagnostics. Such faults include faulty current transformer or phase current unbalance.. Connector sockets for the VX00 modular cables. LED lights indicating that I> stage has started. Terminals for three current transformers. Current transformer programming switches 0

21 User interface.9 VAMP R trip multiplier relay 9. Overcurrent setting knob (I L, I L ), setting range 0. x I N 0. Overcurrent setting knob (I L, I 0 ), setting range 0.0 x I N. I/O unit trip relay activated. Terminal block for external communication and BI/O channels and trip signal. Indicator leds for current setting. Text pocket.9 VAMP R trip multiplier relay VAMP R 9 X Power Trip Trip TRIP TRIP Vac/dc Vdc INPUTS + OUTPUT TRIPGROUP TRIPGROUP NO NC NO NC NO NC NO NC SF ALARM NO NC X VAMP R frontplate Figure.9: VAMP R trip multiplier relay front panel. POWER LED, indicates that the external operating voltage of + Vdc is connected.. Terminals for external operating voltage (+ Vdc). Can be supplied by central units or I/O units.. Terminals for incoming trip signal (e.g. Vdc from VAM I/O unit binary output, groups). Control voltage range is Vad/dc.. Terminals for outgoing trip signals ( potential-free contacts, normally open, normally closed).

22 Programming switches Programming switches Before system implementation, check the positions of the programming switches in accordance with the following basic principles: Each I/O unit connected to the communication bus has its own address (each I/O unit have an unique address). Set the programming switches before connecting the supply voltage. If you have to change the switch positions once the supply voltage has been connected, disconnect the supply voltage to the unit in question for the duration of the programming and re-configure the system. If position of the switch is changed, re-install the system again in the central unit.. Switches for arc sensor I/O units The programming switches of the I/O units are used to determine the unit address and trip relay function. The system accommodates up to units. Eight addresses are reserved for each protection zone: Zone addresses 0 Zone addresses Zone addresses Zone addresses The programming switches have different weight factors. To create an address for the I/O unit, turn switches with different values to the position and calculate the sum of their weight factors. The following table shows the weight factors of each programming switch. Table.: Programming switch weight factors, *) VAM 0L / VAM 0LD, VAM L / VAM LD, and VAM L / VAM LX only Switch No. *) Weight factor NOTE: Note the position of the VAM LD, VAM 0LD and VAM CD dip switches.

23 Programming switches. Switches for arc sensor I/O units VAML/VAMLX VAMLD/VAM0LD SW OFF L>ext/Int Latch L+I/L Zone SW OFF SENSOR OK ACT TRIP ACT OK SENSOR Zone L/L+I Latch L> ext/int VAM0L/VAML Zone SW OFF L>ext/int Latch L+I/L SENSOR OK ACT TRIP Figure.: Programming switches for VAM 0L, VAM 0LD, VAM L, VAM LD, VAM L and VAM LX VAM 0L / VAM 0LD, VAM L / VAM LX Switch determines which light activation activates the arc stage. When the switch position is, the arc stage only activates on the light information provided by the unit's own sensors. In OFF position the arc stage activates on the light information received from any unit in the same protection zone. Switch determines the trip relay latch. When the switch is in position the trip relay remains engaged after the arc trip until the fault is acknowledged at the central unit s panel. In the OFF position the trip relay follows the arc fault. Switch determines the arc trip criteria. When the switch is in position the trip is based on light information only; in OFF position both fault currents exceeding the current limit and light information are required.

24 . Switches for current I/O units Programming switches VAM L / VAM LD When the L>ext/int DIP switch is in L>int position, the output relays are only activated by dedicated sensors. SENSOR activates T. SENSOR activates T. SENSOR activates T. SENSORS to 0 are normally sending light information to system according to zone setting. If the switch is in L>ext position, all output relays are also controlled by the selected zone information. This activation source can be any sensor channel to 0 or from an external I/O unit configured to the same zone.. Switches for current I/O units The address range for current I/O units is (), -. Do not use address, because in this case the current I/O unit operates in CENTRAL UNIT mode and the actual central unit must be set to SUB-UNIT mode. To determine the address of a current I/O unit, add the sum of the weight factors to (for example, programming switch values total, address of the current I/O unit + = 9). NOTE: Do not use as the unit address if system have central unit. Other programming switches have different functions in different units, as described below.

25 Programming switches. Switches for current I/O units VAM C / VAM CD VAMC SW Zone Zone Zone Zone OFF TRIP SW Latch A/A I>out I>in L,L L/Io xin VAM CD SW OFF Zone Zone Zone Zone SW Latch A/A I>out I>in L,L M.0 L/Io xin Figure.: Programming switches of VAM C / VAM CD Table.: VAMC dipswitches weight factors SW NO: Weight factor

26 . Switches for current I/O units Programming switches Table.: SW switch settings Switch Definition Zone Zone Zone Zone Addr Addr Addr Addr Description System operating zone (light information) System operating zone (light information) System operating zone (light information) System operating zone (light information) Address weighting coefficient Address weighting coefficient Address weighting coefficient Address weighting coefficient Table.: SW switch settings Switch *) As in CT Definition Latch A / A * I> out I> in Description Position 0 (switch down): trip relay is only operational while the protection is activated Position (switch up): trip relay changes to latching status after trip Position 0 (switch down): rated secondary current of the current transformer is A Position (switch up): rated secondary current of the current transformer is A Position 0 (switch down): unit does not transmit the current criteria to other units Position (switch up): unit transmits the current criteria to other units Position 0 (switch down): unit does not receive the current criteria from other units Position (switch up): unit receives the current criteria from other units

27 Adjusting the overcurrent setting Adjusting the overcurrent setting The principles for changing the current setting in VAM C units are the same as for the central unit. You can see the estimated current setting from the led bar on the right side of the unit. The most accurate way of setting the current limit for the unit is as follows: Turn the potentiometer to the maximum value. Feed a test current corresponding to the required setting using a testing device. Lower the setting until the current activation indicator LED of the I/O unit and / or the I>ext indicator LED in VAMP the central unit are / is lit. 0 9 X VAMC SW Zone Zone Zone Zone TRIP CURRENT TRANSFORMER L L L xin POWER ERROR X L/L L/Io VAMc conn Figure.: Adjusting the current setting in VAM C

28 BI/BO connection BI/BO connection Each I/O unit also has a BI/O bus. The light I/O units (VAM 0L / VAM 0LD, VAM L / VAM LD, VAM L / VAM LX) can transmit trip signal to the central unit or current I/O unit. The current I/O unit (VAM C / VAM CD) can receive the light information and send the current information either to other I/O units or the multiplying relay. NOTE: The DI/DO on the VAM units are fast BI/BO signals. The following DI and DO connections are included in the standard delivery of VAM 0L and VAM L / VAM LX: DI GND Trip out GND X- X- X-0 X-9 Zone shift (, (, (, ( Trip signal, V dc Trip signal earth The following DI and DO connections are included in the standard delivery of VAM C units: L>in GND Trip out GND X- X- X-0 GND Light input, V dc Light input earth Trip signal Trip signal earth NOTE: L>in light input in VAM C / VAM CD (X- &X-) is master light input. This means that incoming light zone dip switch settings do not matter and unit trips when this input is active and there is current over the set limit.

29 Connections Connections Grounding of VAM I/O units must be made according to the Construction section in the document. ELECTRICAL SHOCK DANGER Always connect the protective grounding before connecting the power supply. Failure to follow these instructions can result in death or serious injury. 9

30 . VAM L / VAM LX interfaces Connections. VAM L / VAM LX interfaces VAML/LX 0 9 X L>ext/int Latch L+I/L Zone SW SENSOR OK ACT TRIP POWER ERROR SENSOR INPUTS CH CH CH R T R T R T X-R: X-T: X-R: X-T: X-R: X-T: Fiber receiver connection Fiber transmitter connection Fiber receiver connection Fiber transmitter connection Fiber receiver connection Fiber transmitter connection Channel Channel Channel X-: +V supply from master unit or external power supply X-: GND X-: X-: CAN-L CAN-H Zone information (L>, I>) =, X-: X-: Serial B Serial A master slave com X-: DI GND Zone change X-: DI (-Vdc) ( -> ; -> ; -> ; -> ) X-9: X-0: DO GND DO +Vdc Trip signal (DI&DO) X-: X-: + Temp sensor - Temp sensor Not in use X-: X-: X-: Trip relay (NO) X-: Trip relay (NO) 0

31 Connections. VAM 0L interfaces. VAM 0L interfaces VAM 0L 0 9 X L> ext/int Latch L+I/L Zone SW SENSOR OK ACT TRIP POWER ERROR SENSOR INPUTS 9 0 X VAM0L conn X-, : arc sensor channel X-, : arc sensor channel X-, : arc sensor channel X-, : arc sensor channel X-9, 0: arc sensor channel X-, : arc sensor channel X-, : arc sensor channel X-, : arc sensor channel X-, : arc sensor channel 9 X-9, 0: arc sensor channel 0 X-: +V supply from masterunit or external power supply X-: GND X-: X-: CAN-L CAN-H Zone information (L>, I>) =, X-: X-: Serial B Serial A Master slave com X-: DI GND Zone change X-: DI ( Vdc) ( -> ; ->; -> ; -> ) X-9: X-0: DO GND DO +Vdc Trip signal X-: X-: + Temp sensor - Temp sensor Not in use X-: X-: X-: Trip relay (NO) X-: Trip relay (NO)

32 O N. VAM 0LD interfaces Connections. VAM 0LD interfaces X SENSOR INPUTS SW ACT OK SENSOR Zone L/L+I Latch L> Int/ Ext X 9 0 X-, : arc sensor channel X-, : arc sensor channel X-, : arc sensor channel X-, : arc sensor channel X-9, 0: arc sensor channel X-, : arc sensor channel X-, : arc sensor channel X-, : arc sensor channel X-, : arc sensor channel 9 X-9, 0: arc sensor channel 0 X-: +V supply from masterunit or external power supply X-: GND X-: X-: CAN-L CAN-H Zone information (L>, I>) =, X-: X-: Serial B Serial A Master slave com X-: DI GND Zone change X-: DI (-Vdc) ( -> ; ->; -> ; -> ) X-9: X-0: DO GND DO +Vdc Trip signal X-: X-: + Temp sensor - Temp sensor Not in use X-: X-: X-: Trip relay (NO) X-: Trip relay (NO)

33 Connections. VAM L interfaces. VAM L interfaces VAM L 0 9 X SW OFF L> ext/int Latch L+I/L Zone SENSOR OK ACT TRIP POWER ERROR SENSOR INPUTS 9 0 X VAML conn X-, : X-, : X-, : X-, : X-9, 0: X-, : X-, : X-, : X-, : X-9, 0: X-: X-: arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel 9 arc sensor channel 0 +v supply from masterunit or external power supply GND X-: X-: X-: X-: X-: X-: X-9: X-0: X-: X-: X-: X-: X-: X-: NO NC Trip relay (NO) Trip relay (NO) Trip relay (NO) Trip relay (NO) Trip relay (NO) Trip relay (NO) Alarm

34 O N. VAM LD interfaces Connections. VAM LD interfaces X SENSOR INPUTS SW ACT OK SENSOR Zone L/L+I Latch L> Int/ Ext X 9 0 X-, : X-, : X-, : X-, : X-9, 0: X-, : X-, : X-, : X-, : X-9, 0: X-: X-: X-: X-: X-: X-: X-: X-: X-9: X-0: X-: X-: X-: X-: X-: X-: arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel arc sensor channel 9 arc sensor channel 0 +v supply from masterunit or external power supply GND NO NC Trip relay (NO) Trip relay (NO) Trip relay (NO) Trip relay (NO) Trip relay (NO) Trip relay (NO) Alarm

35 Connections. VAM C interfaces. VAM C interfaces 0 9 X VAMC SW Zone Zone Zone Zone TRIP.0 POWER.0 xin.0 ERROR 0. CURRENT TRANSFORMER L L L 0. X L/L L/Io VAMc conn X-, : Current input IL X-, : Current input IL / Io X-9, : Current input IL X-: +V supply from master unit or external power supply X-: GND X-: X-: CAN-L CAN-H Zone information (L>, I>) =, X-: X-: Serial B Serial A master slave com X-: X-: DI GND DI (-Vdc) L> X-9: X-0: DO GND DO +Vdc TRIP X-: X-: X-: X-: X-: Trip relay (NO) X-: Trip relay (NO)

36 N. VAM CD interfaces Connections. VAM CD interfaces L/Io L/L SW 0 9 X.0.0 SW xin O Zone Zone Zone Zone X 9 0 X-, : Current input IL X-, : Current input IL / Io X-9, : Current input IL X-: +V supply from master unit or external power supply X-: GND X-: X-: CAN-L CAN-H Zone information (L>, I>) =, X-: X-: Serial B Serial A master slave com X-: X-: DI GND DI (-Vdc) L> X-9: X-0: DO GND DO +Vdc TRIP X-: X-: X-: X-: X-: Trip relay (NO) X-: Trip relay (NO)

37 Connections. VAMP R interfaces. VAMP R interfaces VAMP R 9 X Power Trip Trip TRIP TRIP Vac/dc Vdc INPUTS + OUTPUT TRIP GROUP TRIP GROUP NO NC NO NC NO NC NO NC SF ALARM NO NC X X-, : X-, : X-, : X-, : X-9, 0: X-, : X-, : X-, : X-: X-: X-9: X-0: X-: X-: X-: X-: X-: X-: X-: X-: X-9: X-0: X-: X-: Trip relay (NO), Trip group. Trip relay (NC), Trip group. Trip relay (NO), Trip group. Trip relay (NC), Trip group. Trip relay (NO), Trip group. Trip relay (NC), Trip group. Trip relay (NO), Trip group. Trip relay (NC), Trip group. NO NC Aux voltage supply +Vdc GND Aux voltage supply +Vdc GND Aux voltage supply +Vdc GND TRIP. Input Vac/dc TRIP. Input Vac/dc TRIP. Input Vac/dc TRIP. Input Vac/dc SF Alarm relay Trip group. Trip group.

38 I/O Technical data I/O Technical data. Connections Table.: VAM L Sensor connections fibre loop sensors (type ARC-SLx) portable arc sensor (type VA DP) Table.: VAM LX Sensor connections fibre loop sensors (type ARC-SLx) - sensitivity adjust range compared to L 0. (max). (min) portable arc sensor (type VA DP) Table.: VAM 0L, VAM 0LD, VAM L, VAM LD Sensor connections 0 arc sensors (type VA DA or VA EH) portable arc sensor (type VA DP) Terminal: - MSTB. -.0 Cross-section area of wire Maximum. mm ( AWG) Minimum. mm ( AWG) Table.: VAM C, VAM CD Rated current L / L - current measuring zone - thermal withstand capability - power consumption or A (optional) 0/0Hz 0 A (0 *I N [I N =A]); 0 0 A (0 * I N [I N =A]) 00 A (for s) 00 A (for 0s) 0 A (continuous) <0. VA Rated current L / I 0 - current measuring zone - thermal withstand capability - power consumption or A (optional) 0/0Hz 0 A (0 *I N [I N =A]); 0 0 A (0 * I N [I N =A]) 00 A (for s) 00 A (for 0s) 0 A (continuous) <0. VA Terminal: - single or multi-strand wire Cross-section area of wire Maximum mm ( AWG) Minimum. mm ( AWG)

39 I/O Technical data. Auxiliary power supply. Auxiliary power supply Table.: VAM 0L, VAM 0LD, VAM L, VAM LD, VAM C, VAM CD, VAM L, VAM LX Rated voltage U AUX Power consumption V dc < W (in normal mode) <. W (output relays activated) Terminal: - MSTB. -.0 ( RJ when supply from central unit) - Cross-section area of wire Maximum. mm ( AWG) Minimum. mm ( AWG) Table.: VAMP R Rated voltage U AUX Current consumption - one relay group activated - both relay groups activated V dc 0 ma stby 0 ma 0 ma Table.: VA DA, VA EH, VA DP Rated voltage U AUX Power consumption V dc (from I/O unit) < mw (in normal mode) < 0 mw (activated). Digital inputs No digital inputs available in VAM L and VAM LD Table.: VAM 0L, VAM 0LD, VAM L, VAM LX Number of inputs pcs I> in arc fault trip out Internal operating voltage V dc (BIO in) V dc (BIO out) Load capacity (max.) Terminal: - MSTB. -.0 ma Cross-section area of wire Maximum. mm ( AWG) Minimum. mm ( AWG) 9

40 . Trip contacts I/O Technical data Table.9: VAM C Number of inputs pcs L> in pcs I> out Internal operating voltage V dc (BIO in) V dc (BIO out) Load capacity (max.) Terminal: - MSTB. -.0 ma Cross-section area of wire Maximum. mm ( AWG) Minimum. mm ( AWG) Table.0: VAMP R Operating voltage Current consumption V ac/dc ma. Trip contacts Table.: VAM 0L, VAM 0LD, VAM L, VAM LD, VAM C, VAM CD, VAM L, VAM LX Number of contacts closing contact (relay T) for VAM 0L, VAM 0LD, VAM C, VAM CD, VAM L, VAM LX Number of contacts closing contacts (relay T) for VAM L, VAM LD Rated voltage Continuous withstand capacity Make and carry for 0.s Make and carry for s 0 V ac/dc A 0 A A Breaking capacity, dc(l/r=0 ms) At V dc: At 0 V dc: At 0 V dc: Relay material Terminal: - MSTB. -.0 A 0. A 0. A AgNi 90/0 Cross-section area of wire Maximum. mm ( AWG) Minimum. mm ( AWG) 0

41 I/O Technical data. Disturbance tests Table.: VAMP R N/O / N/C rated voltage Operation time (typical) Continuous withstand capacity Make and carry for 0.s Make and carry for s 0V ac/dc < 0 ms A 0 A A N/O breaking capacity dc (L/R=0ms) At V dc At 0 V dc At 0 V dc Contact material Terminal: - MSTB. -.0 A 0. A 0. A AgNi 90/0 Cross-section area of wire Maximum. mm ( AWG) Minimum. mm ( AWG). Disturbance tests Table.: Disturbance tests Test Emission - Conducted - Emitted Immunity - Mhz damped oscillatory wave - Static discharge (ESD) - Emitted HF field - Fast transients (EFT) - Surge - Conducted HF field - Power-frequency magnetic field - Pulse magnetic field Standard & Test class / level EN / IEC 0- EN 0, Class A / IEC 0- EN 0, Class A / IEC 0- EN / IEC 0- IEC 0-- EN Level / IEC 0-- Class EN Level / IEC 0-- EN Level / IEC 0-- Class A EN Level / IEC 0-- EN Level / IEC 0-- EN EN Level Test value MHz MHz ±.kvp CM, ±.0kVp DM kv contact, kv air 0-00 MHz, 0 V/m kv, /0 ns, khz kv,./0 µs, CM kv,./0 µs, DM MHz, 0 Vemf 00A/m (continuous), 000A/m - s 000A/m,./0 µs

42 . Electrical safety tests I/O Technical data. Electrical safety tests Table.: Electrical safety tests Test - Impulse voltage withstand - Dielectric test - Insulation resistance - Protective bonding resistance Standard & Test class / level EN 0-, Class III EN 0-, Class III EN 0- EN 0- Test value kv,./0 ms, 0. J kv, 0 Hz. Environmental conditions Table.: Environmental conditions Operating temperature range - Transport and storage temperature range - VAM I/O units - ARC SLm, VA xx sensors - Relative air humidity -0 C ( F) -0 0 C (-0 F) -0 C (-0 F) < % ( year, average) < 90% (0 days per year, condensation not allowed) Maximum operating altitude 000 m (. ft). Package Table.: Package Dimensions (WxHxD) VAMP R, VAM 0L, VAM C, VAM L, VAM LX Weight (unit, box and user instructions) VAMP R, VAM 0L, VAM C, VAM L, VAM LX - x 9 x mm /. x. x 0.9 in - 0. kg (.9 lb)

43 I/O Technical data.9 Casing.9 Casing Table.: VAM 0L, VAM C, VAMP R, VAM L, VAM LX Housing class (IEC 09) Housing class (NEMA) Housing class (UL 0) Dimensions (W x H x D) Material Weight Colour code IP NEMA Open type x 9 x mm /. x. x 0.9 in mm (0.09 in) steel plate 0. kg (. lb) RAL 0 (housing) / RAL 00 (back plate) Table.: VAM 0LD, VAM LD, VAM CD Housing class (IEC 09) Housing class (NEMA) IP Front: NEMA Rear: NEMA Housing class (UL 0) Front: Open type Rear: Open type Dimensions (W x H x D) Material Weight Colour code x 0 x mm /. x. x 0.9 in mm (0.09 in) steel plate 0.0 kg (. lb) RAL 0 (housing) / RAL 00 (back plate) Table.9: VA DA, VA EH, VA DP Housing class (IEC 09) Housing class (NEMA) Housing class (UL 0) Dimensions (W x H x D) IP NEMA Open type x x mm (VA DA) Φ x mm (VA EH) Φ0 x mm (VA DP) Material Weight Cable length Plastic 0.0 kg VA DA and VA EH: m or 0 m VA DP: m

44 9 Construction 9 Construction 9. Dimensional drawings 9.. VAM L / LX Din rail mounting VAM L/LX DIN RAIL MOUNTING mm in VAM L / LX 9.. L>ext/Int. VAM L / LX L>ext/Int 0.9 T max N m.-. lb-in V A M L / L X L>ext/Int mm /. in VAM L / LX L>ext/Int

45 9 Construction 9. Dimensional drawings 9.. VAM 0L Din rail mounting VAM 0L DIN RAIL MOUNTING mm in T max N m.-. lb-in mm /. in EN 00

46 9. Dimensional drawings 9 Construction 9.. VAM 0LD Flush mounting VAM 0LD FLUSH MOUNTING mm in T max N m.-. lb-in ø Ground screw terminal Min.. mm / Ø0.0 in (# - # AWG)

47 9 Construction 9. Dimensional drawings 9.. VAM L Din rail mounting VAM L DIN RAIL MOUNTING mm in T max N m.-. lb-in mm /. in EN 00

48 9. Dimensional drawings 9 Construction 9.. VAM LD Flush mounting VAM LD FLUSH MOUNTING mm in T max N m.-. lb-in ø Ground screw terminal Min.. mm / Ø0.0 in (# - # AWG)

49 9 Construction 9. Dimensional drawings 9.. VAM C Din rail mounting VAM C DIN RAIL MOUNTING mm in T max N m.-. lb-in mm /. in EN 00 9

50 9. Dimensional drawings 9 Construction 9.. VAM CD Flush mounting VAM CD FLUSH MOUNTING mm in T max N m.-. lb-in ø Ground screw terminal Min.. mm / Ø0.0 in (# - # AWG)

51 9 Construction 9. Dimensional drawings 9.. VAMP R Din rail mounting VAMP R DIN RAIL MOUNTING mm in. - Vac/dc Vac/dc 0.9 T max N m.-. lb-in mm /. in EN 00 - Vac/dc

52 Dimensional drawings 9 Construction 9..9 VA DA mm in VA EH mm in. 0. VAEH_mittakuva

53 9 Construction 9. Dimensional drawings 9.. VYX 00 mm in

54 9. Dimensional drawings 9 Construction 9.. VYX 00 mm in

55 9 Construction 9. I/O unit mounting and wiring 9. I/O unit mounting and wiring CAUTI Read this User's Manual carefully before undertaking any installation or wiring work. Safety instructions Always observe the national electrical safety regulations when working under live conditions. The unit manufacturer is not liable for damage due to incorrect working methods or failure to observe safety instructions. The correct handling of the unit under all mounting and operating conditions forms the foundation for its safe use. CAUTI Any separately marked notes and warnings must be observed. The wiring work must be performed according to national standards and any requirements specified by the customer. Do not connect the auxiliary supply voltage until the installation has been completed. Before installation Before installation, make sure the environmental conditions comply with the requirements specified in Chapter. CAUTI The unit contains components liable to damage if exposed to an electrostatic discharge (ESD). Do not open the unit unless you have taken appropriate protective measures against ESD. The manufacturer cannot guarantee operational safety in environments that do not satisfy the specified environmental conditions.

56 9. Connecting the VAMP I/O units 9 Construction 9.. VAM 0L, VAM L, VAM C, VAM L, VAM LX The units are designed for mounting on a DIN rail. Mount the units on the rail in such a way that the indicator lights on the front panel are visible and the sensor wiring can be made as easily as possible. 9.. VAM 0LD, VAM LD, VAM CD The units are designed for mounting on a door. Hence all indicators are clearly visible in normal operation. 9. Connecting the VAMP I/O units The I/O units can be connected to the components listed below: Enclosure current transformer secondary circuits (VAM C and VAM CD I/O units only) Circuit breaker trip circuits External auxiliary supply circuits Connections to the VAMP central unit or other I/O units (data communication and auxiliary supply) Connections to other central units or detection relays (digital input (DI) or digital output (DO) bus) 9. Connecting the secondary circuits of the current transformers (VAM C / VAM CD only) Connect the secondary circuits of the current transformers to the following screw connectors: X-, X- (L ) X-, X- (L /I 0 ) X-9, X- (L ) The arc protection system can also be single or two-phase connected. Three-phase connection is nevertheless recommended for optimal operating speed.

57 9 Construction 9. Connecting the secondary circuits of the current transformers (VAM C / VAM CD only) DANGER HAZARD OF ELECTRICAL SHOCK Do not open the secondary circuit of a live current transformer. Disconnecting the secondary circuit of a live current transformer may cause dangerous overvoltages. Failure to follow these instructions will result in death or serious injury. NOTE: The current measuring channels L and L must be used in connection with two-phase current measuring. Single-phase current or ground fault current must always be connected to the current measuring channel L /I 0 ; otherwise, an unbalance error will occur. The specified operating time can only be guaranteed for three-phase current measurement and with the proper voltage supply to all system components, minimum allowed auxiliary voltage is. Vdc. The VAM C overcurrent unbalance alarm settings recognizes if the two-phase or three-phase monitoring is being used based on the connections made to the unit and the overcurrent limits set for each connection. The two-phase connection monitoring is triggered when the L /I 0 connection overcurrent limit differs from the L /L overcurrent limit settings by 90% or more. This is because in the event two-phase monitoring is used, the L /I 0 connection is the connection used to monitor the ground current. Therefore, the current limit set for the L /I 0 connection should reflect limits associated with anticipated ground currents. The remaining L /L currents should be balanced, and overcurrent settings for the L /L connection should be reflected as such. The two-phase monitoring mode is also referred to as ground-fault mode. The three-phase monitoring is triggered when the L /I 0 and L /L overcurrent limit settings are similar, reflecting that each phase is understood to be in balance with the other two phases. If detected, the system gives an unbalance alarm after a 0-second delay time. The alarm does not affect other operations of the arc detection system. The phase discontinuity settings are non-adjustable since all the setting values have been programmed in the current-monitoring unit.

58 9. Connecting the trip circuits of the circuit breakers 9 Construction 9. Connecting the trip circuits of the circuit breakers Connect the circuit breaker s trip circuit to the following pins: TRIP: X-, X- For example, in the event of an arc fault, the output contact will close at specified time when three-phase current measurement is used. The output trip relay of the light I/O units (VAM 0L and VAM L) operates during faults in its own zone. In the current I/O unit (VAM C), select the protection zone controlling the I/O unit using the programming switches. If several trips are required, the multiplying relay VAMP R can be used. If VAMP R is used, make sure that proper voltage supply is connected to device. 9. Connecting between the central unit and the I/O unit Connect the central unit to the I/O units with a modular cable of type VX00. The modular cable carries all information between the central unit and I/O units, including data in serial form, arc fault messages and operating supply to the I/O units. Connect the VX00 cable to the arc I/O interface of the central units. Connect the cable to or on the first I/O unit. Route the cable from or on the first I/O unit to or in the next unit, etc. All the and interfaces are identical, i.e. the cable can always be connected to either interface. The maximum total length of the modular cable, taking into account all the I/O units connected to the central unit, is 00 m. NOTE: Use only star connection for I/O units. Maximum single bus cable length is 0 meters. CAUTI HAZARD OF EQUIPMENT DAMAGE Do not connect modular cables closed loop. Failure to follow these instructions can result in personal injury or equipment damage.

59 9 Construction 9. Connecting separate auxiliary supplies NOTICE HAZARD OF EQUIPMENT DAMAGE Only VAMP communication cable type VX00 shall be used. Modular cable wiring shall be placed on the control cabling trays as far from the primary cable, bus bar and bus ducts as possible. Do not connect Ethernet to ARC I/O Bus! Failure to follow these instructions can result in equipment damage. 9. Connecting separate auxiliary supplies When routing modular cables over long distances (0 meters of modular cabling) or when the system contains more than I/O units you should preferably use a separate auxiliary +Vdc voltage supply with output monitoring along with the modular bus cabling. Recommended types of power supplies with output monitoring:. Phaseo ABLRSM0 Vdc). Phaseo ABLRSM00 Vdc). or any equivalent type of power supply with above functionality NOTE: Use of power supplies without voltage monitoring is not recommended. Connect the auxiliary supply to the V terminals of the last I/O unit. Use at least.mm (AWG ) size twisted pair cable. NOTE: It is recommended to use external wiring to connect auxiliary supply to all units. Pay particular attention to the polarity of the wire and cable connections. Additional power supply cabling is recommended, min.. mm (AWG ) Power supply cabling, min.. mm (AWG ) Modular Arc I/O bus cable 9

60 9. Connecting separate auxiliary supplies 9 Construction Vdc ~ VAM X VAM R 0 9 0L X int L>ext/ Latch L+I/L Zone X TRIP int L>ext/ Latch L+I/L Zone 0 9 S R INPUT SENSO R ERROR OK ACT TRIP 9 S R INPUT SENSO X X X POWE ACT R SENSO O N ACT SW OK O N ERROR R SENSO SW TRIP 0L VAM R POWE ERROR OK O N int L>ext/ Latch L+I/L Zone Vamp L POWE R SENSO SW OK F F O I Figure 9.: External power supply wiring Vdc ~ VAM X VAM 0 9 0L X VAM 0 9 0L X VAM POWER 0 9 0L POWER X POWER L>ext/in Latch L+I/L Zone 0 9 R INPUTS SENSO TRIP 9 L>ext/in Latch L+I/L Zone 0 9 R INPUTS SENSO 9 0 t ERROR OK SENSOR SW ACT TRIP t L>ext/in Latch L+I/L Zone 0 9 R INPUTS SENSO OK ACT TRIP 0 R INPUTS SENSO 9 0 X X X SENSOR O N TRIP SW OK ACT O N ACT SENSOR O N t L>ext/in Latch L+I/L Zone O N Vamp 00 SW t ERROR ERROR ERROR OK 0L POWER SENSOR SW 9 0 X OK F F I O Vdc ~ VAM X 0 9 VAM X VAM 9 0 SENSOR SW OK ACT TRIP 9 R INPUTS SENSO 9 0 X t L>ext/in Latch L+I/L Zone 0 9 SENSOR 9 9 POWER R INPUTS SENSO 9 0 X ERROR t L>ext/in Latch L+I/L Zone 0 0 OK ACT TRIP 0 9 R INPUTS SENSO X X X SENSOR SW OK ACT TRIP 0L O N R INPUTS SENSO VAM O N t L>ext/in Latch L+I/L Zone 0 9 POWER ERROR SW 0 X ERROR L POWER ERROR ACT TRIP 0 9 0L OK O N SENSOR O N t L>ext/in Latch L+I/L Zone 0L POWER SW Two branch design, length of cabling must not exceed 00 m combine total in both branches. Figure 9.: Protection system wiring configuration 0 9 VAM X 0 9 VAM 0L X 0 9 0L R X 0 9 0L VAM R POWE POWE R X POWE 0 ACT TRIP X int L>ext/ Latch L+I/L Zone S R INPUT SENSO 9 0 X int L>ext/ Latch L+I/L Zone SW OK 9 OK SW ACT TRIP 0 S R INPUT SENSO X 9 0 R ERRO R SENSO int L>ext/ Latch L+I/L Zone R ERRO R SENSO OK O N TRIP SENSO O N OK ACT SW O N O N int L>ext/ Latch L+I/L Zone Vamp 00 ERRO R ERRO R SENSO R R R SW 0L VAM POWE ACT TRIP 0 9 S R INPUT SENSO X OK F F I O If four or less I/O units are used, total cable length is below 0 m. No power supply is needed. Figure 9.: Small protection system wiring configuration, one branch design 0

61 OK L>ext/int Latch L+I/L Zone SW O N X SENSOR OK ACT TRIP SENSOR INPUTS X POWER ERROR L>ext/int Latch L+I/L Zone SW O N X SENSOR OK ACT TRIP SENSOR INPUTS X POWER ERROR L>ext/int Latch L+I/L Zone SW O N X SENSOR OK ACT TRIP SENSOR INPUTS X POWER ERROR L>ext/int Latch L+I/L Zone SW O N X SENSOR OK ACT TRIP SENSOR INPUTS X POWER ERROR 9 Construction 9. VAMP R + Vdc ~ VAM 0L 0 9 VAM 0L 0 9 VAM 0L 0 9 VAM 0L 0 9 Vamp X X X X I O F F Systems having more than four I/O units must be equipped with separate auxiliary supply. Figure 9.: Protection system wiring configuration, one branch design 9. VAMP R - V ad/dc + Vdc :X VAMP R Group Group Self super vision alar m X: Figure 9.: VAMP R block diagram The multiplying relay VAMP R can be used when additional trip outputs are needed. VAMP R comprises N/O contacts and N/C contacts. They are divided into two separate groups which can be independently controlled by e.g. the binary output of the I/O units or the central unit. Attach the VAMP R unit to a DIN rail. Connect the auxiliary voltage ( +V ) to terminal X- (+) and X- (-). Terminals X- and X- are parallel inputs to X-(+). Terminals X- and X- are parallel inputs to X-(). The auxiliary voltage ( +V ) can be supplied from the central unit or nearest slave ( X- (+), X- (-)). Connect the required signal (- V ad/dc) to the trip control inputs. Input TRIP ( X-, X- ) is controlling the trip group. Input TRIP ( X-, X-9 ) is controlling the trip group. There are xn/c + xn/o contacts per trip group.

62 9.9 Wiring multiple central units 9 Construction If necessary, input TRIP and can be connected in parallel. Then all trip relays will operate simultaneously. 9.9 Wiring multiple central units A maximum of I/O units and/or central units in slave mode can be connected to one communication bus. In this case, the units can operate on a maximum of four protection zones (depending on their programming switches). The light and current signals given by the I/O units, including address information, are transferred to each central unit. If more than one central unit is to be connected to the same communication bus, one central unit must be in central unit mode and the other central units in sub-unit mode. In applications with multiple central units the central units can be interconnected also via BI/O connections (binary input/output). In this case, each part of the system can control four protection zones per system communication bus. In this case, arc and overcurrent information is transferred between the central units without address information. NOTE: When configurating Vamp arc protection system with multiple central units, disconnect I/O-units from central units in slave mode during their installation procedure. 9.0 Arc sensors Mount the sensors on the switchgear in such a way that they cover the protection zone as completely as possible. The line of sight must be free between the sensor and the supervised area. If point sensors are used in open compartments (such as bus-bar sections), there should be a sensor approximately every meters. Due to the wide detection range of the sensors and the light reflection inside the switchgear, the mounting position is not critical. Connecting sensors VA DA and VA EH to the I/O units The sensors are delivered with -metre standard cables or 0-metre shielded cables (to be specified in the order). After mounting the sensors, connect them to the I/O units as follows: Draw the wire to the nearest I/O unit using the shortest route possible and cut it to a suitable length. Connect the arc sensors to the screw terminals X- 0. The polarity of the arc sensor cables is not critical.

63 9 Construction 9.0 Arc sensors Connecting the ARC-SLx sensors to the I/O units The sensors are delivered in standard lengths (to be specified in the order) equipped with terminals compatible with VAM L units. After mounting the sensors, connect them to the I/O units as follows: Draw each end of the sensor to the I/O unit and carefully form a loop of the extra fibre. Connect the arc sensors to plug-in terminals X-R, T R, T. While the polarity of the arc sensors is not critical, you must connect each end of the fibre to the same channels. NOTE: Check that the sensor positioning has not changed during shipping and commissioning. Use a separate VAMP Arc Flash Protection Testing Manual for testing testing each sensor during commissioning VA DA You can be install the arc sensor onto the switchgear wall from the outside. Press the active part of the sensor through the 0-mm hole in the wall and fix it using a -mm screw. VADA_asennus Figure 9.: Mounting the arc sensor VA DA Active part of the sensor Cable clamp Fastening screw x mm Cable of sensor You can also surface mount the sensor to the wall using the mounting plates VYX0 or VYX0, available as additional parts.

64 9.0 Arc sensors 9 Construction NOTE: The sensor must not be exposed to direct sunlight or other strong light. Do not mount the sensor directly under a light source. Figure 9.: Arc sensor VA DA Figure 9.: Sensitivity of the arc sensor VA DA 9.0. VA EH You can be install the arc sensor onto the switchgear wall from the outside. Press the active part of the sensor through the 0.-mm hole in the wall. You can also surface mount the sensor. To do this, push the sensor into a plastic mounting tube and fix it with heat shrink tubing. NOTE: The sensor must not be exposed to direct sunlight or other strong light. Do not mount the sensor directly under a light source. Figure 9.9: Arc sensor VA EH

65 9 Construction 9.0 Arc sensors 9.0. ARC-SLx ARC-SLx is an fibre sensor that can be mounted on the switchgear to monitor several compartments simultaneously (various bus-bar compartmets, etc.). The fibre must not touch any live parts of the switchgear or other hot components, since too high temperatures may destroy the fibre. When mounting the sensor on the switchgear, ensure that the bending radius is long enough (min. 0 mm) and that it is safe from the sharp edges of the switchgear. NOTE: The sensor must not be exposed to direct sunlight or other strong light. Do not mount the sensor directly under a light source. To avoid false tripping, cover any unused channels of the I/O unit. Figure 9.0: ARC-SLx 9.0. VA DP The portable pin sensor can be temporarily connected to the I/O units. It is used to improve safety when working with live switchgear, for example, Attach the sensor close to the working area, for example in the breast pocket of the maintenance man. A pin sensor operates in the same way as a fixed arc sensor. The only difference is free mobility within the limits of the connecting cable. Figure 9.: Pin sensor VA DP

66 9.0 Arc sensors 9 Construction NOTE: To avoid faulty tripping, disconnect the pin sensor from the system immediately after use. DANGER HAZARD OF ELECTRIC SHOCK, ELECTRIC ARC OR BURNS Ensure that trip signal will control main breaker in case of Arc flash incident! Failure to follow these instructions will result in death or serious injury.