WPM 770 Data Sheet 679.D.141.02 Digital Multifunctional Power Meter with LCD Display and
Application The digital Weigel Power Meters WPM 770 have been designed to display the electrical parameters in low voltage and middle voltage systems. The meters are suitable for use in 3 - phase 3 - wire or 3 - phase 4-wire systems 230/400 V and for use with current transformers N/5 A. Features Real-time true - RMS measurement: Voltages phase to neutral and phase to phase of the 3 phases as well as mean value, minimum/maximum values, unbalance and deviation from nominal value; currents of 3 phases and mean value, neutral current, minimum/maximum values; phase sequence; frequence and frequence deviation; active power, reactive power, apparent power, and power factor of the 3 phases and in total Programmable demand calculation for currents and powers (fixed block or rolling block, demand time can be set to 5; 10; 15; 30 min) Active energy and reactive energy in 4 quadrants (imported/exported, inductive/capacitive), 4 tariffs for energies in up to 8 periods in 24 hours in 2 time zones, working days and holiday days can be set Harmonic analysis of voltages, currents, powers, and energies up to the 31 st harmonics as well as total harmonic distortion (THD) Built-in clock and event logging Alarms for upper and lower setpoints 2 relay outputs and 3 status inputs RS485 interface (Modbus - RTU) Up to 3 optional modules for additional interfaces, additional relay outputs and status inputs, pulse outputs, analogue inputs, analogue outputs, as well as memory extension Using the four buttons on the front panel, the measured values can be selected and settings can be programmed. Functional Principle WPM 770 is a microprocessor-controlled digital measuring device for measuring, calculating, and indicating electrical ratings. The meter has 3 voltage inputs and 3 current inputs to enable simultaneous evaluation of voltage, current and power for all three phases. General Technical Data Case case details material of case panel fixing enclosure code insulation voltage pulse withstand voltage insulation resistance Terminals wire-cross section suitable to be mounted in switch gear panels plastics, black plastic clips IP 52 front of case IP 30 rear of case 2 kv AC inputs outputs auxiliary supply 4 kv (peak), 1.2/50 S 50 M plugable screw-terminal barrier strips 2.5 mm 2 max. Dimensions basic unit with optional module bezel 96 mm bezel height 13.5 mm panel cutout 90 +0.5 mm mounting depth 45.1 mm 66.6 mm panel thickness 5 mm weight approx. 0.4 kg Electrical Data system type 3-phase 3 - wire or 3 - phase 4 - wire system, unbalanced loads rated voltage 240/415 V directly connected rated current N/5 A via CT CT primary value adjustable from 1 to 9999 A overload capacity current 1.2 times continously 10 times for 1 sec. voltage 1.2 times continously 2 times for 1 sec. rated frequency 50 Hz frequency range 45... 65 Hz operating voltage 300 V measurement category CAT III Display/Measuring/Accuracy Display LCD display, 70 mm x 55 mm with backlight (when pressing a button) Measured quantities (repetition time 1 s) voltages U L-L, L-N and mean value, unbalance, max./min. values, deviation recording currents I L1, L2, L3, N and mean value, max./min. values frequency F frequency, deviation active power P L1, L2, L3, and P reactive power Q L1, L2, L3, and Q apparent power S L1, L2, L3, and S power factor PF L1, L2, L3, and in total active energy L1, L2, L3, and in total, imported and exported reactive energy L1, L2, L3, and in total, inductive and capacitive maximum demand for I L1, I L2, I L3 and P, Q, S demand time adjustable to 5; 10; 15; 30 min individual harmonics for U, I, P and energy up to the 31 st harmonics total harmonic distortion (THD) for U and I Measuring unit Display rangeresolutionaccuracy voltages directly 0... 500 V L-L 0.01 V 0.2% voltages via VT 0... 65 kv primary currents directy 0...1 A/5 A 0.001 A 0.2% currents via CT 0... 9999 A powers each phase 0... 649.9 M 0.1 0.5% total powers 0... 1949.9 M ( = W/var/VA) power factor 1... +1... 1 0.001 0.5% frequency 45... 65 Hz 0.01 Hz 0.1% active energy * ) 0... 99,999,999.9 kwh 0.1 kwh 1.0% reactive energy * ) 0... 99,999,999.9 kvarh 0.1 kvarh 2.0% unbalance rate 0... 100.0% 0.001 1.0% individual harmonics 0... 100.0% 0.001 1.0% THD 0... 100.0% 0.001 1.0% * ) The accuracy for energy measurement is class 1 according to IEC 62053 21.
4 Quadrants Measurement Reactive energy capacitive inductive generator/ motor/ export import ϕ 180 Active energy cos ϕ inductive capacitive generator/ motor/ export import Auxiliary Supply auxiliary voltage Environmental operating temperature range storage temperature range relative humidity Status Inputs 85... 265 V AC (45... 65 Hz) / 85... 265 V DC power consumption <10 VA 10... +55 C 40... +70 C 5%... 95% non-condensing WPM 770 is equipped with three status inputs which can be used, e.g. for recording switch positions. The status inputs must be connected by switch contacts and an external supply of 80... 265 V AC. Relay Outputs WPM 770 is equipped with two relay outputs for setpoints. switching capacity 250 V AC, 5 A / 30 V DC, 5 A setpoints upper and lower setpoint adjustable 0... 120% delay on-delay and off - delay adjustable 0... 99 s measuring unit selectable from 28 measuring units RS485 Interface WPM 770 is equipped with one RS485 interface. protocol MODBUS RTU baud rate 2400, 4800, 9600, 19200 address 1... 247 Beispiel Standards Data Sheet 679.D.141.02 Digital Multifunctional Power Meter with LCD Display and EN 55022 Information technology equipment Radio disturbance characteristics Limits and methods of measurement EN 55024 Information technology equipment Immunity characteristics Limits and methods of measurement EN 60950 1 Information technology equipment Safety Part 1: General requirements EN 61000 3 Electromagnetic compatibility (EMC) Limits 2 Part 3 2: Limits for harmonic current emissions (equipment input current <= 16 A per phase) 3 Part 3 3: Limitation of voltage changes, voltage fluctuations and flicker in public low voltage supply systems, for equipment with rated current <= 16 A per phase and not subject to conditional connection IEC 61000 4 Electromagnetic compatibility (EMC) Testing and measurement techniques 2 Part 4 2: Electrostatic discharge immunity test. 3 Part 4 3: Radiated, radio frequency, electromagnetic field immunity test 4 Part 4 4: Electrical fast transient/burst immunity test 5 Part 4 5: Surge immunity test 6 Part 4 6: Immunity to conducted disturbances, induced by radio frequency fields 8 Part 4 8: Power frequency magnetic field immunity test 11 Part 4 11: Voltage dips, short interruptions and voltage variations immunity tests WPM770 EP 2 pulse outputs for active energy and for reactive energy type optocoupler open collector, max. 50 V, 50 ma pulse weight depending on VT ratio and CT ratio: pulse count each kwh or kvarh = = (1/pulse constant x PT x CT) pulse constant 1000... 9999 programmable pulse width 60... 100 ms programmable WPM770 BA BACnet interface netzwork configuration via buttons and meter display netzwork mode BACnet MS/TP or P1 FLN selectable measured values 142 register available via network WPM770 S 4 additional status inputs (maximum 2 modules per device) WPM770 R 2 additional relay outputs WPM770 M memory extension 8 MB WPM770 AO 2 analogue outputs type 4... 20 ma measuring unit selectable from 13 measuring units scaling adjustable 1.0... 10.0
WPM770 AI type WPM770 P Terminals 1 9 10 23 2 analogue inputs 4... 20 ma Profibus interface optional module Basic unit No. Terminal Description No. Terminal Description 1 NC not connected 10 RL21 relay output 2 + 2 N/ aux. supply N/ 11 RL22 relay output 2 3 L/+ aux. supply L/+ 12 RL11 relay output 1 + 4 V1 voltage L1 13 RL12 relay output 1 5 V2 voltage L2 14 SG status input ground 6 V3 voltage L3 15 S3 status input 3 + 7 VN voltage neutral 16 S3 status input 2 + 8 RS485 RS485B 17 S3 status input 1 + 9 RS485+ RS485A+ 18 I1+ current L1 19 I1 current L1 20 I2+ current L2 21 I2 current L2 22 I3+ current L3 23 I3 current L3 Terminals WPM770 EP: 2 pulse outputs 1 EX P1+ pulse output for active energy + 2 EX P1 pulse output for active energy 4 EX P2+ pulse output for reactive energy + 5 EX P2 pulse output for reactive energy WPM770 BA: BACnet interface 1 NC not connected 2 NC not connected 3 S shield 4 BACnet BACnet 5 BACnet+ BACnet + WPM770 S: 4 additional status inputs 1 EX S4(S8) status input 4 (or 8) + 2 EX S5(S9) status input 5 (or 9) + 3 EX S6(S10) status input 6 (or 10) + 4 EX S7(S11) status input 7 (or 11) + 5 EX SG status input ground WPM770 R: 2 additional relay outputs 1 RL22 relay output 2 2 RL21 relay output 2 + 5 RL12 relay output 1 6 RL11 relay output 1 + WPM770 AO: 2 analogue outputs 1 EX AO2 analogue output 2 + 2 EX AG analogue output 2 4 EX AO1 analogue output 1 + 5 EX AG analogue output 1 WPM770 AI: 2 Analogeingänge 1 EX AI1 analogue input 1 + 2 EX AG analogue input 1 4 EX AI2 analogue input 2 + 5 EX AG analogue input 2 WPM770 P: Profibus interface 1 NC not connected 2 NC not connected 4 Profibus Profibus 5 Profibus+ Profibus +
Connections Dimensions Data Sheet 679.D.141.02 Digital Multifunctional Power Meter with LCD Display and 3 phase 4 wire system, 3 CTs, voltage directly connected optional modules 3 phase 3 wire system, 3 CTs 3 phase 3 wire system, 2 CTs
Ordering Information WPM 770 Multifunctional Power Meter with LCD Display, V6 F1 P1 basic unit 96 mm x 96 mm rated voltage 240/415 V directly connected rated current N/5 A rated frequency 50 Hz auxiliary supply 85... 265 V AC (45... 65 Hz) / 85... 265 V DC Optional modules WPM 770 EP optional module pulse outputs WPM 770 BA optional module BACnet interface 1 ) WPM 770 S optional module additional status inputs WPM 770 R optional module additional relay outputs WPM 770 M optional module memory extension 8 MB WPM 770 AO optional module 2 analogue outputs 4... 20 ma 1 ) WPM 770 AI optional module 2 analogue inputs 4... 20 ma 1 ) WPM 770 P optional module Profibus interface 1 ) 1 ) on request Ordering example WPM 770 V6 F1 P1 Multifunctional Power Meter with LCD Display, 240/415 V directly connected N/5 A, 50 Hz, auxiliary supply 85... 265 V AC (45... 65 Hz) / 85... 265 V DC WPM 770 EP optional module 2 pulse outputs Weigel Meßgeräte GmbH Postfach 720 154 90241 Nürnberg Phone: 0911/42347-0 Erlenstraße 14 90441 Nürnberg Fax: 0911/42347-39 Sales: Phone: 0911/ 42347-94 Internet: http://www.weigel messgeraete.de e mail: vertrieb@weigel messgeraete.de