Page 260 - Wagp_InterfaceElectronic_Volume4_2015_US.pdf

789-654
4 Current Signal Conditioner for RT 2000 Rogowski Coils

258

U3 I
L3
GND I
L2
OUT (I)
U2 I
L1
IN (U)
GND I
N
U1 24 V
POWER
GND 0 V

Short description: The 750-494 3-Phase Power Measurement Module within the WAGO-I/O-
The Rogowski Current Signal Conditioner acquires 5–2000A alternating cur- SYSTEM measures electrical data (e.g., voltages, currents, effective power
rents in a three-phase system. and energy consumption) in a three-phase supply network. Thus, the user is
The magnetic field produced around each conductor is sensed via three non- always able to determine the load condition (imbalance, capacitive compo-
contact Rogowski coils and provided as a proportional voltage signal to the nents), to optimize consumption and protect machines or systems from dama-
signal conditioner. The current signal conditioner adjusts the phase of each of ge and breakdowns. Easy installation of Rogowski coils also allows existing
the three voltage signals, converting them into 100mA alternating current sig- systems to be retrofitted without process interruption.
nals. These are then transmitted to the 750-494 3-Phase Power Measurement
Module.

Description Item No. Pack. Technical Data
Unit
Signal Conditioner for RT 2000 Rogowski 789-654 1 General specifications:
Coils Supply voltage range 16.8 ... 32 V
Max. power consumption 4000 mW
Operational indication LED, green
Degree of protection IP20
Phase error < 1°
Max. operating frequency 300 Hz (phase accuracy at 50 Hz only)
Linearity ≤ 0.1 %
Accessories Item No. Pack. Temperature coefficient ≤ 0.1 %/K
Unit Transmission error < 1.1 %
Rogowski Coil RT 2000, Response threshold 2 A
1.5 m output cable 855-9100/2000-000 3 Environmental requirements:
Rogowski Coil RT 2000, Ambient operating temperature -25 °C ... +70 °C
3 m output cable 855-9300/2000-000 3 Storage temperature -40 °C ... +85 °C
3-Phase Power Measurement Module Safety and protection:
(480V/1A) 750-494 1 Test voltage
(input/output/supply) 2.5 kV AC, 50 Hz, 1 min.
Technical Data Connection and type of mounting:
Wire connection CAGE CLAMP ®
Input: Cross sections 0.08 mm² ... 2.5 mm² / AWG 28 ... 12
Input signal 3 x RT 2000 (2000 A) Strip lengths 5 ... 6 mm / 0.22 in
Sensitivity 42.2 mV Dimensions and weight:
50 Hz sinus Dimensions (mm) W x H x L 70 x 55 x 90
Outputs Weight 128.3 g
Output signal 3 x 100 mA AC Standards and approvals:
Rated output current 100 mA AC (for direct connection to Conformity marking 1
750-494 Phase Power Measurement r UL 508 (pending)
Module)
Overcurrent 3000 A (max. 150 mA per output)