LS Industrial Systems Metasol Series - OCR Tester; OCR Tester Characteristic; Explanation on Function Key; OCR Tester Check List

67
E
5. OCR Tester
Under no power condition, simple tests can be performed regarding trip relay’s long time delay/short time delay /
instantaneous / ground fault.
1. Maximum of 17In can be entered.
2. Enter current value size and phase on each of R/ S/ T/ N.
3. Frequency can be adjusted.
4. Test to see how precisely and accurately trip relay can operate to simulations.
OCR Tester Characteristic
1. OCR Tester enter its signals between integrator and amplifier.
2. Therefore, devices after amplifier like CPU MTD (Magnetic Trip Device) and ACB operation can be checked.
3. But, it can not check for integrator or Rogowski sensor.
Rogowski
Sensor
R, S, T, N phase signal input
(Size/Phase)
Increase / Decrease Signal Input (Size / Phase)
Signal Input / Cancel
Waveform occur and stop
Select frequency
OCR Tester Check List
Explanation on Function Key
200% R phase Over-current Test
Inter
grator
Signal
Amplifier
Input
Input
Occur
Occur
BREAK
CPU
ACB
PHASE R SET
AMP=2.0
PHA=0.0
RANGE-(0~360.0)
Fault Current Test(ACB’s 8In)
PHASE S SET
AMP=8.0
PHA=0.0
RANGE-(0~360.0)
R : 2.0  0.0
S : 1 .0  240.0
T : 1 .0  120.0
N : 0.0 0.0
R : 1.0  0.0
S:8.0 240.0
T:1.0 120.0
N : 0.0  0.0
Digital Trip Relay Accessory
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