TERASAKI AME Series, Инструкция по эксплуатации

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KRB-5200h
-25-
5.2.3 Tests Using OCR Checker (type ANS1)
The ANS1 type OCR checker is used to check for instantaneous trip function.
 Two or more ACB’s cannot be tested using the OCR checker at the same time.
Caution

OCR field tests must be performed by competent persons.

Never touch the live terminal parts.
Otherwise, electric shock may result.
Fig. 15
OCR Checker Connection Diagram
Before performing the tests:

Apply the rated voltage between auxiliary circuit terminals U
1
and U
2
when the ACB is equipped
with the UVT.
How to test the OCR:
①
Stop the generator and open a disconnector or the like to isolate all sources of power/voltage
from both the primary and auxiliary circuits.
②
Connect the OCR checker power terminals (
l
and
k
) to the OCR test terminals
l
and ka for
R-phase test,
l
and kb for S-phase test, and
l
and kc for T-phase test.
③
Close the ACB.
④
Supply power (100 - 110 VAC, 50/60 Hz, 3 VA) to OCR checker terminals P
0
and P
1
and turn
on the power switch.
⑤
Wait three seconds after turning on the power switch, press the test button to check if the ACB
trips instantaneously.
⑥
After completion of the test, turn off the power switch and return the ACB to the original state.

If the tests show any problem, contact our branch office or your local agency.
OCR test terminal
ACB
(Optional)
(not supplied)
Power switch
ANS1 OCR
checker
Test button