NUMERICAL OC/EF PROTECTION RELAY ADR141C/241C
ASHIDA Electronics Pvt. Ltd.
Ref: Manual / ADR141C / 241C
Issue: 04D
Date : 10.07.2014
Page 84/86
HF Time Delay Testing For PHASE & 3IO (Adjust Current 2N to Trip Relay with HF):
(Actual Delay = Inst. + Set Delay)
HF Time Delay settings 00(Inst.) 0.06 2.0
Observed Delay(Phase)
Observed Delay(3IO)
Tolerance = Inst. + ( ± 5% of Set ) ≤40 ms
Definite Time Delay Testing For PHASE & 3IO (Curve 6) (Adjust Current 1.5N of pickup
setting):
Definite Time delay settings 0.5 10.0
Observed Delay(Phase)
Observed Delay(3IO)
Tolerance ± 5%
0.475 to 0.525 9.5 to 10.5
3. Breaker Fail (LBB) Time Test:
Set BF Delay (mSecs) 100 400 800
Observed delay (mSecs)
4. Key functions: ____________________ .
5. Relay contacts: _______________.
6. Back Terminal Connection: _______________________________.
7. Insulation test: __________________MΩ @ 1000VDC.
8. H.V. Test: @ 2000VAC between all Terminals and body for 60 Sec. _____________.
9. RS 485 Communication:______________________
10. Conclusion: _________________________________________________________.
Tested By Checked By (QC)
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