SERVICE MANUAL R5888B
QUADRAMHO Chapter 5
Addendum 2
Page 3 of 13
4.2 High-set (test option 53, LED indication V~FAIL)
Minimum operate level =
100 K1 + K2
16
x
4.8
x I
n
A (±20%)
= ________ A
Measured value injecting into A phase (1Y 1 – 2) = _____________ mA
Measured value injecting into B phase (1Y 3 – 4) = _____________ mA
Measured value injecting into C phase (1Y 5 – 6) = _____________ mA
DIRECTIONAL CHECK AND ZONE REACH MEASUREMENTS
Directional checks with a close up fault.
A – N
B – N C – N
A – B B – C C – A
OPERATION TIMES
Source
impedance Phase Zone 1 (ms) Zone 2 (s) Zone 3 (s)
(Zs) ohms 50% of reach
A – B
B – C
C – A
A – G
B – G
C – G
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