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4.7.2 - AXL-II - Functional test
• O/C contacts
With breaker closed:
check continuity between terminals :(101 – 104); (111-114); (121-124); (131-134)
With breaker open
check continuity between terminals :(101 – 102); (111-112); (121-122); (131-132)
If additional O/C contact are present, they must be checked as well
In case of wrong working replace O/C contacs
At the end get again the breaker in open position with springs discharged
discharged
charged
discharged
discharged
discharged
charged
discharged
discharged
• RC-SC contacts
Get the breaker in open
with springs charged
discharged
charged
discharged
discharged
discharged
charged
discharged
discharged
Check the continuity between (241-244); (231-234)
Close the breaker and charge the springs
discharged
charged
discharged
discharged
discharged
charged
discharged
discharged
Check the continuity between (231-234)
At the end get again the breaker in open position
with springs discharged
discharged
charged
discharged
discharged
discharged
charged
discharged
discharged
If necessary replace RC-SC contacts
102
104
101
112
114
111
122
124
121
132
134
131
142
144
141
152
154
151
162
164
161
172
174
171
182
184
181
192
194
191
OC1
OC2
OC3
OC4
OC5
OC6
OC7
OC8
OC9
OC10
234
231
244
241
SC
RC
4 AUX CONTACTS
(default)
AUX CONTACTS
(additional)
102
104
101
112
114
111
122
124
121
132
134
131
142
144
141
152
154
151
162
164
161
172
174
171
182
184
181
192
194
191
OC1
OC2
OC3
OC4
OC5
OC6
OC7
OC8
OC9
OC10
234
231
244
241
SC
RC
SPRING
CHARGED
READY
TO CLOSE