Cooper Power Systems Kyle Type ME Series, Maintenance Instructions Manual, Page: 23 / 50

S280-75-2
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To check voltage changes during typical recloser-trip
operations, measure voltage at test points listed in Table 6.
Failure to get voltage readings indicated usually indicates
problems in the recloser. Consult the recloser maintenance
manual for testing and service information (see Appendix 11).
Figure 36.
Block diagram of trip-operating (Table 6). See Figure 8 for com-
plete block diagram. Letters in circles (A,B, etc.) are test points
and correspond to control cable receptacle pin connection
points.
Figure 37.
Form 3 test points of recloser-trip operations (Table 6). For rela-
tionship of terminal test points, see Figures 2, 18 and 19.
82040KMA
TABLE 6
Test Points for Trip Operating Circuit
(Figures 36, 37, and 38)
* Trip signals have a time duration of only 0.04- to 0.5-seconds, depending on recloser type. If voltage on tie board B drops to 2.2-volts for longer than 5-seconds, the recloser failed to trip. Unplug the control
battery.
Test Points
Voltage Vdc
Voltage Vdc Control Recloser Closed Voltage Vdc Voltage Vdc Recloser open,
+Lead -Lead Control in Lockout No Fault Trip Signal* But Not Locked out
Form 3 and 3A Form 3 and 3A
Tie Board A Middle Battery Test Terminal 24 24 24 24
Seq. Relay 7A Middle Battery Test Terminal 24 0 0 0
Tie Board B Middle Battery Test Terminal 24 24 2.2 24