Cooper Power Systems Kyle Type ME Series, Maintenance Instructions Manual, Page: 18 / 50

Type ME Electronic Recloser Control
18
Figure 24.
Measuring voltage across matching transformers (Table 2) (control panel open, middle left hand side of control).
Figure 25.
Block diagram of secondary side of matching transformers and
input bridge (Table 3). See Figure 8 for complete block diagram.
Figure 26.
Form 3 tie board test points for internal dc-load-current signal (Table
3. For relationship of terminal location on the tie board, see figures 18
and 19.
88950KMA
82040KMA
INTERNAL dc-LOAD-CURRENT SIGNAL
To check the dc-load-current output signal, measure the volt-
age at tie board test points listed in Table 3 at 100% minimum-
trip current.
Failure to get these signals can be due to trouble in the
matching transformers, or open/or shorted diodes in phase-trip
No. 1 or ground-trip No. 1 circuit boards.
TABLE 3
Tie Board Test Points for dc-Load-Current Signal
(100% Minimum-Trip) (Figures 25, 26 and 27)
Terminal Position Voltage
Load Current Form 3 Form 3A Readings
+Lead -Lead +Lead -Lead Vdc*
Seq. Seq.
Phase Relay M-ph Relay Phase Minus 6.1
7A 7A
Seq. Seq.
Ground Relay M-gnd Relay Gnd Minus 0.78
7A 7A
*These are full-wave rectified signals.