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GEK-106621
4 HARDWARE DESCRIPTION
4.5 RESET TARGETS
Targets can be reset by lifting the target reset level at the lower left edge of the cover on the DIAC. The relay
also provides a front panel trip circuit test. A actuating lever that must be pulled and then lifted is provided to
trip the device connected to the relay. The level directly operates the trip contacts.
4.6 MANUAL TRIP CIRCUIT TEST
The front panel contains two manual trip levers to test the trip circuit. The relay cover must be removed to
access the lever. The lever must be pulled and then lifted which prevents unintentional uplifted to prevent unin-
tentional operation.
4.7 TRIP CIRCUIT
The trip circuit is NOT polarity sensitive. The trip circuit will not be damaged if connected in reverse.
NOTE: Both trip circuits are suitable for use with Cap-Trip devices.
4
4.8 DIAC 66K COVER INSTALLATION
When replacing the cover on the DIAC relays the reset wire should be "locked" behind the nameplate by a
slight left to right motion to place the reset wire in the correct position.
4.9 RECEIVING, HANDLING, AND STORAGE
Immediately upon receipt, the relay should be unpacked and examined for any damage sustained during ship-
ment. If damage occurred during shipment a damage claim should be filed at once with the transportation com-
pany, and the nearest GE sales office should be notified. If the relay is not installed immediately, it should be
stored in its original carton in a location that is dry and protected from dust, metallic chips and severe atmo-
spheric conditions.
4.10 TARGET AND SEAL-IN UNIT
The target and seal-in unit has an operating coil tapped at 0.2 and 2.0 amperes. The relay is shipped from the
factory with the tap screw in the lower-ampere position. The tap screw is the screw holding the right-hand sta-
tionary contact. To change the tap setting, first remove one screw from the left-hand stationary contact and
place it in the desired tap. Next, remove the screw from the first undesired tap, and place it on the left-hand sta-
tionary contact where the first screw was removed. This is shown below in Figure 4–2: OPERATING COIL
TAPPED AT 2A (FACTORY DEFAULT). This procedure is necessary to prevent the right-hand stationary con-
tact from getting out of adjustment.
NOTE: Screws should never be left in both taps at the same time!
GE Power Management
DIAC Type 66K Digital Overcurrent Relay
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