GE Power Management
745 Transformer Management Relay
3-3
3 INSTALLATION
3.1 DRAWOUT CASE
3
4.
The locking mechanism releases when the stop position is reached. The relay now slides out of the case
when pulled from its handle. To free the relay, it may be necessary to adjust the handle position slightly.
Figure 3–4: SLIDING RELAY OUT OF CASE
b) RELAY INSERTION
Any 745 can be installed in any 745 case, but cannot be inserted into the case of another product in the SR
series. For instance, you cannot place an 745 relay into a 735 case.
If an attempt is made to install a relay into a non-matching case, the case configuration pin
will prevent full insertion. Applying a strong force in this instance will result in damage to the
relay and case.
Even though a relay may be inserted into a case, one should make sure the model number on the left side of
the relay matches the requirements of the installation.
1.
With the relay’s handle raised, align and slide both rolling guide pins into the case guide slots. Each rolling
guide pin is found near the hinges of the relay’s handle.
2.
Once fully inserted, grasp the handle from its center and rotate it down from the raised position towards the
bottom of the relay.
3.
As the handle is fully inserted, the latch will be heard to click, locking the handle in the final position. The
unit is mechanically held in the case by the handle’s rolling pins, which cannot be fully lowered to the
locked position until the electrical connections are completely mated.
c) DRAWOUT SEAL
To prevent unauthorized removal of the drawout relay, a wire lead seal can be installed through the slot in the
middle of the locking latch. The relay cannot be removed from the case with this seal in place. Even though a
passcode or setpoint access jumper can be used to prevent entry of setpoints and still allow monitoring of
actual values, access to the front panel controls may still need to be restricted. As such, a separate seal can be
installed on the outside of the door to prevent it from being opened.
Figure 3–5: DRAWOUT SEAL
CAUTION
Summary of Contents for 745 TRANSFORMER MANAGEMENT RELAY
Page 30: ...2 8 745 Transformer Management Relay GE Power Management 2 3 SECURITY 2 GETTING STARTED 2 ...
Page 210: ...7 36 745 Transformer Management Relay GE Power Management 7 2 BLOCK DIAGRAMS 7 SCHEME LOGIC 7 ...
Page 322: ...9 12 745 Transformer Management Relay GE Power Management 9 3 USING 745PC 9 745 PC SOFTWARE 9 ...
Page 396: ...A 4 745 Transformer Management Relay GE Power Management A 1 FIGURES AND TABLES APPENDIXA A ...
Page 400: ...C 2 745 Transformer Management Relay GE Power Management C 1 WARRANTY INFORMATION APPENDIXC C ...
Page 406: ...vi 745 Transformer Management Relay GE Power Management ...
Page 407: ...GE Power Management 745 Transformer Management Relay NOTES ...
