Exide Technologies Section 94.40 - Manual (Page 16)

INSTALLING THE AT30
12
1.7. MAKING THE AC INPUT CONNECTIONS
Follow these steps to connect ac power to the AT30:
1. Use a branch circuit breaker or fused disconnect switch, properly sized for
the maximum ac input current of the AT30. This rating is listed on the left-
hand side of the charger's data nameplate. This device should have lockout
capability so that the ac input can be de-energized for charger maintenance.
A time delay circuit breaker or slow-blow fuse is recommended.
NOTE: If your charger is wired for 480 Vac input, and is equipped
with the standard AIC ac circuit breaker (no ac fuses), you need a
feeder breaker or fuse rated to interrupt the short-circuit current of
your ac supply.
2. Size the ac input wiring per the National Electric Code (NEC) and local
codes for the rating of the branch circuit breaker or fused disconnect switch.
3. Be sure the AT30 main transformer (T1) is properly connected for your ac
input voltage. See Section 1.6 for details.
4. All specific requirements of your facility take precedence over these
instructions.
5. Do not run the external ac power wiring through the same conduit of the
battery charger enclosure as the external dc power wiring.
PROCEDURE
1. Remove the safety cover (if supplied).
2. Run the ac wiring to terminals TB1-L1, TB1-L2, TB1-L3 and TB1-GND on
the I/O panel board in the enclosure.
3. For your convenience, all AT30 Series battery chargers are supplied with
CU-AL ac input compression lugs. Style-5018 and Style-5030 enclosure ac
input lugs accept #14-1/0 AWG wire. Style-163 enclosure ac input lugs
accept #6 AWG - 350 MCM wire. To make these connections, strip the
insulation 0.5in / 12.7mm on the incoming ac wires and connect the wires to
the appropriate lugs as shown on the next page.
4. Using a flat-head screwdriver, securely tighten the compression screws on
the lugs to 35-50 in-lb / 4.0-5.7 Nm.
5. Reinstall the safety cover (if supplied) after you have made and checked all
connections.
NOTES
1. The ac input terminal hardware fastens other components mounted to the I/O
panel. Be careful not to disconect any other component leads.
2. Always use a proper ground.
3. Use copper or aluminum conductors only.
4. Refer to images on the following page for I/O panel layout.