Installation Sequence - Alpha Technologies CFR 7.5K Operator's Manual

2 Installation
2.1 Pre–Installation Checklist (Continued)
The unit should be wired to dedicated circuit equipped with a properly sized circuit breaker.
The breaker's size is the unit's maximum input current (as given in the specifications) plus
25%.
For example if the unit draws 32.0 Amps of current at 208 VAC, adding 25% the input
current becomes 40.0 Amps. A 40 Amp circuit breaker would be OK. Always follow the
local electrical code when installing or sizing circuit breakers.
Wiring should only be done by qualified personnel and comply with the local electrical code.
2.1.3 Standby Generator (If Used)
The unit has frequency sense circuits for operation with most standby generators. Use a
generator equipped with electronic speed and voltage controls.
Before installation see that the generator's output voltage meets the unit's input voltage
requirements as shown on both nameplates. A 240 VAC unit must be attached to a 240
VAC generator.

2.1.4 Installation Sequence

Alpha recommends you install and wire the unit in this sequence:
1 Unpack and transport the unit to the installation site (Section 2.2, "Unpacking and Trans-
portation").
2 Connect the internal batteries (for the 7.5K and 10K see Section 2.3, "Connecting the
Internal Batteries", for the 15K see Section 2.7, "Connecting the External Battery Packs").
3 Remove or bolt down the seismic brackets (Section 2.4, "Mounting the Seismic Brack-
ets"). If the brackets are not used, lock the wheels (Section 2.5, "Locking the Wheels").
4 Connect the input and output terminal blocks (Section 2.6, "Connecting the Terminal
Blocks").
5 If used, connect the external battery packs (Section 2.7, "Connecting the External Battery
Packs").
6 If used, connect the external alarm port (Section 2.8, "Connecting the External Alarm
Port").
7 If used, connect the RS-232 link (Section 2.9, "Connecting the RS–232 Port").
8 Make sure the output transformer is not overloaded (Section 2.10, "Transformer Output
Load Sharing").
10