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Installation, Operation, and Service Manual
Table 28 Transformer Wiring
Transformer Primary (2 each) 10 AWG, CU, stranded, black 40 inches in length.
Rectifier Output
(1 each) 2 AWG, CU, Black, 30 inches in length–24 Vdc Negative.
(1 each) 2 AWG, CU, Red, 40 inches in length–24 V dc Positive.
Control Cabinet
(1 each) 14 AWG, CU, stranded, black 60 inches in length–120 Vac
Line
(1 each) 14 AWG, CU, stranded, white 60 inches in length–Neutral
To connect the transformer wiring, do the following:
1. The (2 each) 40 inches black 10 AWG lines provide 210 Vac to 264 Vac for
transformer primary input.
2. The 60 inches black, and the 60 inches white provide the ac input to the Control
Cabinet. These wires will pass through the transformer as a raceway then be
routed into the Control Cabinet unless the 1 and 2 or 3 taps are used in the UVTR
(see “Figure 9 Typical Siren” on page 32 and “Figure 33 Transformer Rectifier
Wiring to Control Cabinet” on page 79).
The 60 inch black and the 60 inch white provide the 120 Vac input to the Control
Cabinet. It connects the terminal block in the UVTR labeled 1 and 2 (60 Hz) or 1
and 3 (50 Hz) to UV TB1: DIN mounted terminal blocks labeled L1 and N.
3. The 30 inch black 2-AWG line provides the 24 Vdc negative to the Control
Cabinet. It connects the terminal block in the UVTR labeled “-“ and the 5/16 inch
(-) ground stud on the backplane of the siren controller.
4. The 40 inch red 2 AWG line provides 24 Vdc positive voltage to the Control
Cabinet. It connects to the terminal block in the UVTR labeled “+” and to the
200 A fuse terminal 2.
AC Line Wire Terminations
210 Vac to 264 Vac operation
Service
disconnect
Transformer
Transformer Primary: 2 each #10 black wires L1
1
L2
4 (60 Hz)/5 (50 Hz)
115 Vac Tap
Service
disconnect
Transformer
Transformer Secondary
1
2 (60 Hz)/3 (50 Hz)
NOTE
: Cap all unused taps with wire nuts.
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