S&C Instruction Sheet 515-600 15
Installation
STEP 4.
Remove the voltage-transformer secondary fuses and grounding circuit slugs
from the source-transfer control enclosure. See Figure 2 on page 7 for location
of these components.
STEP 5.
Prepare a weather-tight entrance in the bottom of the enclosure in accordance
with user’s practice. Install con duit and interconnection wiring between the
source-transfer control, the switch operators, the voltage trans formers, and
the current sensors (as appropriate) in accordance with the system wiring
diagram and the inter connection wiring diagram furnished with the source-
transfer control. Then, replace the fuses and slugs removed in Step 4.
STEP 6.
If three-phase voltage sensing is provided by two line-to-line connected
voltage transformers per source
:
It will be necessary to reposition the input
plug on the voltage-input isolation assembly. Remove the input plug from
Receptacle N and insert it in Receptacle V. See Figure 5.
Input plug in
Receptacle N
Receptacle V
Voltage-transformer
secondary fuse
Figure 5. Removing voltage-transformer secondary fuses
and grounding circuit slugs and repositioning the input
plug on the voltage-input isolation assembly.
Mounting frame
Pole
mounting
bracket
(catalog
number
suffix “-P1”)
Ground
lug
Figure 4. Hoisting the enclosure into position.
Lifting slings
Eyebolts
(not furnished)
