Table of Contents
Advertisement
Connect power source load conductors to clearly marked transfer
mechanism terminal lugs as follows:
1.
Connect UTILITY (NORMAL) power source cables to switch
terminals N1, N2.
2.
Connect EMERGENCY (STANDBY) source power cables to
transfer switch terminals E1, E2.
3.
Connect customer LOAD leads to switch terminals T1, T2.
Conductors must be properly supported, of approved insulative
qualities, protected by approved conduit, and of the correct wire
gauge size in accordance with applicable codes.
Be sure to maintain proper electrical clearance between live metal
parts and grounded metal. Allow at least 1/2 inch for 100-400
amp circuits.
2.5
CONNECTING START CIRCUIT
WIRES
Control system interconnections (Electrical Data section) consist
of UTILITY 1 (N1) and UTILITY 2 (N2), and leads 23 and 194.
Recommended wire gauge sizes for this wiring depends on the
length of the wire, as recommended in the following chart:
MAXIMUM WIRE LENGTH
460 feet (140m)
461 to 730 feet (223m)
731 to 1,160 feet (354m)
1,161 to 1,850 feet (565m)
3.1
FUNCTIONAL TESTS AND
ADJUSTMENTS
Following transfer switch installation and interconnection,
inspect the entire installation carefully. A competent, qualified
electrician should inspect it. The installation should comply
strictly with all applicable codes, standards, and regulations.
When absolutely certain the installation is proper and correct,
complete a functional test of the system.
Perform functional tests in the exact order pre-
sented in this manual, or damage could be done
to the switch.
IMPORTANT: Before proceeding with functional tests, read and
make sure all instructions and information in this section are
understood. Also read the information and instructions of labels
and decals affixed to the switch. Note any options or accessories
that might be installed and review their operation.
4
Section 3 — Operation
RTS "HS" Type Transfer Switch
RECOMMENDED WIRE
SIZE
No. 18 AWG.
No. 16 AWG.
No. 14 AWG.
No. 12 AWG.
3.2
MANUAL OPERATION
DANGER
Do NOT manually transfer under load.
Disconnect transfer switch from all power
sources by approved means, such as a main
circuit breaker(s).
A manual HANDLE is shipped with the transfer switch. Manual
operation must be checked BEFORE the transfer switch is operated
electrically. To check manual operation, proceed as follows:
1.
Turn the generator's AUTO/OFF/MANUAL switch to OFF.
2.
Turn OFF both UTILITY and EMERGENCY power supplies to
the transfer switch, with whatever means provided (such as
the main line circuit breakers).
3.
Note position of transfer mechanism main contacts by
observing the moveable contact carrier arm.
• Manual operation handle towards the top of switch mecha-
nism - LOAD terminals (T1, T2) are connected to UTILITY
terminals (N1, N2).
• Manual operation handle towards the bottom of switch
mechanism - LOAD terminals (T1, T2) are connected to
EMERGENCY terminals (E1, E2).
Do not use excessive force when operating the
transfer switch manually or damage could be
done to the manual handle.
3.2.1 CLOSE TO NORMAL SOURCE SIDE
Before proceeding, verify the position of the switch by observing
the position of manual operation handle in Figure 3.1. If the handle
is UP , the contacts are closed in the NORMAL position, no further
action is required. If the handle is DOWN, proceed with Step 1.
Step 1: With the handle inserted into the actuating shaft, move
handle UP . Be sure to hold on to the handle as it will move
quickly after the center of travel.
3.2.2 CLOSE TO EMERGENCY SOURCE SIDE
Before proceeding, verify the position of the switch by observing
the position of the manual operation handle in Figure 3.1. If the
handle is DOWN, the contacts are closed in the EMERGENCY
(STANDBY) position. No further action is required. If the handle is
UP , proceed with Step 1.
Step 1: With the handle inserted into the actuating shaft, move the
handle DOWN. Be sure to hold on to the handle as it will
move quickly after the center of travel.
3.2.3 RETURN TO NORMAL SOURCE SIDE
Manually actuate switch to return manual operating handle to the
UP position.
Advertisement
Table of Contents
