Kohler KCS - Transition Transfer Switches; Manual Operation Test Procedure, 150-1200 Amp Programmed Transition Transfer Switches

TP-6833 2/1618 Section 2 Installation
2.6.1 M anual Operation Test Procedure,
150--1200 Amp Programmed-
Transition Transfer Switches
Refer to Figure 2-10 through Figure 2-12 during the
following procedure.
Check the operation of both operators by following the
instructions below for both the Normal and Emergency
operators in the following sequence:
1. Disable the generator set to prevent starting and
disconnect all power sources before manually
operating the transfer switch.
2. Starting with the contactor in the Normal position,
use the maintenance handle to move the Normal
operator from the closed to the open position.
3. Move the Emergency operator from the open
position to the closed position.
4. Return the Emergency operator to the open
position and the Normal operator to the closed
position.
5. Remove the maintenance handle and store it in the
place provided on the switch.
1. Emergency contact indicator
2. Normal contact indicator
1
2
O = Open; C = Closed
Figure 2-10 Position Indicators
Transfer Switch Position Interlocked Shafts Maintenance Handle Shaft Indicators
Normal
E
N
Link
Contact shafts
Hub
Hub
Up
E:O
upper contacts open
N:C
lower contacts closed
Up
Load
Disconnected
E
N
Up
E:O
upper contacts open
N:O
lower contacts open
Down
Emergency
E
N
Down
E:C
upper contacts closed
N:O
lower contacts open
Down
Note: The link between contact shafts prevents closing both N and E contacts.
The hub and contact shaft turn in opposite directions through a cam follower mechanism.
Note: If Normal and Emergency connections are reversed, this operation is also reversed.
Figure 2-11 Maintenance Handle Positions, 150--600 Amp Model KCP Only. ALL POWER MUST BE OFF !