S225-12-1
19
!
SAFETY
FOR LIFE
PRODUCT INFORMATION
Introduction
Cooper Power Systems QD3/T350 Main Moveable Con-
tact Assembly Kit and installation instructions gives cus-
tomers the ability and guidance to replace the main move-
able contacts during maintenance cycles when contact
erosion has occurred to the point of needing replacement.
Additional Information
These instructions cannot cover all details or variations
in the equipment, procedures, or process described nor
provide directions for meeting every possible contin-
gency during installation, operation, or maintenance. For
additional information, contact your representative.
Acceptance and Initial Inspection
Each moveable contact board is in good condition when
accepted by the carrier for shipment. Upon receipt,
inspect the shipping container for signs of damage.
Unpackthemoveablecontactboardandinspectitthor-
oughly for damage incurred during shipment. If damage
is discovered, file a claim with the carrier immediately.
Handling and Storage
Be careful during handling and storage of the moveable
contact board to minimize the possibility of damage. If
the moveable contact board is to be stored for any length
of time prior to installation, provide a clean, dry storage
area.
Standards
ISO 9001 Certified Quality Management System
GENERAL
The purpose of this replacement kit is to provide the parts
and installation instructions for replacing the main sta-
tionary contacts on a QD3 Quik-Drive Tap-changer.
This installation instruction is made up of four different
procedure sections:
Tap-changer Removal from Voltage Regulator
QD3/T350 Tap-changer Assembly Separation
Main Moveable and Neutral Stationary Contact
Removal and Re-assembly
Tap-changer Re-assembly
TABLE 1
Parts Supplied
Item Part Number Description Qty
1 2241325B04 Main Moveable Neutral
Contact Assembly
1
TABLE 2
Tools Required
Description Qty
Needle Nose Pliers 1
9/16 inch Deep Well Socket 1
3/8 inch Drive Ratchet Wrench 1
5/32 Allen Wrench 1
Phillips Head Screwdriver Size 1 Point 1
Diagonal Cutters 1
Phillips Head Screwdriver 1
Standard Screwdriver 1
Torque Wrench inch pounds 1
QD3/T350 MAIN MOVEABLE
CONTACT ASSEMBLY KIT
Kit 5741325B04
Refer to Service Information S225-50-42
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