experience and judgment and may not cover all contingencies. If further information is required, an Eaton sales office should be consulted.

Sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other

contractual agreement between Eaton and the purchaser.

THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF FITNESS

FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT

BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON. THE CONTENTS OF THIS DOCUMENT

SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES.

In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or other-wise for any

special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment,

plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the

DESCRIPTION AND OPERATION .....................11

INSPECTION, MAINTENANCE, AND INSTALLATION .....16

REPLACEMENT OF COMPONENTS ................. 20

REMOVAL OF PHASE BARRIERS AND FUSE .......... 25

REPLACEMENT PARTS ........................... 26

and handling, storage, installation, operation and maintenance of

Replacement (also referred to as VSR-Series). The Vacuum Starter

Replacement units are designed to be used in existing type VCP-W

metalclad switchgear and provide equal of superior electrical and

mechanical performance as compared to the design ratings of the

original power circuit breakers when switching motors. VSR-Series

diagrams, outline diagrams, installation plans, and procedures for

installation and maintenance of accessory items.

Satisfactory performance is dependant upon proper application,

correct installation, and adequate maintenance. It is strongly

recommended that this instruction book be carefully read and

followed in order to realize optimum performance and long useful life

of the unit.

Refer to Table 1.1

operating mechanisms. They are designed with several built-in

interlocks and safety features to provide safe and proper operating

sequences.

poles and starter frame to ground. Start the machine with output

potential at zero and increase to the test voltage. Maintain the

Connect all points of the secondary disconnect pins with a shorting

wire. Connect this wire to the high potential lead of the test

machine. Ground the starter frame. Starting with zero, increase the

voltage to 1125 RMS, 60 Hz. Maintain the voltage for one minute.

Successful withstand indicates satisfactory insulation strength of the

secondary control circuit. Remove the shorting wire.

The interrupters used in the starter are designed for long electrical

life. Replacement should be at 300,000 operations except in

required. To verify that the contacts are not worn beyond their

allowable limits, close the contactor with rated control power. Insert

the .020” contactor wear gauge, p/n 5259C11H01, between the

operating plate and the washer on the lower insulator stem of each

pole. Refer to Figure 5.3. If the gauge cannot be freely inserted

on each pole, all three interrupters must be replaced. Refer to the

section 6 for instructions on replacing the interrupters.

Testing that measures the contact resistance of the vacuum

After going through the above steps, the starter is now ready to be

operated electrically. It is preferred that this check be made with the

starter in the Test position in the switchgear compartment.

Since the Type VCPW-VSR Vacuum Motor Starter Replacement

Unit is for use in existing VCP-W Metal-Clad Switchgear, installation

procedures are similar. If it is necessary to reference anything in the

unit compartment, refer to the original instruction books supplied

with the assembly.

Refer to Figures 3.3 and 3.4, for any parts identification required

during these installation procedures.

a. The starters faceplate and barriers must be positioned properly

c. Once the starter is in the test position, it may be electrically

closed and tripped by using a control switch on the cell door, or it

may be manually tripped by means of the trip button, located on the

faceplate of the starter.

Cell code plates and circuit breaker rejection plates are required to

reject circuit breakers and breaker to vacuum starter replacement

units that do not match the electrical rating structure of the existing

plates are automatically furnished with each unit. (Rejection plates

have stamped orientation as “LH” and “RH” for clarity.) (Figure 5.5)

put in position. Carefully engage the left and right extension rails to

the fixed structure rails and ensure they are properly seated in place

(Figure 5.6). Once the extension rails are properly in place, the VSR

can be carefully loaded on the extension rails using an overhead lifter

and lifting yoke. Remove the lifting yoke when the VSR is securely

seated on the extension rails.

Push the VSR into the compartment until the TEST position is

reached as confirmed by a metallic sound of the racking latch

engaging the racking nut (Figures 5.7). Once the VSR is in the TEST

position, the extension rails can be removed.