4
Instruction Book IB019009EN November 2017 www.eaton.com
AK-2-25, AK-2A-25, & AK-3A-25 LV-VSR
Breaker-To-Motor Starter Conversion
SECTION 1: INTRODUCTION
The purpose of this instruction book is to provide instructions for
receiving, handling, storage, installation, operation and maintenance
of Type LV-VSR, Low Voltage - Vacuum Starter Replacement Units.
These units are horizontal draw-out type removable Vacuum Starter
Replacements for existing LV Metal-Enclosed Switchgear with
breakers of the same type and rating. LV-VSRs provide reliable
control, protection and performance, with ease of handling and
maintenance.
This book is intended to be used in conjunction with the technical
information provided with the original equipment order which
includes but is not limited to electrical control schematics and wiring
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 LV-VSR.
The LV-VSR consists of the following components: Current Limiting
Fuses, Overload Relay, and V201 Vacuum Contactor.
•
The current limiting fuses, class J AJT600EIB are primary used to
provide short-circuit protection to the vacuum contactor. During
High-Power testing the V201 vacuum contactor was confirmed to
properly coordinate with Ferraz Shawmut type class J AJT600EIB
current limiting fuses. The contactor successfully withstood the
let-though energy of each fuse for a 200kA available symmetrical
fault at 600Vac.
•
The overload relay provides longtime overload protection and
single phase protection. The solid-state Overload Relay provides
high accuracy and enhanced protection through the use of micro-
electronic packaging technology. The Overload Relay comes
standard with Trip Class 10, 15, and 20 trip characteristics and
Manual or Manual/Automatic Reset.
•
The V201 Vacuum Contactor is designed for the control of
inductive or non-inductive loads at voltages between 200 and 600,
ac.
The fuses have a micro-switch mounted to the body of the fuse
which provides blown/open indication. This switch opens the
contactor and prevents a close operation in the event of a blown/
open fuse. This feature also provides single phase protection to the
motor.
WARNING
FERRAZ SHAWMUT TYPE AOS-S MICROSWITCHES AND TYPE AJT600EIB
FUSES MUST BE USED TO RETAIN THE IEEE/ANSI CERTIFICATION.
1.1 AVAILABLE MOTOR STARTER REPLACEMENTS
Refer to Table 1.
WARNING
SATISFACTORY PERFORMANCE OF THESE VACUUM MOTOR STARTER
REPLACEMENT UNITS IS CONTINGENT UPON PROPER APPLICATION,
CORRECT INSTALLATION AND ADEQUATE MAINTENANCE. THIS
INSTRUCTION BOOK MUST BE CAREFULLY READ AND FOLLOWED IN
ORDER TO OBTAIN OPTIMUM PERFORMANCE FOR LONG USEFUL LIFE OF
THE VACUUM MOTOR STARTER.
TYPE LV-VSR VACUUM MOTOR STARTER REPLACEMENT UNITS ARE
PROTECTIVE DEVICES, AS SUCH, THEY ARE MAXIMUM RATED DEVICES.
THEREFORE, THEY SHOULD NOT UNDER ANY CIRCUMSTANCE BE APPLIED
OUTSIDE THEIR NAMEPLATE RATINGS.
ALL POSSIBLE CONTINGENCIES WHICH MIGHT ARISE DURING
INSTALLATION, OPERATION, OR MAINTENANCE, AND ALL DETAILS
AND VARIATIONS OF THIS EQUIPMENT ARE NOT COVERED BY THESE
INSTRUCTIONS. IF FURTHER INFORMATION IS DESIRED BY THE
PURCHASER REGARDING A PARTICULAR INSTALLATION, OPERATION, OR
MAINTENANCE OF THIS EQUIPMENT, THE LOCAL EATON’S ELECTRICAL
SERVICES & SYSTEMS REPRESENTATIVE SHOULD BE CONTACTED.
Table 1. LV-VSR Vacuum Motor Starter Replacement Unit Availability and Interchangeability
Vacuum Starter Replacement Type
Rated Max. Volts
(Vac)
Rated Continuous Current At
60Hz (Amps)
Rated Short Circuit kA RMS
At Rated Max. Voltage
Rated Withstand ANSI Test
Voltage Low Freq. V RMS
AK-2-25-LV-VSR-425A
600
425
200
2200
AK-2A-25-LV-VSR-425A
600
425
200
2200
AK-3A-25-LV-VSR-425A
600
425
200
2200
