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Instruction Book IB019009EN November 2017 www.eaton.com
AK-2-25, AK-2A-25, & AK-3A-25 LV-VSR
Breaker-To-Motor Starter Conversion
Table of Contents
SECTION 1: INTRODUCTION
4
1.1 AVAILABLE MOTOR STARTER REPLACEMENTS
4
SECTION 2: SAFE PRACTICES
7
SECTION 3: RECEIVING, HANDLING, AND STORAGE
8
3.1 RECEIVING
8
3.2 HANDLING
8
3.3 STORAGE
8
3.4 LV-VSR APPROXIMATE WEIGHTS
8
SECTION 4: DESCRIPTION AND OPERATION
13
4.1 ELECTRICAL CONTROL
13
4.2 BUSHING & DISCONNECTING CONTACT ASSEMBLIES
13
4.3 SECONDARY CONNECTION BLOCK
14
4.4 INTERLOCKS
14
SECTION 5: INSPECTION
15
5.1 EXAMINATION FOR DAMAGE
15
5.2 ELECTRONIC OVERLOAD RELAY C440
16
5.3 MANUAL OPERATIONAL CHECK
18
5.4 ELECTRICAL OPERATIONAL CHECKS
18
SECTION 5.A: INSTALLATION OF AK-2-25 LV-VSR
19
5.A.1 CELL MODIFICATION INSTRUCTIONS
19
5.A.2 COMPARTMENT DOOR MODIFICATIONS
19
5.A.3 INSERTION PROCEDURE
20
5.A.4 REMOVAL PROCEDURE
21
SECTION 5.B: INSTALLATION OF AK-2A-25 LV-VSR
22
5.B.1 CELL MODIFICATION INSTRUCTIONS
22
5.B.2 INSERTION PROCEDURE
22
5.B.3 REMOVAL PROCEDURE
23
SECTION 6: INSPECTION AND MAINTENANCE
24
6.1 INTRODUCTION
24
6.2 FREQUENCY OF INSPECTION
24
6.3 INSPECTION & MAINTENANCE PROCEDURES
24
6.4 VACUUM INTERRUPTER INTEGRITY TEST
25
6.5 INSULATION
25
6.6 INSULATION INTEGRITY CHECK
25
6.7 MECHANISM CHECK
26
6.8 LUBRICATION
26
6.9 PRIMARY CIRCUIT RESISTANCE CHECK
26
6.10 MAGNET OPERATING RANGE
26
SECTION 7: REPLACEMENT OF COMPONENTS
28
7.1 GENERAL
28
7.1.1 ORDERING INSTRUCTIONS
28
