iii
Instruction Book
IB182942EN July 2018 www.eaton.com
DST-2-VR
+
VR-Series
+
Replacement Circuit Breaker
Table of Contents
SECTION 1: INTRODUCTION
4
1.1 VISUAL INSTRUCTION BOOKLET ESSENTIALS
4
1.2 QUICK RESPONSE CODE
4
1.3 AVAILABLE DST-2
-VR
+
CIRCUIT BREAKERS
4
SECTION 2: SAFE PRACTICES
7
SECTION 3: RECEIVING, HANDLING, AND STORAGE
8
3.1 RECEIVING
8
3.2 HANDLING
9
3.3 STORAGE
9
3.4 APPROXIMATE WEIGHT BY TYPE
9
SECTION 4: DESCRIPTION AND OPERATION
12
4.1 VACUUM INTERRUPTER
12
4.1.1 VACUUM INTERRUPTER ASSEMBLY
12
4.1.2 CONTACT EROSION INDICATOR
12
4.1.3 CONTACT WIPE AND STROKE
13
4.2 LINE AND LOAD CONDUCTOR ASSEMBLIES
13
4.3 STORED ENERGY MECHANISM
13
4.3.1 CLOSING SPRING CHARGING
13
4.3.2 CLOSING OPERATION
13
4.3.3 TRIPPING OPERATION
14
4.3.4 TRIP-FREE OPERATION
14
4.4 CONTROL SCHEMES
14
4.4.1 TIMING
14
4.5 SECONDARY CONNECTION BLOCK
14
4.6 INTERLOCKS
14
4.6.1 ANTI-CLOSE INTERLOCK
14
4.6.2 SHUTTER OPERATING MECHANISM
14
4.6.3 RACKING SYSTEM TRIP AND
SPRING RELEASE INTERLOCKS
16
4.7 RACKING MECHANISM
16
4.7.1 LEVERING SYSTEM TRIP AND
SPRING RELEASE INTERLOCKS
16
4.8 GROUNDING CONTACT
16
4.9 MISCELLANEOUS ITEMS
16
4.9.1 OPERATIONS COUNTER
16
SECTION 5: INSPECTION & INSTALLATION
20
5.1 EXAMINATION FOR DAMAGE
20
5.1.1 NAMEPLATE VERIFICATION
20
5.2
SURE CLOSE
MECHANISM ADJUSTMENT
20
5.3 MANUAL OPERATION CHECK
21
5.4 VACUUM INTERRUPTER INTEGRITY
21
5.5 LOW FREQUENCY WITHSTAND
TEST (INSULATION CHECK)
21
5.6 CONTACT EROSION AND WIPE
21
5.7 PRIMARY CIRCUIT RESISTANCE
21
5.8 ELECTRICAL OPERATIONS CHECK
21
5.9 MECHANICAL INTERLOCK (FLOOR
TRIP) OPERATIONAL CHECKS
21
5.10 OPERATION, INSERTION AND
REMOVAL (LEVERING-IN VERSION)
22
5.10.1 OPERATIONAL POSITIONS (LEVERING-IN VERSION)
22
5.10.2 INSERTION PROCEDURE (LEVERING-IN VERSION)
22
5.10.3 REMOVAL PROCEDURE (LEVERING-IN VERSION)
23
5.11 OPERATION, INSERTION, AND REMOVAL FOR 5kV AND
15kV MODELS WITH ROTARY RACKING PROVISIONS
24
5.11.1 Operational Positions (Domestic and
some Canadian Rotary Racking Versions)
24
5.11.2 5kV Insertion Procedure (DST-2-5-VR
+
250, Domestic
and Canadian Rotary Racking Version)
24
5.11.3 5kV Removal Procedure (DST-2-5-VR
+
250, Domestic
and Canadian Rotary Racking Version)
25
5.11.4 15kV Insertion Procedure (DST-2-15-VR
+
500/750
Domestic and Canadian Rotary Racking Version)
25
5.11.5 15kV Removal Procedure (DST-2-15-VR
+
500/750
Domestic and Canadian Rotary Racking Version)
26
SECTION 6: INSPECTION & MAINTENANCE
27
6.1 INSPECTION FREQUENCY
27
6.2 INSPECTION AND MAINTENANCE PROCEDURES
27
6.3 VACUUM INTERRUPTER INTEGRITY TEST
28
6.4 CONTACT EROSION AND WIPE
28
6.5 INSULATION
29
6.6 INSULATION INTEGRITY CHECK
29
6.7 PRIMARY CIRCUIT RESISTANCE CHECK
29
6.8 VR-SERIES
+
CIRCUIT BREAKER
ELEMENT MECHANISM CHECK
29
6.8.1 CLOSURE™ TEST
29
6.9 MAINTENANCE RECOMMENDATION
33
SECTION 7: REPLACEMENT PARTS
35
7.1 GENERAL
35
7.2 ORDERING INSTRUCTIONS
35
