iii
Instruction Book
IB182917EN September 2018 www.eaton.com
DHP-VR
+
VR-Series
+
Replacement Circuit Breaker
Table of Contents
DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY
ii
SECTION 1: INTRODUCTION
4
1.1 VISUAL INSTRUCTION BOOKLET ESSENTIALS
4
1.2 QUICK RESPONSE CODE
4
1.3 AVAILABLE DHP
-VR
+
CIRCUIT BREAKERS
4
SECTION 2: SAFE PRACTICES
8
SECTION 3: RECEIVING, HANDLING, AND STORAGE
9
3.1 RECEIVING
9
3.2 HANDLING
10
3.3 STORAGE
10
3.4 APPROXIMATE WEIGHT BY TYPE
10
SECTION 4: DESCRIPTION AND OPERATION
15
4.1 VACUUM INTERRUPTER
15
4.1.1 VACUUM INTERRUPTER ASSEMBLY
15
4.1.2 CONTACT EROSION INDICATOR
15
4.1.3 CONTACT WIPE AND STROKE
16
4.2 LINE AND LOAD CONDUCTOR ASSEMBLIES
16
4.3 STORED ENERGY MECHANISM
16
4.3.1 CLOSING SPRING CHARGING
16
4.3.2 CLOSING OPERATION
16
4.3.3 TRIPPING OPERATION
17
4.3.4 TRIP-FREE OPERATION
17
4.4 CONTROL SCHEMES
17
4.4.1 TIMING
17
4.5 SECONDARY DISCONNECT CONTACT BLOCK
17
4.6 INTERLOCKS
19
4.6.1 RACKING-IN INTERLOCK
19
4.6.2 CIRCUIT BREAKER - CODE PLATE
19
4.6.3 ANTI-CLOSE INTERLOCK
19
4.6.4 FLOOR TRIPPING AND CLOSING SPRING RELEASE INTERLOCKS
19
4.6.5 RAIL LATCH
19
4.7 MISCELLANEOUS ITEMS
20
4.7.1 GROUNDING CONTACT
20
4.7.2 MOC AND TOC OPERATIONS
20
4.7.3 OPERATIONS COUNTER
20
4.7.4 RACKING DEVICE
20
SECTION 5: INSPECTION & INSTALLATION
27
5.1 EXAMINATION FOR DAMAGE
27
5.1.1 NAMEPLATE VERIFICATION
27
5.2
SURE CLOSE
MECHANISM ADJUSTMENT
27
5.3 MECHANISM OPERATED CELL (MOC) SWITCH PANTOGRAPH
ADJUSTMENT
28
5.4 MANUAL OPERATION CHECK
28
5.5 VACUUM INTERRUPTER INTEGRITY
28
5.6 INSULATION
28
5.7 CONTACT EROSION AND WIPE
28
5.8 PRIMARY CIRCUIT RESISTANCE
28
5.9 SNUBBER ADJUSTMENT
28
5.10 ELECTRICAL OPERATIONS CHECK
28
5.11 RACKING CIRCUIT BREAKER INTO CIRCUIT BREAKER COMPARTMENT
30
5.12 REMOVING CIRCUIT BREAKER FROM CIRCUIT BREAKER COMPARTMENT 30
SECTION 6: INSPECTION & MAINTENANCE
31
6.1 INSPECTION FREQUENCY
31
6.2 INSPECTION AND MAINTENANCE PROCEDURES
31
6.3 VACUUM INTERRUPTER INTEGRITY TEST
32
6.4 CONTACT EROSION AND WIPE
32
6.5 INSULATION
33
6.6 INSULATION INTEGRITY CHECK
33
6.7 PRIMARY CIRCUIT RESISTANCE CHECK
33
6.8 VR-SERIES
+
CIRCUIT BREAKER ELEMENT MECHANISM CHECK
33
6.8.1 CLOSURE™ TEST (50DHP-VR+ Models)
33
6.8.2 CLOSURE™ TEST (75/150DHP-VR+ Models)
37
6.9 MAINTENANCE RECOMMENDATION
40
SECTION 7: REPLACEMENT PARTS
42
7.1 GENERAL
42
7.2 ORDERING INSTRUCTIONS
42
