Eaton 50DHP-VR, Instruction Handbook Manual

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iii Instruction Book IB182017EN February 2017 www.eaton.com
5kV, 7.5kV, & 15kV DHP-VR
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 DHP-VR CIRCUIT BREAKERS 4
SECTION 2: SAFE PRACTICES 11
SECTION 3: RECEIVING, HANDLING, AND STORAGE 12
3.1 RECEIVING 12
3.2 HANDLING 12
3.3 STORAGE 13
3.4 APPROXIMATE WEIGHT BY TYPE 13
SECTION 4: DESCRIPTION AND OPERATION 20
4.1 VACUUM INTERRUPTER 20
4.1.1 THE INTERRUPTER ASSEMBLY 20
4.1.2 CONTACT EROSION INDICATOR 20
4.1.3 CONTACT WIPE AND STROKE 21
4.2 PHASE BARRIERS 21
4.3 BUSHINGS AND DISCONNECTING
CONTACT ASSEMBLIES 21
4.4 STORED ENERGY MECHANISM 21
4.4.1 CLOSING SPRING CHARGING 22
4.4.2 CLOSING OPERATION 22
4.4.3 TRIPPING OPERATION 22
4.4.4 TRIP-FREE OPERATION 22
4.5 CONTROL SCHEMES 22
4.5.1 TIMING 24
4.6 SECONDARY CONNECTION BLOCK 24
4.7 INTERLOCKS 24
4.7.1 BREAKER-CELL CODING PLATES 25
4.7.2 RACKING-IN INTERLOCK 25
4.7.3 ANTI-CLOSE INTERLOCK 25
4.7.4 FLOOR TRIPPING AND CLOSING
SPRING RELEASE INTERLOCKS 25
4.7.5 RAIL LATCH 25
4.8 MISCELLANEOUS ITEMS 25
4.8.1 GROUNDING CONTACT 25
4.8.2 MOC AND TOC OPERATIONS 26
4.8.3 OPERATIONS COUNTER 26
4.8.4 RACKING DEVICE 26
SECTION 5: INSPECTION & INSTALLATION 31
5.1 EXAMINATION FOR DAMAGE 31
5.1.1 NAMEPLATE VERIFICATION 31
5.2
SURE CLOSE
MECHANISM ADJUSTMENT 31
5.3 MECHANISM OPERATED CELL (MOC)
SWITCH PANTOGRAPH ADJUSTMENT 32
5.4 MANUAL OPERATION CHECK 32
5.5 VACUUM INTERRUPTER INTEGRITY 33
5.6 INSULATION 33
5.7 CONTACT EROSION AND WIPE 33
5.8 PRIMARY CIRCUIT RESISTANCE 33
5.9 SNUBBER ADJUSTMENT 33
5.10 ELECTRICAL OPERATIONS CHECK 33
5.11 RACKING BREAKER INTO CELL 34
5.12 REMOVING BREAKER FROM CELL 34
SECTION 6: INSPECTION & MAINTENANCE 35
6.1 INSPECTION FREQUENCY 35
6.2 INSPECTION AND MAINTENANCE PROCEDURES 35
6.3 VACUUM INTERRUPTER INTEGRITY TEST 36
6.4 CONTACT EROSION AND WIPE 36
6.5 INSULATION 37
6.6 INSULATION INTEGRITY CHECK 37
6.7 PRIMARY CIRCUIT RESISTANCE CHECK 38
6.8 MECHANISM CHECK 38
6.8.1 CLOSURE™ TEST 38
6.9 LUBRICATION 41
SECTION 7: REPLACEMENT PARTS 43
7.1 GENERAL 43
7.2 ORDERING INSTRUCTIONS 43