ABB VHK 20 - Page 3

IB 6.2.7.7-3I
3
TABLE OF CONTENTS (CONTINUED)
APPENDIX............................................................................................................................ 18
FIGURE A1 - ...CIRCUIT BREAKER ASSEMBLY WITH LIFTING YOKE INSTALLED .................... 18
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IGURE A2 - CIRCUIT BREAKER REAR - MODEL 21 ......................................................... 19
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IGURE A3 - FRONT CIRCUIT BREAKER PANEL - MODEL 21 ............................................ 20
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IGURE A4 - FRONT CIRCUIT BREAKER PANEL - MODEL 30 ............................................ 21
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IGURE A5 - MANUAL CHARGING OF ELECTRICALLY OPERATED CIRCUIT BREAKERS ....... 22
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IGURE A6 - RACKING MECHANISM & INTERLOCKS......................................................... 23
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IGURE A7 - RACKING MECHANISM - FINAL ADJUSTMENT ............................................... 24
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IGURE A8 - METHOD OF RACKING CIRCUIT BREAKER .................................................... 25
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IGURE A9 - CONTACT PRESSURE (MODELS 21 AND 80)................................................. 26
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IGURE A10 - TRIP LATCH ENGAGEMENT ADJUSTMENT .................................................... 27
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IGURE A11 - CONTROL DEVICE ADJUSTMENT ................................................................. 28
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IGURE A12 - TYPICAL DC SCHEMATIC OF CONTROL CIRCUIT .......................................... 29
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IGURE A13 - TYPICAL AC SCHEMATIC OF CONTROL CIRCUIT........................................... 30
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ABLE A1 - CONTROL CIRCUIT OPERATING VOLTAGE RANGE ........................................ 31
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ABLE A2 - CONTROL CIRCUIT TYPICAL CURRENT VALUES............................................ 31
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ABLE A3 - VHK OPERATING PARAMETERS.................................................................. 32
These instructions do not purport to cover all details or variations nor to provide for every possible
contingency to be met in connection with installation, operation, or maintenance. Should further
information be desired or should particular problems arise which are not covered sufficiently for the
purchaser’s purpose the matter should be referred to the nearest District Office or send E-mail to:
dsinfo@ustra.mail.abb.com.