IB 6.2.7.7-3
APPENDIX
3
2
TABLE A3 – VHK Operating Parameters
5 VHK (X) 250
MOD 21
5 VHK-R 250
MOD 80
5VHK-R 250
MOD 80
7.5 VHK-R 500
MOD 80
15VHK-R 500
MOD 80
15VHK-R 750
MOD 80
♠
CLOSING TIME (MS)
30 - 50
30 - 50
30 - 50
30 - 50
30 - 50
OPENING TIME (MS)
14 - 24
18 - 28
18 - 28
18 - 28
18 - 28
CLOSING SPEED (FT/SEC)
2.0 - 5.0
2.0 - 5.0
2.0 - 5.0
2.0 - 5.0
2.0 - 5.0
OPENING SPEED (FT/SEC)
3.9 - 7.0
3.9 - 7.0
3.9 - 7.0
3.9 - 7.0
3.9 - 7.0
GAP (INCHES)
0.310 MIN
0.310 MIN
0.310 MIN
0.310 MIN
0.310 MIN
♣
WIPE (INCHES)
(NEW BREAKER)
0.093 - 0.101
0.093 - 0.101
0.093 - 0.101
0.093 - 0.101
0.093 - 0.101
♥
MAXIMUM MV DROP
8 MAX (1200)
7 MAX (2000)
8 MAX (1200)
7 MAX (2000)
8 MAX (1200)
7 MAX (2000)
8 MAX (1200)
7 MAX (2000)
8 MAX (1200)
7 MAX (2000)
♥
MAXIMUM MICRO-OHMS
40 MAX (1200)
35 MAX (2000)
40 MAX (1200)
35 MAX (2000)
40 MAX (1200)
35 MAX (2000)
40 MAX (1200)
35 MAX (2000)
40 MAX (1200)
35 MAX (2000)
♠
IF CLOSING TIME IS OUT OF RANGE, CLOSING SPEED IS TO BE USED TO
DETERMINE IF BREAKER PERFORMANCE IS ACCEPTABLE
♣
WIPE RANGES ARE FOR NEW BREAKERS ONLY. WIPE IS ALLOWED
TO DECREASE TO 0.031”.
♥
READING WITH 200 AMPS DC FLOWING. CIRCUIT BREAKER
RESISTANCE IS ALLOWED TO INCREASE BY 100% FOR USED BREAKERS.
