Section VIII - Technical data
Electric cable size and fuses
Important
NOTICE!
The voltage on the vacuum pump terminals must not deviate more than 10% of the
nominal voltage.
It is however highly recommended to keep the voltage drop over the supply cables
at nominal current below 5% of the nominal voltage (IEC 60204-1).
• If cables are grouped together with other power cables, it may be necessary to use
cables of a larger size than those calculated for the standard operating conditions.
• Use the original cable entry. See section Dimension drawings. To preserve the IP
protection degree of the electric cubicle and to protect its components from dust
from the environment, it is mandatory to use a proper cable gland when connecting
the supply cable to the Vacuum pump.
• Local regulations remain applicable if they are stricter than the values proposed below.
Caution:
• Always double-check the fuse size versus the calculated cable size. If required, reduce
fuse size or enlarge cable size.
• Cable length should not exceed the maximum length according to IEC60204 table 10
Leakage breaker (optional)
If the installation requires a leakage breaker, always use an all current sensitive leakage
breaker, RCM or RCD Type B (according to IEC/EN 60755) with a sufficient trip level.
Currents and fuses
IEC and UL/cUL approval
Vacuum pump specification
Itot
Imax undervoltage
Primary Secondary Primary Secondary
Pump
Voltage Freq.
Secondary
voltage
autotran-
sformer
Approval
Itot
Itot
Itot
Itot
V
Hz
A
A
A
A
QSV 205-345
380
60
IEC
18,4
20,4
QSV 205-345
400
50
IEC
17,4
19,4
QSV 205-345
460
60
IEC/
CSA/UL
15,2
16,9
QSV 205-345
200
50
400
IEC
34,9
17,4
38,8
19,4
QSV 205-345
230
60
460
CSA/UL
30,3
15,2
33,7
16,9
QSV 205-345
500
50
400
IEC
14,0
17,4
15,5
19,4
QSV 205-345
575
60
460
CSA/UL
12,1
15,2
13,5
16,9
QSV 430
380
60
IEC
25,2
28,0
Quincy Vacuum Pump-QSV Series
97
