Gardner Denver APEXVS7-11A, Руководство по эксплуатации и обслуживанию

Страница: 18 / 71

13-25-603 Page 17
ELECTRICAL WIRING - The compressor package is (internally) factory wired for use with the voltage
specified on the order; it is only necessary to connect power supply and ground wires to the provided wire
terminal blocks.
Electrical shock can cause injury or death. Open main disconnect switch,
lockout and tagout before working on control box.
Gardner Denver Guidelines for proper wiring, grounding and feed power conditioning -
This
compressor package is provided with a variable speed drive (VFD) to control compressor motor. The
indicated Gardner Denver guidelines for proper wiring, grounding, and feed power conditioning must be
followed in order to protect the VFD electronics. Failure to do so will void your warranty.
Electrical Wire Sizing – A certified electrician familiar with National Electric Codes and applicable local
codes shall size the electrical power wires serving the compressor package. Refer to Figure 2-3, for a
summary of maximum package current consumption values.
460 VOLT VS-11 MINIMUM COPPER SUPPLY WIRE RECOMMENDATIONS
Minimum
75ºC wire
Minimum 90ºC
wire NOTES
Model Input
Package
Amps NEC Package
Copper
Wire Copper Wire
Voltage (Estimated) Amps at
30ºC
Sized at
40ºC Sized at 40ºC
APEXVS7-11 460 28.43 34.18 8 10
The NEC requires that wire sizes be determined by using the appropriate multiplier for the conductor temperature
rating at ambient temperatures other than 30º C and then selecting the wire that has sufficient ampacity, after
correction, to meet the load requirements shown in the "NEC Package Amps @ 30ºC" column above. Wire ampacity
is to be corrected, not "Package Amps”. Additional correction multipliers apply based on more than three
conductors in one conduit. The appropriate installation and use of 75ºC and 90ºC wire is the responsibility of the
electrical professional(s) performing the installation and must be per NEC, local and state regulations as allowed. All
of the above recommended minimum wire sizes are based on all terminal connections being rated at 75ºC minimum
temperature rating and copper wire run lengths of 100 feet or less. Please note that all UL-508A listed control panels
are rated for 40ºC ambient conditions.
Figure 2-4 – PACKAGE MAXIMUM CURRENT CONSUMPTION SUMMARY