Gardner Denver AirSmart VS135A, Руководство по эксплуатации и обслуживанию

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13-18-607 Page 15
It is mandatory that any water-cooled unit be installed in a shelter heated to
temperatures above freezing (40
°
F., 5
°
C).
Please refer to Section 6 of this manual for detailed instructions on the installation, operation and
maintenance of the water-cooled heat exchangers.
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 2-2, for a
summary of maximum package current consumption values.
460-575 VOLT VS-135 and VS-170 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
VS-135 460 215.36 265.36 350 or 2 sets of 3/0 300 or 2 sets of 2/0
Sets of wires are sized with
derate for 2 parallel sets in a
single conduit.
VS 135 575 148.70 182.45 4/0 3/0
VS-170 460 305.36 377.86 2 sets of 300 500 or 2 sets of 4/0
Sets of wires are sized with
derate for 2 parallel sets in a
single conduit.
VS 170 575 214.70 264.95 350 or ( 3/0 (2) ) 300 or ( 2/0 (2) )
2/0 wire sized for 2 parallel sets
of conductors in 1 conduit at 40
degrees C ambient.
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 2-2 – PACKAGE MAXIMUM CURRENT CONSUMPTION SUMMARY