Gardner Denver EnviroAire 15, Оригинальное руководство по эксплуатации

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7. Preparations for commissioning
26
7.3 Electrical connection
(USA/CANADA Version only)
DANGER
Risk of strong damages and fire on the
electric power components.
•
The power supply to the compressor
side has to be fitted for industrial
equipment and fulfilling the
requirements of NFPA 79. Any kind of
operation outside of the stated limits of
NFPA 79 is inadmissible.
•
The electrical connection should be
made by a qualified electrician.
WARNING
If local regulations are stricter than the
values given below, observe the stricter
regulations.
WARNING
If the electrical connection is made to a
non-earthed three-phase system (IT
network), please see the corresponding
notes in the included frequency converter
documentation.
If a residual current device (RCD) is used to
monitor the earthing connection in the
system for earth faults, to prevent
interruptions only Type B devices
(adjustable trip setting and delay) may be
used.
To establish an electrical connection, proceed as
follows:
Route the supply cable through the cable gland
(-1- Fig. 10) on the control cabinet and tighten screws.
Connect the supply line to the connecting terminals as
shown in the circuit diagram.
Fig. 10
1 Electrical connection RS-version
2 Electrical connection fix speed
Recommended supply cable cross-sections and fuses 60 Hz
Compressor type
Supply voltage
[V]
Installed nominal
motor power
[hp]
Fuse protection
(slow-blow fuse)
[AgL]
Line cross section
at 30 °C/86 °F
EnviroAire VS 15 460 20 40 AWG 6
EnviroAire VS 22 460 30 50 AWG 8
Notes on the table:
Ultimately the type of cable you use, its length and
installation conditions (temperature, accumulation) are
outside the scope of our knowledge. Therefore the
above table only offers guidelines.
The gauges named in the table correspond to those in
UL508A. (Rubber sheathed cable at 86 °F and max.
55 yd cable length)
* If conditions differ (cable length, temperature and
accumulation) the gauge must be determined according
to UL508A. The cable type must also be taken into
consideration.