Gardner Denver L30RS, Руководство пользователя и обслуживания

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7 Preparations for commissioning
29
Recommended supply cable cross-sections and fuses for multi-wire cables or three current-carrying
conductors in raceway based on 86 °F ambient temperature
Line cross section
conductor rated
Compressor type Supply
voltage
Installed
nominal motor
power
Fuse(s)
protection
(slow-blow
fuse) class J
140°F 167°F 194°F
[V] [hp] [A]
60-Hz-compressors
200V 175 AWG4/0 AWG3/0 AWG2/0
230V 150 AWG3/0 AWG2/0 AWG1/0
460V 70 AWG3 AWG4 AWG4
L30
575V
40
60 AWG4 AWG6 AWG6
L30RS
460V
40
70 AWG3 AWG4 AWG4
200V 200 MCM250 AWG4/0 AWG3/0
230V 175 AWG4/0 AWG3/0 AWG2/0
460V 90 AWG2 AWG3 AWG4
L37
575V
50
70 AWG3 AWG4 AWG6
L37RS 460V 50 90 AWG1 AWG3 AWG3
200V 250 MCM350 MCM300 AWG4/0
230V 200 MCM300 AWG4/0 AWG3/0
460V 100 AWG1/0
AWG2
AWG2
L45, L50
575V
60
80 AWG2 AWG3 AWG4
L45RS 460V 60 110 AWG1/0 AWG1 AWG2
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.
7.3.1 Check setting of the fan protection
switch (only for L30RS-L45RS)
Check the setting of the motor protection switch in
accordance with the enclosed circuit diagram for the
compressor.
Set the protection switch to the value stated in the table
corresponding to the mains voltage and frequency (see
circuit diagram).
7.3.2 Checking the setting of the control-
power transformer
DANGER
High Voltage – Hazard of Shock, Burn, or
Death.
•
The electrical connection should be
made by a qualified electrician.
•
Only perform checks and carry out work
on the screw compressor when the unit
is out of operation, depressurized, and
secured from being switched on again!
NOTICE
Incorrectly setting the control transformer poses
a risk to the trouble-free operating of the
system.
Checking the setting of the control transformer
is part of commissioning and part of regular
inspection/maintenance because the supply
voltage can change.
The correct setting should be checked by
measuring the control transformer
ʼ s output
voltage while the system is running with a load.