Electrical Characteristics; 30Hxc; 30Gx; 30Hxc/Gx - Carrier 30HXC Series Installation, Operation And Maintenance Instructions

12 - ELECTRICAL CHARACTERISTICS

• The 30HXC 080-190 and 30GX 082-182 have only one
power disconnect/isolating switch.
• The 30HXC 200-375 and 30GX 207-358 have two power
disconnect/isolating switches.
• The control box incorporates the following as standard:
- Starters and motor protection devices for each compressor
and the fans
- Control components
• Connections on site:
All mains connections and electrical installation must be
carried out in accordance with the directives applicable to
the site.
• The 30HXC and 30GX are designed to facilitate
compliance with these directives. The engineering of the
electrical equipment for the 30HXC and 30GX takes
account of European standard EN 60204-1 (safety of
machinery - electrical equipment of machines - Part 1:
general rules).
IMPORTANT
Standard EN 60204-1 is a good means of responding to the
requirements of the Machinery Directive § 1.5.1. The norma-
tive recommendation IEC 364, is generally recognized as
meeting the requirements of the installation regulation.
Annex B of standard EN 60204-1 may be used to describe the
electrical characteristics under which the machines operate.

12.1 - 30HXC

1. The operating conditions for a standard 30HXC are
described below:
- Environmental conditions
tion is described in standard IEC 364 § 3:
· Ambient temperature range: + 6°C to + 40°C,
classification AA4
· Humidity range (non condensing)
50 % rh at 40°C
90 % rh at 20°C
(1)
· Altitude - 2000 m
· For indoor installation
· Presence of water: classification AD2
water droplets)
· Presence of solids: classification AE2
insignifiant particulates)
· Presence of corrosives and contaminants, classification
AF1 (negligible)
· Vibration, shock: classification AG2, AH2
Competence of personnel: classification BA4
qualified in accordance with IEC 364).
(1)
The protection standard required in respect of this
classicfication is IP21B (in accordance with the reference
document IEC 529). All 30HXC have a protection standard
of IP23C and therefore fulfil this protection requirement.

12.2 - 30GX

2. The operating conditions for 30GX are described below:
- Environmental conditions
tion is described in standard EN 60721:
· For outdoor installation
(1)
. The environmental classifica-
(1)
(possibility of
(1)
(presence of
(1)
(personnel
(2)
. The environmental classifica-
(2)
· Ambient temperature range: - 18°C to + 46°C,
(2)
classification 4K3
(2)
· Altitude 2000 m
£
· Presence of solids: classification 4S2 (presence of
insignifiant particulates)
· Presence of corrosives and contaminants, classification
4C2 (negligible)
· Vibration, shock: classification 4M2
Competence of personnel: classification BA4(2) (personnel
qualified in accordance with IEC 364).
(2)
The protection standard required in respect of this
classicfication is IP43BW (in accordance with the reference
document IEC 529). All 30GX have a protection standard
of IP45CW and therefore fulfil this protection requirement.

12.3 - 30HXC/GX

3. Fluctuation in power supply frequency: ± 2 Hz
4. Overcurrent protection for the power supply conductors is
not supplied with the device.
5. The factory-fitted disconnect/isolating switch is a type "a"
isolator. (EN60204-1 § 5.3.2).
NOTE: If particular aspects of an installation require
characteristics other than those listed above (or characteris-
tics not referred to here) contact your Carrier representative.
12.3.1 - Power supply
The power supply must conform to the specification on the
chiller nameplate. The supply voltage must be within the range
specified in the electrical data table.
For connections refer to the wiring diagrams.
WARNING: Operation of the chiller with an improper supply
voltage or excessive phase imbalance constitutes abuse which
will invalidate the Carrier warranty. If the phase imbalance
exceeds 2% for voltage, or 10% for current, contact your
local electricity supply at once and ensure that the chiller is
not switched on until corrective measures have been taken.
12.3.2 - Voltage phase imbalance (%):
100 x max. deviation from average voltage
Average voltage
Example:
On a 400 V - 3 ph - 50 Hz supply, the individual phase voltages
were measured to be:
AB = 406 V ; BC = 399; AC = 394 V
Average voltage = (406 + 399 + 394)/3 = 1199/3
= 399.7 say 400 V
Calculate the maximum deviation from the 400 V average:
(AB) = 406 - 400 = 6
(BC) = 400 - 399 = 1
(CA) = 400 - 394 = 6
The maximum deviation from the average is 6 V. The greatest
percentage deviation is:
100 x 6/400 = 1.5 %
This is less than the permissible 2% and is therefore accepta-
ble.
MOTOR
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