Specifications

27
ELECTRICAL CHARACTERISTICS
• The 30HXC 075-185 and 30GX 080-175 have only one power
terminal block.
• The 30HXC 215-370 and 30GX 205-350 have two power
terminal blocks.
• 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 European 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 normative
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.
30HXC
1. The operating conditions for a standard 30HXC are
described below:
- Environmental conditions
(1)
. The environmental
classification 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
· Altitude ≤ 2000 m
(1)
· For indoor installation
· Presence of water : classification AD2
(1)
(possibility of water
droplets)
· Presence of solids: classification AE2
(1)
(presence of
insignifiant particulates)
· Presence of corrosives and contaminants, classification AF1
(negligible)
· Vibration, shock: classification AG2, AH2
Competence of personnel: classification BA4
(1)
(personnel
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.
30GX
2.The operating conditions for 30GX are described below :
- Environmental conditions
(2)
. The environmental
classification is described in standard EN 60721:
· For outdoor installation
(2)
· Ambient temperature range: - 25°C to + 46°C, classification
4K3
(2)
· Altitude ≤ 2000 m
(2)
· Presence of solids: classification 422 (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 IP44CW and
therefore fulfil this protection requirement.
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 isolating switch (if ordered) 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 characteristics not referred to
here) contact your Carrier representative.
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.
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 acceptable.
ABC
MOTOR