Carrier Aquasnap 30RW, Инструкции по установке, эксплуатации и обслуживанию

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6.2 - 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.
6.3 - 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.
6.4 - Recommended wire sections
Wire sizing is the responsibility of the installer, and depends
on the characteristics and regulations applicable to each
installation site. The following is only to be used as a guide-
line, and does not make Carrier in any way liable. After wire
sizing has been completed, using the certified dimensional
drawing, the installer must ensure easy connection and
define any modifications necessary on site.
The connections provided as standard for the field-supplied
power entry cables to the general disconnect/isolator switch
are designed for the number and type of wires, listed in the
table below.
The calculations are based on the maximum machine current
(see electrical data tables). For the design the following
standardised installation methods are used, in accordance
with IEC 60364, table 52C:
•
For units installed inside the building:
No.13: perforated horizontal cable conduit, and No.
41: closed conduit.
The calculation is based on PVC or XLPE insulated cables
with copper or aluminium core. A maximum ambient
temperature of 40°C has been taken into account. The
given wire length limits the voltage drop to < 5%.
IMPORTANT: Before connection of the main power cables
(L1 - L2 - L3) on the terminal block, it is imperative to
check the correct order of the 3 phases before proceeding
to the connection on then terminal block or the main
disconnect/isolator switch.
6.4.1 - selection table of minimum and maximum wire sections for connection to 30Rw/Rwa units
400 V-3 ph-50 hz
30RW/30RWA Minimum wire
section (mm
2
)
Wire type l (m) Maximum wire
section (mm
2
)
Wire type l (m)
020 1x 6 XLPE Cu 85 1x16 PVC Al 160
025 1x 6 XLPE Cu 80 1x16 PVC Al 155
030 1x 6 XLPE Cu 80 1x16 PVC Al 150
040 1x 6 XLPE Cu 75 1x16 PVC Al 145
045 1x 6 XLPE Cu 75 1x16 PVC Al 145
060 1x 10 XLPE Cu 90 1x25 PVC Al 165
070 1x 10 XLPE Cu 90 1x35 PVC Al 185
080 1x 16 XLPE Cu 110 1x35 PVC Al 185
090 1x 16 XLPE Cu 108 1x50 PVC Al 215
110 1x 25 XLPE Cu 135 1x70 PVC Al 230
120 1x 25 XLPE Cu 130 1x70 PVC Al 230
135 1x 35 XLPE Cu 145 1x95 PVC Al 250
150 1x 35 XLPE Cu 145 1x95 PVC Al 250
160 1x 35 XLPE Cu 142 1x120 PVC Al 260
185 1x 50 XLPE Cu 162 1x120 XLPE Al 205
210 1x 70 XLPE Cu 175 1x120 XLPE Al 205
245 1x 70 XLPE Cu 170 1x150 XLPE Al 210
275 1x 70 XLPE Cu 168 1x150 XLPE Al 210
300 1x 95 XLPE Cu 180 1x185 XLPE Al 220
S Power supply wire section (see diagram in chapter ‘Electrical connection’).
Motor