United Technologies Carrier 30RQM 160, Installation, Operation And Maintenance Instructions

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5.4 - 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 guideline, and does not
make Carrier in any way liable. After wire sizing has been
completed, using the certified dimensional drawing, the installer
must verify the appropriate means of connection and define any
modifications necessary on site.
The connections provided as standard for the customer-supplied
power supply cables are designed for the number and type of
wires, listed in the table below.
The calculations of favourable and unfavourable cases are
performed by using the maximum possible current for each unit
fitted with a hydraulic kit (see the tables of electrical data notes
for the unit and the hydraulic module).
The study includes the standardised installation cases according
to IEC 60364: cables with PVC (70°C) or XLPE insulation (90°C)
with copper core; routing in accordance with table 52C of the
standard. The maximum ambient temperature is 45°C. The
maximum length mentioned is calculated to limit the voltage drop
to 5 %.
IMPORTANT: Before connecting the main power cables (L1
- L2 - L3), always check 3 phases are in the correct order
(clockwise) before proceeding to the connection on the main
disconnect switch.
Table of minimum and maximum cable sections (per phase) for connection to 30RQM/30RQP units
30RQM
/30RQP
Max. connectable section (1)
Calculation of favourable case:
-
Suspended overhead line (standardised
routing no. 17)
-
Cable with XLPE insulation
Calculation of unfavourable case:
-
Conductors in ducts or multi-
conductor cables in closed conduits
(standardised routing no. 41)
-
Cable with PVC insulation
Standard
lug
Narrow
lug
Recommended
max lug width
Section
(2)
Max length
for a voltage
drop < 5%
Cable
type
(3)
Section
(2)
Max length
for a voltage
drop < 5%
Cable
type
(3)
mm² (per
phase)
mm² (per
phase)
mm
mm² (per
phase)
m -
mm² (per
phase)
m -
160 2x70 2x95 21 1 x 50 200 XLPE Copper 2 x 50 388 PVC Copper
180
2x70 2x95 21 1 x 50 180 XLPE Copper 2 x 50 358 PVC Copper
210 2x70 2x95 21 1 x 70 210 XLPE Copper 2 x 70 380 PVC Copper
230 2x70 2x95 21 1 x 70 190 XLPE Copper 2 x 70 350 PVC Copper
240 2x70 2x95 21 1 x 70 180 XLPE Copper 2 x 70 350 PVC Copper
270
2x70 2x95 21 2 x 35 160 XLPE Copper 2 x 95 400 PVC Copper
310 2x95 2x185 21 2 x 50 200 XLPE Copper 2 x 120 430 PVC Copper
330 2x95 2x185 24,5 2 x 50 190 XLPE Copper 2 x 150 490 PVC Copper
380 2x95 2x185 24,5 2 x 70 220 XLPE Copper 2 x 150 420 PVC Copper
430
2x95 2x185 24,5 2 x 70 190 XLPE Copper 2 x 185 430 PVC Copper
470 2x240 2x240 37 2 x 95 230 XLPE Copper 2 x 240 470 PVC Copper
520 2x240 2x240 37 2 x 95 210 XLPE Copper 2 x 240 430 PVC Copper
Notes:
(1) Connection capacities actually available for each machine. These are defined according to the connection terminal size, the electrical box access opening dimensions
and the available space inside the electrical box.
(2) Selection simulation result considering the hypotheses indicated.
(3) If the maximum calculated section is for an XLPE cable type, this means that a selection based on a PVC cable type can exceed the connection capacity actually
available. Special attention must be given to selection.
The protection against direct contact at the electrical connection point is compatible with the addition of terminals extension. The installer must determine whether these
are necessary based on the cable sizing calculation.
5 - ELECTRICAL CONNECTION
23