AERMEC NRL FC 2000, Руководство по установке, Страница: 22 / 28

22
Aermec cod. 4086995_01 05.2013
NRL FC 2000-3600 60Hz
EN
8. ELECTRICAL WIRINGS
The default NRL chillers are completely wired and only
need the connection to the power supply net, downstream
to a group switch, according to the to the regulations in
force in the country where the machine is installed.
It is also suggested to check:
• the mains supply characteristics, to ensure it is suitable
for the levels indicated in the electrical data table, also
taking into consideration any other equipment that may be
operating at the same time.
• the unit is only powered after the last (hydraulic and
electric) installations.
• Follow the connections instructions of the phase conduc
-
tors, and earth.
• the power line will have a special protection upstream
against short circuits and earth losses that sections the
system according to other users.
• the voltage should be within a tolerance of ± 10% of
the rated supply voltage of the machine (for Three-phase
units displacement max 3% between the phases). If these
parameters are not respected, contact the energy supplier.
For electrical wirings use isolated double cables according
to the standards in force in the different countries.
• it is necessary to use a omnipolar thermomagnetic
switch, in compliance with the CEI-EN standards (contact
opening of at least 3 mm), with adequate switch capability
and differential protection based on the followed electrical
data table, installed as close as possible to the machine.
• it is necessary to carry out an efficient earth connection.
The manufacturer can not be held responsible for any
damage caused by the failure and ineffective earthing of
the machine.
• For units with three-phase power check the correct
connection of the phases.
WARNING
It is forbidden to use water pipes for the earthing of the
machine.
8.1. RECOMMENDED SECTION OF ELECTRIC
CAbLES
The cable sections indicated in the table are advised for a
maximum length of 50 m.
For higher lengths or different types of cable installation, it
will be the DESIGNERS responsibility to carefully measure
the line main switch, the supply power line and the ear-
thing protection connection, and the working connection
cables:
• the length
• the type of cable
• absorption of the unit and its physical position, and
room temperature.
WARNING:
Check that all power cables are
correctly secured to the terminals when switched on for
the first time and after 30 days of use. Afterwards, check
the connection of the power cables every six months.
Slack terminals could cause the cables and components to
overheat.
ATTENTION
All electrical operations must be
carried out by qualified personnel,
in accordance with the corre-
sponding regulations, trained and
informed about the risks related to
such operations.
ATTENTION
The characteristics of electric lines
and related components must be
established by personnel authori-
sed to design electric installations,
following international regulations
and the national regulations of
the country in which the unit is
installed, in compliance with the
legislative regulations in force at
the moment of installation.
ATTENTION
For installation requirements, the
wiring layout supplied with the
unit must be compulsory referred
to. The wiring layout together
with the manuals must be kept
in good conditions and readily
accessible for future operations on
the unit.
ATTENTION
it is compulsory to check the
machine sealing before connecting
the electrical wiring. The machine
should only be powered once the
hydraulic and electric operations
are completed.
KEY
L.R.A.: Peack current
M.C.A.: Maximum current
M.O.P.: Maximum overcurrent protection
NOTE
Field wiring by others which complies to the National Electrical Code & Local Codes.
NRL Power supply Compressor [n°] Fans [n°]
TOTAL AbSORPTION
Recon FuSE [A]
L.R.A. [A] M.C.A. [A] M.O.P. [A]
Versions
without
pump
Versions
with pump
Versions
without
pump
Versions
with pump
Versions
without
pump
Versions
with pump
Versions
without
pump
Versions
with pump
2000
460V-3-60Hz
8 8
501 514 318 331 352 365 350 350
575V-3-60Hz 403 413 257 267 284 295 250 250
2250
460V-3-60Hz
8 10
594 610 380 396 427 443 400 400
575V-3-60Hz 501 513 311 324 350 362 300 350
2500
460V-3-60Hz
8 12
655 673 441 459 488 506 450 500
575V-3-60Hz 553 568 364 379 403 417 400 400
2800
460V-3-60Hz
10 12
735 753 501 519 561 580 500 500
575V-3-60Hz 603 618 433 448 488 503 450 500
3000
460V-3-60Hz
12 12
791 813 557 579 617 639 600 600
575V-3-60Hz 668 686 498 516 553 571 500 500
3300
460V-3-60Hz
12 16
844 866 610 632 670 692 600 600
575V-3-60Hz 693 711 523 541 578 596 500 500
3600
460V-3-60Hz
12 16
857 879 644 666 690 712 600 600
575V-3-60Hz 721 738 531 549 570 588 500 500