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8.
ELECTRICAL CONNECTIONS
The ANL units are fully factory wired and only require
connection to the power supply network, downstream
of an isolator, in accordance with the applicable wiring
standards of the country of installation.
It is recommended to check the following items:
1.
The electrical network is capable of meeting the
electrical input data shown in the table below.
2.
The unit is only powered up on completion of
any hydraulic and electrical works.
3.
Comply with the indicated phasing and earth
requirements.
4.
The power supply cable must have the appropri-
ate protection against short circuits, residual
current and earth leakage with suitable isolation
from other devices.
5.
The tolerance on the power supply voltage is
±10% of the nominal voltage rating of the unit
(for three phase units a maximum imbalance of
3% between phases is permitted). If these values
are not met please contact the power supply
company.
6.
For the electrical connections use double insu-
lated cables in accordance with applicable wiring
standards.
MANDATORY REQUIREMENTS
1.
A magneto-thermal circuit breaker conforming
to IEC-EN standards (contact aperture minimum
3 mm) is required, with adequate protection in
accordance with the data provided in the follow-
ing table, to be installed as close as possible to
the unit.
2.
An effective earth connection is required. The
manufacturer cannot be held responsible for
any damages caused by lack of, or inadequate,
earthing of the unit.
3.
For three phase units check the correct cable
phasing.
The cable cross sections shown in the following cable
are the recommended values based on a maximum 50
m cable length.
For longer cable lengths or different types of cable
installations, the DESIGNER is responsible for correctly
sizing the isolator, circuit breaker, earthing protection
and cable sizes, based on:
•
Length
•
Type of cable
•
Electrical input of the unit, distance and operat-
ing ambients.
8.1. ELECTRICAL POWER SUPPLY CONNEC-
TIONS
1.
Before making the electrical connections
ensure that the isolator is open.
2.
Open the front control panel.
3.
Use the holes provided in the lower part of the
cabinet for the electrical power supply and for
other external wiring connections.
4.
Enter cables into the control panel only through
the apertures provided.
5.
Avoid direct contact with un-insulated copper
tubes and compressors.
6.
Identify the terminals for electrical connection
with reference to the wiring diagram provided
loose with the unit.
7.
Take the power cable into the control panel and
connect to terminals U-N and PE with respect
18
All electrical works must be carried out by PERSONNEL WITH THE APPROPRIATE LEGAL QUALI-
FICATIONS, trained and aware of the risks relating to such works.
The design of the cabling and related components must be carried out by PERSONNEL WITH
APPROPRIATE QUALIFICATIONS TO DESIGN ELECTRICAL INSTALLATIONS, following interna-
tional and national standards of the location the unit is installed, in accordance with current
legal requirements.
For installation details refer to the electrical wiring schematics supplied with the unit. The
electrical wiring schematic together with the manuals must be conserved with care and
MADE AVAILABLE FOR FUTURE REFERENCE.
The weatherproof seals of the equipment must be checked before making electrical connec-
tions and the unit most only be powered on completion of all electrical and hydraulic works..
WARNING:
Using the water piping to earth the unit is
not permitted.
WARNING:
Verify that all terminals are tight on power
carrying conductors before first start-up
and 30 days after putting into service.
Afterwards check twice yearly.
Loose terminals can result in overheating
of cables and components..
TABLE OF ELECTRICAL DATA
TOTAL INPUT
L.R.A.
[A]
290 400V/3N/50Hz
2
4
130
300 400V/3N/50Hz
2
4
131
340 400V/3N/50Hz
2
4
162
400 400V/3N/50Hz
2
6
183
580 400V/3N/50Hz
2
2
262
620 400V/3N/50Hz
2
2
308
650 400V/3N/50Hz
2
2
320
LEGEND:
F.L.A.:
Maximum current input
L.R.A.:
Starting current
Sez A:
Power supply connection
• Hole for cable route.
L1
RECOMMENDED CABLE CROSS SECTION for 50 m max length
L.R.A.
F.L.A.
(Soft
(w/o
SEZ. A
Start)
pumps)
cables
cross sec-
phases
[A]
[A]
per phase
[n°]
[n°]
[mm
99
47.1
3+N
1
101
50.3
3+N
1
123
56.0
3+N
1
140
65.9
3+N
1
198
84.8
3+N
1
230
99.1
3+N
1
242
111.7
3+N
1
3+N:
3 phase + neutral
Sez B:
Control + safeties connection
EARTH:
Earth connection to the unit
IL:
Main isolator
• Hole for cable route.
ANL / 290-650
400V/3N/50Hz
PE
L2
L3 N
EARTH
SEZ. B
IL
(PE)
total
tion
cables
[mm
] [mm
]
[A]
2
2
]
[n°]
2
10
5
1
10
63
10
5
1
10
63
16
5
1
16
80
16
5
1
16
100
25
5
1
16
125
35
5
1
16
125
35
5
1
16
160
18.03. 5719210_03
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