21.02 – 4438830_05
29
ELECTRICAL CONNECTIONS
The units are completely wired at the factory and only require connection
to the electric power supply mains, downstream from a unit switch,
according to that envisioned by the Standards in force on this subject in the
country of installation.
It s also advised to check that:
- The electrical mains features are suitable for the absorption values
indicated in the electrical data table, also taking into consideration any
other machines functioning at the same time.
- The unit is only powered when installation has been completed
(hydraulic and electric).
- Respect the connection indications of the phase, and earth wires.
- The power supply line must have a relevant protection mounted
upstream against short circuits and dispersions to earth, which isolates
the system with respect to other utilities.
- The voltage must be within a tolerance of ±10% of the nominal power
supply voltage of the machine (for unbalanced three-phase unit
max 3% between the phases). Whenever these parameters are not
respected, contact the electric energy public body.
- For electric connections, use the cables with double isolation according
to the Standards in force on this subject in the different countries.
it is mandatory:
- The use of an omnipolar magnet circuit breaker switch, in compliance
with the current Standards (contact opening at least 0.12 in), with
suitable cut-off power and differential protection on the basis of the
electric data table shown below, installed as near as possible to the
appliance.
- To make an effective earth connection. The manufacturer cannot
be considered responsible for any damage caused by the lack of or
ineffective appliance earth connection.
- For units with three-phase power supply, check the correct connection
of the phases.
ATTENTION
• All the electrical operations must be carried out by personnel in
possession of the necessary qualifications by law, suitably trained and
informed on the risks related to these operations.
• The characteristics of the electrical lines and of the related
components must be determined by staff qualified to design
electrical systems, in compliance with the international and national
regulations of the place of installation of the unit and in compliance
with the regulations in force at the moment of installation
• For the installation requirements refer only to the wiring diagram
supplied with the unit. - The wiring diagram along with the manuals
must be kept in good condition and always available for any future
servicing on the unit.
• It is mandatory to verify that the machine is watertight before making
the electrical connections and it must only be powered up after the
hydraulic and electrical works have been completed.
• If the supply cord is damaged, it must be replaced by the manufacturer
or its service agent or a similarly qualified person in order to avoid a
hazard
ELECTRICAL DATA
The cable section shown in the table are recommended for maximum
lengths of 50m. For longer lengths or different cable laying,
it is up to the PLANNER to calculate the appropriate line switch, the power
supply line as well as the connection to the earth wire and connection
cables depending on:
- The length
- The type of cable
- The absorption of the unit and the physical location, and the ambient
temperature.
ELECTRICAL CONNECTIONS
Size
0500
0550
0600
0650
0700
0750
0800
0900
1000
1250
1400
1500
1650
Electric data
POWER SUPPLY: 6 (230V ~ 3 60Hz)
Peak current (LRA)
A
404.1
381.2
421.2
360.8
433.1
455.7
532.4
709.5
733.6
853.0
891.8
953.8
978.8
Minimum circuit amperage (MCA)
A
125.5
130.8
136.4
141.7
182.1
217.9
237.0
277.8
314.1
339.6
362.3
417.1
465.9
Maximum overcurrent permitted by the protection device (MOP) A
181.3
182.1
192.1
175.0
233.3
269.2
292.8
351.7
388.0
424.9
447.6
526.8
575.5
POWER SUPPLY: 7 (460V ~ 3 60Hz)
Peak current (LRA)
A
210.2
188.9
217.9
182.3
212.4
222.6
268.2
319.7
331.3
387.0
404.6
456.6
484.7
Minimum circuit amperage (MCA)
A
61.3
66.1
70.9
78.5
88.6
97.5
113.9
123.2
132.2
158.1
181.0
209.3
234.4
Maximum overcurrent permitted by the protection device (MOP) A
87.6
88.6
97.2
96.4
111.0
120.0
140.2
153.7
162.7
200.0
222.9
263.8
288.9
POWER SUPPLY: 8 (575V ~ 3 60Hz)
Peak current (LRA)
A
156.1
139.0
162.0
124.2
157.1
165.0
200.8
253.0
261.9
326.7
340.2
352.0
373.6
Minimum circuit amperage (MCA)
A
55.1
52.2
57.0
56.2
72.1
86.2
102.5
104.6
106.9
129.7
149.9
182.8
212.0
Maximum overcurrent permitted by the protection device (MOP) A
78.8
72.1
80.7
69.0
92.0
106.1
126.3
129.2
131.5
164.4
184.7
232.2
261.4
POWER SUPPLY: 9 (208V ~ 3 60Hz)
Peak current (LRA)
A
415.7
394.6
434.6
378.5
452.0
477.0
557.6
735.9
764.0
885.5
928.4
997.0
1025.3
Minimum circuit amperage (MCA)
A
130.3
135.6
141.2
146.5
186.9
222.8
241.8
282.6
320.4
345.9
368.6
423.4
472.1
Maximum overcurrent permitted by the protection device (MOP) A
186.1
186.9
197.0
179.8
238.1
274.0
297.6
356.6
394.3
431.2
453.8
533.0
581.7
ELECTRIC POWER CONNECTION TO THE ELECTRICAL MAINS
•
Open the external covering panels (if present)
•
Make sure that the switch is at “OFF” before opening the electric
control board for the connection of the unit to the power supply.
•
Use the plates/holes to pass the main electric power supply
cable and the cables of the other external connections under the
responsibility of the installer.
•
It is prohibited to access positions not specifically envisioned in this
manual with electric cables.
•
Avoid direct contact with non-insulated copper piping and with the
compressor.
•
Identify the clamps for the electric connection and always refer
exclusively to the wiring diagram supplied with the unit.
•
Remove any protections from the cable fixing points..
•
For the functional connection of the unit, take the power supply
cable to the electric control board inside the unit and connect it to
clamps. L1-L2-L3, N (if present), and PE respecting the polarities L1-
L2-L3 and N as phases, and PE as grounding
•
Ensure that all protections removed for the electric connection have
been restored before powering the unit electrically.
•
Close all the opened panels.
•
Turn the switch at “ON” position.
•
Position the system master switch (outside the appliance) at “ON”.
For auxiliary connection please refer to the wiring diagrams supplied
with the unit,
ELECTRIC POWER CONNECTION TO THE ELECTRICAL MAINS
ELECTRIC DATA
Содержание NXW 0500-1650
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