Harmonics; General Verifications; Dip And Rsw Switches Settings; Ras-3Hvrc2 - Hitachi UTOPIA R32 Series Technical Catalogue

10 Electrical wiring
General verifications

10.1.2 Harmonics

Harmonics situation of each model regarding EN 61000-3-2 and EN 61000-3-12 is as follows:
MODELS SITUATION REGARDING EN 61000-3-2 and EN 61000-3-12 Ssc "xx"
Equipment complying with EN 61000-3-2 (professional use)
Equipment complying with EN 61000-3-12

10.2 General verifications

1 Make sure the electric components supplied by the installer (main power switches, circuit breakers, wires, connectors
and connection terminals) have been selected correctly in line with the electrical data given.
a. The electricity supply to the unit should be via an exclusive power control switch and protective circuit breaker,
certified and installed in accordance with local or national safety regulations.
b. The electricity supply for the outdoor and indoor units should be separate. Connect the voltage supply wiring for
each group of indoor units to the same outdoor unit.
2 Check that the supply voltage is between 90 and 110% of the rated voltage. Where the voltage capacity is too low, it
will not be possible to start the system due to the drop in voltage.
3 Sometimes, the refrigeration/heating system is not able to operate correctly in the following cases:
- When the system is supplied from the same supply line as other major consumers (heavy machinery, power
inverter systems, cranes, welding machinery, etc).
When the suppñy cables of the major consumers and the refrigeration/heating system are very close together.
-
In these cases, induction in the wiring to the refrigeration/heating system may arise due to a rapid change in the
electricity consumption of the above consumers and their start-up. Therefore before starting installation work, check
the regulations and standards concerning adequate protection of the power supply line.
?
N O T E
For further information, please refer to the applicable legislation in the country in which the unit is to be fitted.
4 During the preliminary preparation work of the electricity supply line for the unit, the provisions in local and national
legislation must never be violated.
5 Check that the earth cable is correctly connected.

10.3 DIP and RSW switches settings

TURN OFF all power source before setting. Without turning OFF, the switches do not work and the contents of the
setting are invalid.
Mark of " " indicates the position of dip switches. Set the dip switches according to the following figures.

10.3.1 RAS-3HVRC2


Quantity and Position of DIP Switches
!
C A U T I O N
Before changing the settings of the DSWs, the voltage supply should be disconnected. Otherwise, the new settings will not be valid.
99 TCGB0136 rev.1 - 05/2021
MODEL
RAS-3HVRC2
RAS-(4-6)H(R/N)(C/P)2E
RAS-(4-6)HV(R/N)(C/P)2E
Ssc "xx"
(KVA)
-
633
-
10