Moeller Rapid Link, Switching And Installation System, Page: 94 / 162

Speed controller RA-SP
01/08 AWB2190-1430GB
90
Power supply
Network configuration
The speed control unit RA-SP can not be used in every network
configuration without limitations (network configuration
according to IEC 364-3). It must be used only on three-phase
networks with earthed star point (TN-S networks).
Mains voltage, mains frequency
The ratings of the RA-SP cover European and American standard
voltages:
• 400 V, 50 Hz (EU),
• 460 V, 60 Hz (USA)
The permissible mains voltage range is:
• 380/460 V: 342 V – 0 % to 506 V + 0 %
The permissible frequency range is 50/60 Hz: 47 Hz – 0 % to
63 Hz + 0 %.
Interaction with p.f. correction equipment
The speed control unit RA-SP absorbs only a small fundamental
reactive power from the AC supply. Compensation is therefore
unnecessary.
Protective devices and cable cross-sections
The ratings of the protective devices and the cable cross-sections
required for the network connection depend on the rating of the
RA-SP and the drive’s operating mode.
The incoming circuit-breaker RA-DI (or PKZ2-ZM25-8) can switch
on the following number of speed controllers RA-SP without the
short-circuit release being tripped by the RA-SP:
– 10 to 15 (20 to 25) RA-SP...075... or
– 5 to 8 (10 to 13) RA-SP...1K1... or
– 3 ti 5 ( 7 to 9) RA-SP…2K2…
The national and regional standards (for example IEC/EN 60204)
must be observed and the necessary approvals (for example UL) at
the site of installation must be fulfilled.
When the device is operated in a UL-approved system, use only
UL-approved fuses, fuse bases and cables.
The leakage currents to earth (to EN 50178) can be greater than
3.5 mA. The RA-SP’s heat sink must hae a large-area connection
with the earth-current circuit.
h Caution!
The RA-SP must be operated on networks with power
factor correction devices only if these devices are
dampened with reactors.
h Caution!
When selecting the cable cross-section, take the voltage
drop under load conditions into account. The user is
responsible for ensuring the adherence to all other
applicable standards (e.g. IEC/EN 60204, EN 60289).
h
For further details, see „Incoming supply 400 V AC“ on
page 13.
h Caution!
The specified minimum cross-sections for PE conductors
(EN 50178, EN 61800) must be observed. Use a PE
conductor whose cross-section is as least as large as the
terminal capacity of the power terminals.
Figure 92: Earthing
PES
1.7 Nm
PE
f
10 mm
2
a
a [mm]
RA-SP2…075
RA-SP2…1K1 6.5
RA-SP2…2K2 11