Power supplies
2.
94
Ref.1912
DDS
HARDWARE
· 82 ·
Power connectors
Terminal strip for mains connection
This connector may be used to connect the power supply to mains. When
connecting the power suppliy to mains, the phases may be connected in
any order L1-L2-L3, L1-L3-L2, L3-L1-L2, etc.
The ground connection of the cable shield is made from the vertical plate (A)
next to the terminal strip. See figure F. H2/40
.
The following table shows the values for gap, tightening torque, sections
and other interesting data of the power feed-through terminal blocks:
F. H2/40
Terminal strip for connection to mains.
T. H2/29 Technical data of the feed-through terminal blocks for mains
connection.
Connector data
RPS-80
RPS-75
RPS-45 RPS-20
Gap (mm) - - 10.16
Min./max. tightening torque (N·m) 15/20 6/8 1.2/1.5
Screw thread M8 M6 M4
Min./max. section (mm²) 35/95 16/50 0.75/10
Rated current In (A) 232 125 41
Wire data
Length to strip (mm)
27 24 12
From mains
L3
PE
L1 L2
RPS CHOKE
MPC-4x ... (mm²)
POWER
CONNECTOR
L1 L2
L3
Important note. Make sure that the phase sequence
matches the one at the line voltage input connector.
The L1-L2-L3 phases may be connected
in any sequence at the power connector.
Cable without connectors
T1 T2 T3
U1 U2 U3
(A)
This detail represents the terminal
strip for connecting the RPS-80
power supply to mains.
1
1
MANDATORY. As for possible high leak currents, use a protection ground
wire with a cross section of at least 10 mm² (Cu) or 16 mm² (Al) or two
protection ground wires with the same cross section as that of the wires
connected to the power supply terminals. Comply with local regulations on
grounding.
INFORMATION. IGBT components cannot actually be protected with fuses.
Therefore, installing protection fuses when using RPS power supplies does
not prevent a failure of the module, but it does minimize the number of
components that may be destroyed as a result of a possible failure.
RECOMMENDATION. Install fast fuses in three-phase power supply lines L1,
L2 and L3, for a higher current than the one for S6 of the RPS used. See
table T. H6/3.
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