2 - Fagor Automation

Power supplies
2.
POWER SUPPLIES
94
80
Regenerative regulated power supplies
DDS
HARDWARE
Ref.1307
i
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 RST, RTS, TRS, etc.
N
From mains
S T R
u1 v1 w1
u2
v2
L1
L2
L3
L1 L2 L3
w2
1.
2
)
MPC - 4x ... (mm2 )
F. H2/41
Terminal strip for connection to mains.
The RST phases may be connected in any sequence
at the power connector.
Important note: Make sure that the phase sequence
matches the one at the line voltage input connector.
Choke RPS-XX
Cable without connectors
POWER CONNECTOR
L1 L2 L3
The ground connection of the cable shield is made from the vertical plate
(A) next to the terminal strip. See figure F. H2/41.
The following table shows the values for gap, tightening torque, sections
and other interesting data of the power feed-through terminal blocks:
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)
Wire data
232 125 41
Length to strip (mm) 27 24 12
(A)
This detail represents the terminal
strip for connecting the RPS-
80 power supply to mains.
MANDATORY. As for possible high leak currents, use a protection ground
wire with a cross section of at least 10 mm² (Cu) or 16mm² (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. RE-
COMMENDATION. 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.
1.