8
Connection
| Application manual: Waste water pump | 1SFC132104M0201
3 Connection
This chapter describes the electrical connections as well
as connections for communication devices that can be
connected to the softstarter.
WARNING
Mounting and electrical connections of the
softstarter shall be made in accordance with
local laws and regulations and be performed by
authorized personnel.
CAUTION
Hazardous voltage. Can cause death or serious
injury. Turn off and lock out all power supplying
this device before any work on the softstarter.
WARNING!
Apply the control supply voltage to make sure
that the bypass relays are in open position before
you connect the softstarters PSTX30...PSTX170
to operational voltage for the first time. If not, the
equipment can start accidentally. This is necessary to
avoid unintentional starting of the equipment during
the connection.
INFORMATION
ABB personell have to obey the instructions in
ABB CISE 15.4.
WARNING
Capacitors for power factor compensation
are not allowed in between the softstarter and
the motor, since this can cause current peaks
which can burn the thyristors in the softstarter. If
such capacitors are to be used, they should be
connected on the line side of the softstarter.
For more information, please see
1SFC132081M0201
- Softstarters Type PSTX30...PSTX370, Installation and
Commissioning Manual.
3.1
Main circuit
INFORMATION
The voltage dips may not be more than 5%
between softstarter and motor. The cable lenght
does not matter.
Softstarters PSTX30...PSTX370 can be connected both
In Line, see
1
Figure 1,
and Inside Delta, see
2
Figure 1.
Use wire connection for PSTX30...PSTX105 see
Figure 2
and terminal connection for PSTX142...PSTX170
see
Figure 3.
• Connect the line side to terminals 1L1, 3L2, 5L3, see
1
in
Figure 2
and
3.
• Connect the motor to terminals 2T1, 4T2, 6T3 on the
motor side, see
2
in
Figure 2
and
3.
The terminal marking is printed on the front of the
softstarter. For tightening torques and cable thickness,
1
PSTX
PSTX
1
2
1SFC132081M0201
Figure 1:
In line (1) and inside delta (2) connection
3
Line side
2T1
4T2
6T3
5L3
3L2
1L2
Motor side
1
2
1SFC132081M0201
Figure 3:
Terminal connection bars
see
chapter 3.1.1 Tightening torques and cable
dimensions.
2
1SFC132081M0201
1
2
Line side
1L1
3L2
5L3
6T3
4T2
2T1
Motor side
Figure 2:
Terminal connection clamps
2
