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Operating instructions
Transformator switching relay | Type TSRD
Note: Installation and commissioning
have to be undertaken by a qualified
person or a person under the supervisi-
on of a specialist.
With TSRD the both three-phase transformers and combinations of three individual single-phase transformers can be swit-
ched-on in a three-phase network without inrush currents arising. The required application is selected using DIP-switches.
Note in safety
Potential separation does not occur during switching of the TSRD as additional RC elements are connected between the
input and the output thyristor clips. To bypass the thyristors, a bypass contactor must be connected in parallel to the TSRD.
General
The required application is selected using DIP-switches. In the case of applications N and L the transformer core type must
be selected at TP1 (transformer type) The TSRD has a Message Display Output (Message 1). Depending on the DIP-switch
selections four different conditions can be displayed. The DIP-switches should be set only when the power is off.
Applications
Application D
Three-phase transformer, prima-
ry side delta or star config.
without N (neutral) (arbitrarily
loading). Winding direction
important for transformer
connection.
DIP-Switches
No.
Function
1
Error handling
2
Rotation direction recognition
Control input 1
3
(Remote-on input)
4
Control input 2
5/6
Message display 1
FSM AG | Erich-Rieder-Straße 2 | D-79199 Kirchzarten | vertrieb@fsm.ag | www.fsm.ag
Application S
Three-phase transformer, prima-
ry side star config. with N
(neutral) (arbitrarily loading).
Winding direction important for
transformer connection.
Position
OFF
ON
OFF
ON
OFF
ON
OFF
ON
5
6
OFF
OFF
ON
OFF
OFF
ON
ON
ON
Application N
3 single-phase transformers ha-
ving the same core (arbitrarily
loading). The core type is set at
TP1.
No automatic restart
Automatic restart after an error
Switched-on for clockwise phase-sequence
Switched-on for clockwise and anticlockwise phase-sequence
Control input enabled for external control signal
Switched-on without external control signal
Control input enabled for additional external control signal
Switched-on without external control signal
Function Message Display 1:
Fully-on message
OK message
Error message
Bypass contactor control
Application L
3 single-phase transformers
having the same core (arbitrarily
loading). The core type is set
at TP1.
13.09.2018
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Table of Contents
Summary of Contents for FSM TSRD
- Page 1 Potential separation does not occur during switching of the TSRD as additional RC elements are connected between the input and the output thyristor clips. To bypass the thyristors, a bypass contactor must be connected in parallel to the TSRD. General The required application is selected using DIP-switches.
- Page 2 Bypass-contactor: To protect the safety coil it is recommended to connect an RC-element parallel to the coil. > Fuse: The need in the data sheet under „Current“ defined limits are met. If this is not possible, the TSRD should accor- ding to the circuit example (see last page) are connected.
- Page 3 The numbering of the clamps of the transformer must than be changed like showed in the picture in the bottom right, L3 left and L1 right and similar connected L3 to L3 and L1 to L1 of the TSRD, for softstart the transformer without inrush current peaks, via the TSRD and only with the value of the no load current at a delta vector group of the primary side.
- Page 4 TSRD are small and long enough. This is recommended if the output of the transformer can have a short circuit, while start procdure. The fuses directly in front of the TSRD are selctive to the fuses on the input of the schematic drawing.
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