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1MRS755225
Transformer Terminal
Technical Reference Manual, General
RET 54_
Table 3.2.-2
Hardware versions of RET 541, 7I/2U transformers
HW modules
Order number
RET5
41A_231A
AAA
RET5
41A_231B
AAA
RET5
41A_231C
AAA
RET5
41A_231A
AAB
RET5
41A_231B
AAB
RET5
41A_234A
AAA
RET5
41A_234B
AAA
RET5
41A_234C
AAA
RET5
41A_234A
AAB
RET5
41A_234B
AAB
Analog interface
Current trafo 1/5 A
7
7
7
7
7
7
7
7
7
7
Voltage trafo 100 V
2
2
2
2
2
2
2
2
2
2
Main processor boards
CPU module
1
1
1
1
1
1
1
1
1
1
Power supply boards
PS1: 80...265 VDC/AC (High)
1
1
1
1
PS1: 80...265 VDC /AC (Medium)
1
1
1
1
PS1: 18...80 VDC (Low)
1
1
PS2: 80...265 VDC /AC
PS2: 18...80 VDC
Digital I/O boards
BIO1: threshold voltage 155 VDC
1
1
1
1
BIO1: threshold voltage 80 VDC
1
1
1
1
BIO1: threshold voltage 18 VDC
1
1
BIO2: threshold voltage 155 VDC
BIO2: threshold voltage 80 VDC
BIO2: threshold voltage 18 VDC
Analog I/O board
RTD/analog module
1
1
1
1
1
Display boards
Graphic HMI display, fixed
1
1
1
1
1
1
Graphic HMI display, external
1
1
1
1
Mechanic
1/2 enclosure
1
1
1
1
1
1
1
1
1
1
Digital inputs
15
15
Power outputs, single pole
0
0
Power outputs, double pole
5
5
Signal outputs (NO)
2
2
Signal outputs (NO/NC)
5
5
Supervised trip circuits
2
2
IRF outputs
1
1
RTD/analog inputs
0
8
Analog outputs
0
4