1MRS755225
Transformer Terminal
Technical Reference Manual, General
RET 54_
13
Table 3.2.-3 Hardware versions of RET 541, 8I/1U transformers
HW modules
Order number
RET541A_232AAAA
RET541A_232BAAA
RET541A_232CAAA
RET541A_232AAAB
RET541A_232BAAB
RET541A_235AAAA
RET541A_235BAAA
RET541A_235CAAA
RET541A_235AAAB
RET541A_235BAAB
Analog interface
Current trafo 1/5 A 8888888888
Voltage trafo 100 V 1111111111
Main processor boards
CPU module 1111111111
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 11111
Display boards
Graphic HMI display, fixed 1 1 1 1 1 1
Graphic HMI display, external 1 1 1 1
Mechanic
1/2 enclosure 1111111111
Digital inputs
15 15
Power outputs, single pole
00
Power outputs, double pole
55
Signal outputs (NO)
22
Signal outputs (NO/NC)
55
Supervised trip circuits
22
IRF outputs
11
RTD/analog inputs
08
Analog outputs
04