12
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
RET541A_231AAAA
RET541A_231BAAA
RET541A_231CAAA
RET541A_231AAAB
RET541A_231BAAB
RET541A_234AAAA
RET541A_234BAAA
RET541A_234CAAA
RET541A_234AAAB
RET541A_234BAAB
Analog interface
Current trafo 1/5 A 7777777777
Voltage trafo 100 V 2222222222
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
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