ABB RET 541 - Page 42

Table 22: 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
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
Transformer Terminal RET 541, RET 543, RET 545
1MRS755543
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