ABB RET 541 - Page 49

Table 29: Hardware versions of RET 545, 8I/1U transformers
HW modules Order number
RET545A_252AAAA RET545A_252BAAA RET545A_252CAAA RET545A_252AAAB RET545A_252BAAB
Analog interface
Current trafo 1/5 A
8 8 8 8 8
Voltage trafo 100 V
1 1 1 1 1
Main processor boards
CPU module
1 1 1 1 1
Power supply boards
PS1: 80...265 VDC/AC (High)
PS1: 80...265 VDC/AC (Medium)
PS1: 18...80 VDC (Low)
PS2: 80...265 VDC/AC
1 1 1 1
PS2: 18...80 VDC
1
Digital I/O boards
BIO1: threshold voltage 155 VDC
2 2
BIO1: threshold voltage 80 VDC
2 2
BIO1: threshold voltage 18 VDC
2
BIO2: threshold voltage 155 VDC
1 1
BIO2: threshold voltage 80 VDC
1 1
BIO2: threshold voltage 18 VDC
1
Analog I/O board
RTD/analog module
Display boards
Graphic HMI display, fixed
1 1 1
Graphic HMI display, external
1 1
Mechanic
1/2 enclosure
1 1 1 1 1
Digital inputs
34
Power outputs, single pole
3
Power outputs, double pole
11
Signal outputs (NO)
4
Signal outputs (NO/NC)
8
Supervised trip circuits
2
IRF outputs
1
RTD/analog inputs
0
Analog outputs
0
Transformer Terminal RET 541, RET 543, RET 545
1MRS755543
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