
Feeder Terminal
REF 541, REF 543, REF 545.
1MRS750443-MBG
51
Hardware modules of REF 543
Order number
REF54
3K_127AAAA
REF54
3K_127BAAA
REF54
3K_127CAAA
REF54
3K_127AABA
REF54
3K_127BABA
REF54
3K_127CABA
REF54
3K_127AAAB
REF54
3K_127BAAB
REF54
3K_127AABB
REF54
3K_127BABB
REF54
3K_129AAAA
REF54
3K_129BAAA
REF54
3K_129CAAA
REF54
3K_129AABA
REF54
3K_129BABA
REF54
3K_129CABA
REF54
3K_129AAAB
REF54
3K_129BAAB
REF54
3K_129AABB
REF54
3K_129BABB
Analogue interface
Sensor channels (current or voltage)
9 9 9
9 9
9 9 9
9 9
Current transformer 1/5 A
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
Current transformer 0.2/1 A
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Voltage transformer 100 V
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
Main processor boards
CPU module
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Power supply boards
PS1: 80...246 Vdc/ac (High)
1
1
1
1
1
1
1
1
PS1: 80...265 Vdc/ac (Medium)
1
1
1
1
1
1
1
1
PS1: 18...80 Vdc (Low)
1
1
1
1
PS2: 80...265 Vdc/ac
PS2: 18...80 Vdc
Digital I/O boards
BIO1: threshold voltage 155 Vdc
1
1
1
1
1
1
1
1
BIO1: threshold voltage 80 Vdc
1
1
1
1
1
1
1
1
BIO1: threshold voltage 18 Vdc
1
1
1
1
BIO2: threshold voltage 155 Vdc
1
1
1
1
1
1
1
1
BIO2: threshold voltage 80 Vdc
1
1
1
1
1
1
1
1
BIO2: threshold voltage 18 Vdc
1
1
1
1
Analogue I/O board
RTD/analogue module
1 1 1 1 1 1 1 1 1 1
Display boards
Graphic HMI display, fixed
1 1 1 1
1
1 1 1 1 1 1
Graphic HMI display, external
1 1 1 1
1 1 1 1
Mechanical design
1/2 enclosure
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Digital inputs
25
25
Power outputs, single-pole
2
2
Power outputs, double-pole
9
9
Signal outputs (NO)
2
2
Signal outputs (NO/NC)
5
5
Supervised trip circuits
2
2
IRF outputs
1
1
RTD/analogue inputs
0
8
Analogue outputs
0
4