Page 120 - EPR Catalog 2015

Grid feeding monitoring relays -
Voltage and frequency monitoring functions
Applications, connection diagram

Example of single-phase application - CM-UFD.M33 Example of three-phase application - CM-UFD.M33

L1 ᕊ L1
N ᕉ
L2
2
L3 ᕊ
N

ᕉ

ͨ6 A ͨ10 A ͨ10 A ͨ10 A ͨ6 A
A1 A2 1115 2125 A1 A2
3135 L1 L2 L3 N ͨ10 A ͨ10 A ͨ10 A
1115 2125
3135 L1 L2 L3 N

1216 1418 2226 2428 3236 3438 ᕅ ᕄᕃ ᕅ ᕄᕃ

Y3 Y2 Y1 Y0 Y3 Y2 Y1 Y0

1216 1418 2226 2428 3236 3438

K1 ᕃᕆ K1 ᕃ ᕆ
K2 ᕄᕇ K2 ᕄ ᕇ

ᕃ Control input 1, feedback loop for switching device 1 ᕈ
ᕄ Control input 2, feedback loop for switching device 2
ᕅ Control input 3 (e.g. for remote trip) 2CDC 252 005 F0014 ᕃ Control input 1, feedback loop for switching device 1 2CDC 252 006 F0014
ᕆ Switching device 1 of the section switch ᕄ Control input 2, feedback loop for switching device 2
ᕇ Switching device 2 of the section switch ᕅ Control input 3 (e.g. for remote trip)
ᕈ Inverter(s) / generator(s) ᕆ Switching device 1 of the section switch
ᕉ Transformer (if applicable) ᕇ Switching device 2 of the section switch
ᕊ Public grid ᕈ Inverter(s) / generator(s)
ᕉ Transformer (if applicable)
ᕊ Public grid

Electrical connection - CM-UFD.Mxx

A1 A2 Y1 Y2 Y3 Y0 L1 L2 L3 N

2CDC 253 007 F0014 A1-A2 Control supply voltage Us
L1, L2, L3, N Measuring inputs
CM-UFD Y1-Y0 Control input 1: Feedback from switching device 1
Y2-Y0 Control input 2: Feedback from switching device 2
ESC Test Y3-Y0 Control input 3: Remote trip, suppress Y1, suppress Y2,
U/T suppress Y1/Y2 or suppress vector shift detection
F 1115-1216/1418 Output relay 1: Relay for tripping switching device 1
of the section switch, closed-circuit principle
OK 2125-2226/2428 Output relay 2: Relay for tripping switching device 2
of the section switch, closed-circuit principle
14 11 12 24 21 22 34 31 32 3135-3236/3438 Output relay 3: Closing command for circuit breaker
18 15 16 28 25 26 38 35 36 motor, configuration possibilities: closed-circuit
principle, open-circuit principle, disabled or
synchronous with R1/R2

2/53 ABB | Catalog Electronic Products and Relays 2015 | 2CDC 110 004 C0210