Page 124 - EPR Catalog 2015

Grid feeding monitoring relays -
Voltage and frequency monitoring functions
Technical data - CM-UFD.Mxx

Type CM-UFD.M22 CM-UFD.M31 CM-UFD.M33

Output circuits

2 Kind of outputs 11-12/14 (15-16/18) 1st c/o (SPDT) contact, tripping relay for switching device 1 (DDI)
21-22/24 (25-26/28) 2nd c/o (SPDT) contact, tripping relay for switching device 2 (DG)

31-32/34 (35-36/38) 3rd c/o (SPDT) contact, closing command for breaker motor

Operating principle 11-12/14 closed-circuit principle

21-22/24 open- or closed-circuit closed-circuit principle
31-32/34 principle configurable open-circuit, closed-circuit, disabled or

synchronous with R1/R2 configurable

Contact material AgNi alloy, Cd-free 300 V
Rated operational voltage Ue IEC/EN 60947-1 250 V

Minimum switching voltage / minimum switching current 24 V / 10 mA

Maximum switching voltage / maximum switching current see load limit curves

Rated operational current Ie AC-12 (resisitive) at 230 V 4 A
(IEC/EN 60947-5-1) AC-15 (inductive) at 230 V 3 A

DC-12 (resistive) at 24 V 4 A

DC-13 (inductive) at 24 V 2 A

Mechanical lifetime 30 x 106 switching cycles

Electrical lifetime at AC12, 230 V AC, 4 A 50 x 103 switching cycles

Maximum fuse rating to achieve short-circuit protection n/c contact 10 A fast-acting 10 A fast-acting or circuit breaker 10 A with B

characteristic

n/o contact 10 A fast-acting 10 A fast-acting or circuit breaker 10 A with B
characteristic

Maximum closing current (short time) t < 20 ms 30 A

Conventional thermal current Ith t < 80 ms 17 A
IEC/EN 60947-1 5 A

General data on request
MTBF

Repeat accuracy (constant parameters) < ±0.5 %

Duty time 100 %

Dimensions (W x H x D) product dimensions 108 x 90 x 67 mm (4.25 x 3.54 x 2.64 in)

packaging dimensions 121 x 99 x 71 mm (4.76 x 3.90 x 2.80 in)

Weight net weight 0.306 kg (0.675 lb)

gross weight 0.360 kg (0.794 lb)

Material of housing PA666FR

Mounting DIN rail (IEC/EN 60715) TH 35-7.5 and TH 35-15, snap-on mounting
Mounting position without any tool

any

Minimum distance to other units horizontal / vertical not necessary

Degree of protection housing / terminals IP20

Electrical connection fine-strand with wire end ferrulle 1 x 0.25-4 mm² (1 x 24-12 AWG), 2 x 0.25-0.75 mm² (2 x 24-18 AWG)
Wire size fine-strand without wire end ferrule 1 x 0.2-4 mm² (1 x 24-12 AWG), 2 x 0.2-1.5 mm² (2 x 24-16 AWG)

Stripping length rigid 1 x 0.2-6 mm² (1 x 24-10 AWG), 2 x 0.2-1.5 mm² (2 x 24-16 AWG)
Tightening torque 8 mm (0.31 in)
0.5-0.6 Nm (4.4 -5.3 lb.in)

Environmental data operation -20...+60 °C
Ambient temperature ranges storage -20...+80 °C
3K5 (w/o condensation, w/o icing)
Climatic class (EN 50178) 6 x 24 h cycle, 55 °C, 95 % RH
Damp heat, cyclic (IEC/EN 60068-2-30) Class 2
Vibration, sinusoidal (IEC/EN 60255-21-1) Class 2
Shock (IEC/EN 60255-21-2)

2/57 ABB | Catalog Electronic Products and Relays 2015 | 2CDC 110 004 C0210