Page 143 - EPR Catalog 2015

Motor load monitoring relays
Ordering details

Description

The motor load monitor CM-LWN monitors the load of single-phase and three-phase asyn-
chronous motors. The evaluation of the phase angle between current and voltage (cos M
monitoring) allows a very precise monitoring of the load status.

1SVR 450 335 F0100 2

Ordering details Order code Price Weight
1 pce (1 pce)
Rated control supply voltage Current range Type
= measuring voltage kg (lb)

CM-LWN 24-240 V AC/DC 1SVR450335R0000 0.30 (0.66)
110-130 V AC 1SVR450330R0000 0.30 (0.66)
220-240 V AC 0.5-5 A CM-LWN 1SVR450331R0000 0.30 (0.66)
380-440 V AC 2-20 A 1SVR450332R0000 0.30 (0.66)
480-500 V AC 1SVR450334R0000 0.30 (0.66)
24-240 V AC/DC 1SVR450335R0100 0.30 (0.66)
110-130 V AC 1SVR450330R0100 0.30 (0.66)
220-240 V AC 1SVR450331R0100 0.30 (0.66)
380-440 V AC 1SVR450332R0100 0.30 (0.66)
480-500 V AC 1SVR450334R0100 0.30 (0.66)

Current transformers „Ordering details - CM-CT current transformers“ on page 131”

Characteristics
– Pump monitoring
– Under- and overload monitoring cos M in one unit
– Adjustable starting delay 0.3-30 s
– Direct measurement of currents up to 20 A
– Adjustable response time delay 0.2-2 s
– Single-phase or three-phase monitoring
– 2 x 1 c/o contact, closed-circuit principle
– 3 LEDs for status indication

1 Starting delay „Time S“
2 Response delay „Time R“

1 3 Threshold for load limit cos Mmax

2 4 Threshold for load limit cos Mmin
5 Reset button
6 Indication of operational states
U: green LED – control supply voltage
cos Mmax: red LED – cos Mmax exceeded

3 cos Mmin: red LED – below cos Mmin

4 7 Marker label
5

7

2CDC 253 010 F0013

2CDC 110 004 C0210 | Catalog Electronic Products and Relays 2015 | ABB 2/76