Page 142 - EPR Catalog 2015

Motor load monitoring relays
Fields of application

The motor load monitor relay monitors the load states of (e.g. pressure transducers, current measurement), cos M
single-phase and three-phase asynchronous motors. monitoring is a more precise and economical alternative.
The evaluation of the phase angle between current and volt- The motor is used as a sensor for its own load status.
age allows a very precise monitoring of the load states.
Pump control Filter pollution
2 Compared with other conventional measuring principles
Dry-running protection
Main applications
– Pump monitoring 1SVC 110 000 F 0470 1SVC 110 000 F 0471

– Dry-running protection (underload) Starting time delay Detected fault - installation is Starting time delay Detected fault - installation is
– Closed valves (overload) switched off switched off
– Pipe break (overload)
– Heating, air-conditioning, ventilation Response delay Response delay
– Monitoring of filter pollution
– V-belt breakage (underload) Ventilator monitoring Filter pollution
– Closed shutters/valves (overload)
– Air ventilating volume V-belt monitoring
– Agitating machines
– High consistency within the tank (overload) 1SVC 110 000 F 0472 1SVC 110 000 F 0473
– Pollution of the tank (overload)
– Transport/Conveyance Starting time delay Detected fault - installation is Starting time delay Detected fault - installation is
– Congested conveyor belts (overload) switched off switched off
– Jamming of belts (overload)
– Material accumulation in spiral conveyors (overload) Wiring examples (for motor
– Lifting platforms
– Machine installation currents ͧ 20 A)
– Wear of tools, e.g. worn saw blades in circular saws,
50-60 Hz
etc. (overload) L1
– Tool breakage (underload) L2
– V-belt drives (breakage underload) L3
N
Wiring examples (for motor currents ͨ 20 A)

50-60 Hz 50-60 Hz
L1 L1
L2 N
L3
N

K1 1SVC 110 000 F 0131 K1 1SVC 110 000 F 0132 kK 1SVC 110 000 F 0131
lL
U VW U1 U2
K1
M 3~ M 1~ U VW

M 3~

50-60 Hz ~~ 110-500 V, 15-400 Hz 110-240 V 15-400 Hz 50-60 Hz
L1 L1 L1
L2 L2 N
L3 L3
N

K1 1SVC 110 000 F 0133 DC AC K1 1SVC 110 000 F 0133 kK 1SVC 110 000 F 0132
lL
U VW U VW
K1
M 3~ M 3~ U1 U2

M 1~

2/75 ABB | Catalog Electronic Products and Relays 2015 | 2CDC 110 004 C0210