Page 72 - EPR Catalog 2015

Measuring and monitoring relays
Monitoring features and application ranges

Single-phase current and voltage monitoring Three-phase monitoring

– Over- or undercurrent monitoring CM-SRS and CM-SRS.M – Phase failure CM-PBE

– Over- and undercurrent monitoring CM-SFS – Over- and undervoltage CM-PVE

– Over- or undervoltage monitoring CM-ESS and CM-ESS.M – Phase sequence and phase failure CM-PFE and CM-PFS
2 – Over- and undervoltage monitoring CM-EFS
– Phase sequence and phase failure, over- and undervoltage

CM-PSS.xx and CM-PVS.xx

– Phase sequence and phase failure, unbalance CM-PAS.xx

– Phase sequence and phase failure, unbalance, over- and

undervoltage CM-MPS.xx and CM-MPN.xx

– Over- and undervoltage, over- and underfrequency CM-UFS.1

Current monitoring v
– Monitoring of motor current consumption
– Monitoring of lighting installations and heating circuits Three-phase voltage monitoring
– Monitoring of hoisting gear and transportation equipment – Voltage monitoring of mobile three-phase equipment
– Protection of personnel and installations against phase
overload
– Monitoring of locking devices, electromechanical brake reversal
– Monitoring of the supply voltage to machines and installa-
gear and locked rotor
tions
Voltage monitoring – Protection of equipment against damage caused by un-
– Speed monitoring of DC motors
– Monitoring of battery voltages and other supply networks stable supply voltage
– Monitoring of upper and lower voltage threshold values – Switching to emergency or auxiliary supply
– Protection of motors against damage caused by unbal-
Insulation monitoring
– For electrically isolated AC systems: CM-IWS.2 anced phase voltages and phase loss
– For electrically isolated AC, DC and mixed AC/DC systems: – Automatic connection & disconnection of decentralised

CM-IWS.1, CM-IWN.1 and especially for solar applications: power stations to the grid
ͨ 500 μF: CM-IWN.4
ͨ 1000 μF: CM.IWN.5 Grid feeding monitoring relays
ͨ 2000 μF: CM-IWN.6
The CM-UFx range monitors all voltage and frequency pa-
– Monitoring of electrically isolated supply mains for insula-
tion resistance failure rameters in a grid and ensures the safe feeding of decentral

– Detection of initial faults produced eletrical energy into the grid.
– Protection against earth faults
– Monitoring of the voltage with up to 2 thresholds for over-
Motor load monitoring
CM-LWN monitoring relays load states of single- and three- and undervoltage L1
phase asynchronous motors. – Monitoring of the frequency with up to 2
L2
thresholds for over- and underfrequency L3

N

– Optional ROCOF (rate of change of frequency) V,f

and vector shift

– Acc. to national grid feeding standards such

as CEI 0-21, VDE AR-N 4105 etc.

Thermistor motor protection
CM-MSS provide full protection of motors with integrated
PTC resistor sensors.

– Detection of V-belt breaking – Protection of motors against thermal over-
– Motor protection against overload load, e. g. caused by insufficient cooling,
– Monitoring of filters for clogging heavy load starting conditions, undersized
– Protection of pumps against dry running motors, etc.
– Detection of high pressure in conduit systems
– Monitoring for dulling blades in sawing and cutting machines ϑ

2/5 ABB | Catalog Electronic Products and Relays 2015 | 2CDC 110 004 C0210