ABB CM Phase Monitoring Relays

ABB CM Phase Monitoring Relays Supplier and Exporter in India

ABB Phase Failure, Phase Sequence & Phase Unbalance Monitoring Relays

ABB CM phase monitoring relays are used to supervise three-phase electrical supplies and protect motors, pumps, compressors, machines and other equipment from incorrect phase conditions.

A missing phase, wrong phase sequence or excessive phase unbalance can cause motors to run incorrectly, overheat or fail. ABB CM relays continuously monitor the three-phase supply and change their output contact when an abnormal condition is detected. The output can be connected to a contactor, PLC, alarm or shutdown circuit.

The ABB CM range includes simple phase failure and phase sequence relays as well as multifunctional models that also monitor overvoltage, undervoltage, phase unbalance and neutral interruption.

For an ABB phase monitoring relay supplier in India, ABB phase failure relay, phase sequence relay, CM-PFS relay or CM-MPS three-phase monitoring relay, buyers can share the system voltage, required monitoring functions, model number and quantity for quotation.

ABB CM Phase Monitoring Relay Models

ABB CM-PFS Phase Failure & Phase Sequence Relay

The CM-PFS is a straightforward three-phase monitoring relay used for:

• Phase failure detection
• Incorrect phase sequence detection

A commonly specified version is:

CM-PFS – 1SVR430824R9300

• Measuring voltage: 3 × 200–500 V AC
• Phase failure monitoring
• Phase sequence monitoring

This type of relay is useful where the main requirement is to make sure all three phases are available and connected in the correct sequence before equipment is allowed to operate.

ABB CM-PSS Phase Monitoring Relays

The CM-PSS range adds voltage supervision to phase monitoring.

Models include:

• CM-PSS.31
• CM-PSS.41

These relays monitor:

• Phase sequence
• Phase failure
• Overvoltage
• Undervoltage

The overvoltage and undervoltage limits are fixed, making CM-PSS suitable for applications where adjustable voltage thresholds are not required.

ABB CM-PVS Phase & Voltage Monitoring Relays

CM-PVS provides similar phase monitoring but with adjustable overvoltage and undervoltage limits.

Main models:

• CM-PVS.31 – 3 × 160–300 V AC
• CM-PVS.41 – 3 × 300–500 V AC

Functions include:

• Phase failure
• Phase sequence
• Overvoltage
• Undervoltage
• Adjustable voltage limits

CM-PVS is a useful choice where the acceptable supply-voltage range needs to be set according to the machine or installation.

ABB CM-PAS Phase Unbalance Monitoring Relays

CM-PAS is designed for applications where phase unbalance is an important concern.

Models include:

• CM-PAS.31 – 3 × 160–300 V AC
• CM-PAS.41 – 3 × 300–500 V AC

The relay monitors:

• Phase failure
• Phase sequence
• Phase unbalance

The phase-unbalance threshold can be adjusted.

This makes CM-PAS useful for motors and rotating equipment where all three phase voltages need to remain reasonably balanced.

ABB CM-MPS Multifunctional Phase Monitoring Relays

The CM-MPS series combines several three-phase monitoring functions in one unit.

Models include:

• CM-MPS.11
• CM-MPS.21
• CM-MPS.31
• CM-MPS.41
• CM-MPS.23
• CM-MPS.43

Depending on the version, CM-MPS monitors:

• Phase failure
• Phase sequence
• Phase unbalance
• Overvoltage
• Undervoltage
• Neutral interruption on selected models

CM-MPS.11, CM-MPS.21 and CM-MPS.23 also provide interrupted-neutral monitoring.

These multifunctional models are suitable where several possible mains faults need to be supervised with one relay rather than installing separate devices.

ABB CM-MPN High Voltage Phase Monitoring Relays

ABB also offers CM-MPN models for higher three-phase voltage ranges.

Models include:

• CM-MPN.52 – 3 × 350–580 V AC
• CM-MPN.62 – 3 × 450–720 V AC
• CM-MPN.72 – 3 × 530–820 V AC

These relays are useful for higher-voltage industrial three-phase systems and include multifunctional mains-monitoring capabilities.

Technical Specifications

• Product family: ABB CM
• Product type: Three-phase monitoring relay
• Main series: CM-PFS, CM-PSS, CM-PVS, CM-PAS, CM-MPS and CM-MPN
• Phase failure monitoring: Available
• Phase sequence monitoring: Available
• Phase unbalance monitoring: Available on selected models
• Overvoltage monitoring: Available on CM-PSS, CM-PVS, CM-MPS and CM-MPN models
• Undervoltage monitoring: Available on selected models
• Neutral interruption monitoring: Available on selected CM-MPS models
• Measuring voltage: Model dependent
• Standard three-phase ranges: Up to 500 V AC on many CM-P models
• Higher voltage monitoring: Up to 820 V AC with CM-MPN
• Supply frequency: 50/60 Hz on standard models; wider frequency capability on selected versions
• Adjustable thresholds: Available depending on model
• Adjustable phase-unbalance level: Available on CM-PAS and CM-MPS
• Adjustable trip delay: Available on selected models
• Relay output contacts: Model dependent
• LED indication for operating and fault status
• Screw and push-in terminal versions available on applicable current models
• DIN rail mounting
• Compact control-panel construction

Features

• Phase failure detection
• Incorrect phase sequence detection
• Phase unbalance monitoring on selected models
• Overvoltage and undervoltage supervision
• Adjustable thresholds on multifunction models
• Neutral interruption monitoring on selected CM-MPS relays
• Wide range of three-phase operating voltages
• Models available for systems up to 820 V AC
• LED fault and relay status indication
• Adjustable operating delay on applicable versions
• Compact DIN rail mounting
• Screw and push-in terminal options
• Suitable for motors, pumps and industrial machinery
• Simple phase-monitoring models as well as multifunctional versions

ABB Phase Failure Monitoring Relay

Phase failure is a common problem in three-phase installations. If one phase is lost while a motor is running, the motor may continue operating on the remaining phases and draw excessive current.

An ABB phase failure monitoring relay detects the missing phase and changes its output contact so the control circuit can disconnect the equipment or generate an alarm.

The ABB CM-PFS is particularly suitable where phase loss and correct phase sequence are the main monitoring requirements.

Typical applications include:

• Three-phase motors
• Pumps
• Compressors
• Fans
• Conveyors
• HVAC equipment
• Industrial machines

ABB Phase Sequence Monitoring Relay

Correct phase sequence is important for equipment where the direction of rotation matters.

If two incoming phases are reversed, a three-phase motor may rotate in the opposite direction. In pumps, compressors, conveyors or lifting equipment, this can lead to incorrect or unsafe operation.

ABB CM phase sequence relays check the order of L1, L2 and L3 before allowing the connected equipment to operate.

This is useful for:

• Pumps
• Compressors
• Hoists
• Cranes
• Conveyor systems
• Mobile machinery
• HVAC compressors
• Industrial motors

ABB Phase Unbalance Monitoring Relay

Even when all three phases are present, the voltages may not be evenly balanced.

Excessive phase unbalance can lead to increased motor current and heating. ABB CM-PAS and multifunctional CM-MPS relays can monitor phase unbalance and provide an alarm or trip signal when the imbalance exceeds the selected level.

This makes them particularly useful for:

• Larger motors
• Pumps
• Compressors
• Process equipment
• Manufacturing machinery
• HVAC systems
• Material handling equipment

ABB CM-MPS Multifunctional Three-Phase Monitoring

For applications where more than phase failure needs to be checked, the CM-MPS range provides several monitoring functions in one relay.

Instead of using individual devices for phase sequence, unbalance and voltage monitoring, one CM-MPS relay can supervise several parameters of the incoming supply.

This is useful in control panels where space is limited or where the buyer wants broader three-phase mains protection from one monitoring relay.

Applications

ABB CM phase monitoring relays are commonly used in:

• Three-phase motor control panels
• MCC panels
• Pump control panels
• Compressor panels
• HVAC and chiller systems
• Conveyor systems
• Hoists and cranes
• Elevators and lifting equipment
• Industrial machinery
• Packaging machines
• Material handling equipment
• Process plants
• Water and wastewater plants
• Irrigation and pumping systems
• Fans and blowers
• Refrigeration equipment
• OEM machinery
• Generator auxiliary panels
• Building automation
• Electrical distribution panels
• Factory automation
• Mobile three-phase equipment
• Phase failure protection
• Phase sequence supervision
• Phase unbalance monitoring

Choosing the Correct ABB CM Phase Monitoring Relay

The correct model depends on what needs to be monitored.

For a basic phase failure and phase sequence requirement, CM-PFS may be sufficient.

Where voltage limits also need to be checked, CM-PSS or CM-PVS can be considered.

For phase-unbalance monitoring, CM-PAS provides a dedicated solution.

Where phase failure, sequence, voltage and unbalance all need to be supervised together, CM-MPS is the more suitable multifunctional range.

For quotation, buyers should provide:

• Three-phase system voltage
• Required monitoring functions
• Phase failure requirement
• Phase sequence requirement
• Phase unbalance requirement
• Over/undervoltage requirement
• Neutral monitoring requirement, if needed
• Existing ABB model number
• Quantity
• Destination country

Looking for ABB CM Phase Monitoring Relays?

We supply ABB CM phase monitoring relays for three-phase motors, pumps, compressors, industrial machinery, MCC panels, OEM equipment and export requirements.

Enquiries are welcome for ABB CM-PFS, CM-PSS.31, CM-PSS.41, CM-PVS.31, CM-PVS.41, CM-PAS.31, CM-PAS.41, CM-MPS and CM-MPN three-phase monitoring relays.

For an ABB phase monitoring relay supplier and exporter from India, ABB phase failure relay, phase sequence relay, phase unbalance relay, CM-PFS supplier or CM-MPS three-phase relay requirement, send the complete model, system voltage, quantity and destination country for quotation.