ABB CM-ESS.1S 1SVR730830R0300 Voltage Monitoring Relay

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• 1. Product Overview

  The ABB CM-ESS.1S (1SVR730830R0300) is a voltage monitoring relay designed to monitor phase voltages, voltage deviations, and phase sequence in power systems. It provides an alarm or triggers control actions when voltage abnormalities (overvoltage, undervoltage, phase loss, or incorrect phase sequence) occur, protecting motors and critical equipment from voltage-related damage.

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  2. Technical Specifications

  Parameter	Description
  Model	CM-ESS.1S / 1SVR730830R0300
  Type	Voltage Monitoring Relay
  Monitored Voltage	3-phase AC 380–480 V
  Operating Range	±10% ~ ±20% (adjustable, depending on version)
  Monitoring Functions	Undervoltage, overvoltage, phase loss, phase sequence
  Output	1 relay output (SPST/NO or SPDT, configurable)
  Time Delay	0.1–10 s adjustable
  Supply Voltage	24–240 V AC/DC (depending on version)
  Mounting	DIN rail
  Operating Temperature	-20℃ to +60℃
  Protection	IP20
  Housing Material	Flame-retardant plastic
  Standards	IEC 60947-5-1 / EN 60255

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  3. Key Advantages & Features

  1. Accurate Voltage Monitoring

     • Real-time monitoring of network voltage ensures safe operation of motors and equipment.

  2. Multi-Function Protection

     • Provides overvoltage, undervoltage, phase loss, and phase sequence protection.

  3. Adjustable Parameters

     • Delay time, operating thresholds, and alarm outputs are configurable for various applications.

  4. Easy Installation

     • DIN rail mounting allows easy integration into control panels.

  5. High Reliability

     • Industrial-grade design suitable for long-term operation in harsh environments.

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  4. Typical Applications

  • Motor protection systems

  • Industrial automation control panels

  • Distribution system monitoring and alarms

  • Variable frequency drive, pump, and fan protection

  • Electrical equipment monitoring in factories, buildings, and infrastructure

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  5. Usage Precautions

   

  • Installation: Must be installed by qualified electricians; ensure correct wiring and supply voltage.

  • Adjustment: Set appropriate operating thresholds and delay times according to load and system voltage.

  • Environmental Conditions: Avoid high temperature, humidity, dust, and corrosive gases.

  • Regular Inspection: Ensure relay output operates correctly and connections are secure.

  • Alarm Response: Ensure alarm or control outputs are correctly connected to the system to prevent false trips.

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The structure and details of the product：

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