MV Switchgears

Temperature Monitoring Cabinet (TMC)

Features

  • Temperature control and monitoring (from 240 to 960 points)
  • Partial discharge monitoring and control
  • Circuit breaker control
  • Position monitoring of all switching devices
  • Monitoring of the mechanical and electrical life of devices
  • Insulation condition monitoring (monitoring of SF6 gas leakage, pressure, temperature, and density when used with GIS)
  • Monitoring of general switchgear alarm parameters (fire alarm, security alarm, ventilation, transformer temperature, room temperature)
  • Data transmission to cloud services
  • Storage and viewing of switchgear documentation in digital format (single-line diagrams, secondary circuit diagrams, data sheets, operating manuals, and technical instructions for installed equipment, etc.)
Application
A universal solution for all power facility configurations
Switchgears 7.2(12), 24, 40.5 kV with air, combined, solid and gas insulation
Low voltage switchgears and cabinets up to 1000V AC and DC
Power transformers (oil-immersed and dry-type)
Busducts up to 1000V and conductor rails 7.2(12), 24, 40.5 kV
Cabinet Composition
  • WTMS 240-400 wireless temperature monitoring system (from 1 to 4 sets);
  • Macon M-A200-CS PLC;
  • GSM modem;
  • HMI panel based on an LCD touchscreen.
  • Optional connections:
  • Partial discharge indicator with voltage monitoring, short-circuit current monitoring and cable temperature monitoring functions PDI-01NCT;
  • Digital SF6 gas parameter monitoring sensor;
  • Alarm systems (fire, security, ventilation, transformer temperature, room temperature).
Equipment Layout and Dimensions

  • Cabinet dimensions:

    400х600х250

  • Weight:

    50 kg
HMI Panel Functional Features

  • Active mimic diagram of the power facility

  • Display of the position of all switching devices

  • Switching devices control (control of incoming MV switchgears 7.2(12, 24, 40.5) kV; incoming and sectional circuit breakers of LV switchgears)

  • Display of contact connection temperatures

  • Display of power transformer temperatures

  • Display of insulation condition

  • Display of alarms

  • Data logging and storage

  • Storage and viewing of switchgear documentation in digital format (single-line diagrams, secondary circuit diagrams, data sheets, operating manuals, and technical instructions for installed equipment, etc.)

WTMS 240-400 Wireless Temperature Monitoring System
  • Wireless sensors;
  • Up to 240 sensors connected to 1 WTMS terminal;
  • Battery-less sensors (400 series);
  • Mounting on any type of busbar or surface;
  • Operating range up to 150 m;
  • Modbus-RTU communication protocol.

  • WTMS 240 TERMINAL

  • TEMPERATURE SENSORS

    400 SERIES
Technical specifications of 400 series wireless sensors (no additional power required):
  • Data transmission frequency: 470 MHz;
  • Communication distance between sensor and receiver: 150 m;
  • Measurement sampling rate: 15 sec;
  • Transmission rate: 15 sec;
  • Power supply: current circuits, actuation at current > 8 A;
  • Measured temperature range: -50°C ~ +125°C;
  • Measurement accuracy: ±1°C.

Installation example of 400 series wireless sensors in 7.2(12), 24, 40.5 kV switchgear panels / cubicles and power transformers

Photo by Jacob
Photo by Kolya
Photo by Oliver
Photo by Leo
Photo by Tiana

Installation example of 400 series wireless sensors in LV switchgears up to 1000V

Predictive Protection and Automation for Transformer Substations (TS)
Advantages of the TS predictive protection and automation system:
  • Triggers at an early stage when an abnormal situation occurs in the equipment;
  • Independent of RPA (Relay Protection and Automation) settings;
  • Can operate without RPA devices or in conjunction with RPA devices;
  • Prevents equipment damage (MV switchgears, LV switchgears, power transformers);
  • Flexible configuration.
Advantages of applying temperature monitoring
Personnel safety
creating a safe working environment
Protection against equipment damage
accident prevention
Reduction in operating costs
50-80%
Condition monitoring
ensuring transparency and stability of the network infrastructure