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Modular Switchgear Monitoring (MSM)

Condition monitoring for high-voltage switchgear

Modular Switchgear Monitoring (MSM) is used to supervise, manage and analyze performance of all type of high-voltage switchgear in new installations as well as a retrofit solution in existing high-voltage assets. The system operates independently of existing control and protection devices and can be installed in new substations or retrofitted in existing installations. By continuously monitoring critical parameters, MSM provides the base layer for a predictive maintenance strategy for the installation.The system is compliant with IEC 61850 and DNP 3.0 and it is provided with a web interface where all monitored data are accessible.

Applications

Based on the monitoring application, MSM is offered in 2 versions with additional options:

  • MSM-I is designed for SF6 and gas monitoring allowing early detection and prevention of critical gas leakages in high-voltage switchgear, enabling to reduce gas emissions 
  • MSM-II enables circuit-breaker monitoring in addition to gas monitoring, for improved operational reliability and performance of the circuit-breakers
  • MSM is now available with options that enable humidity monitoring, heater monitoring, disconnector and earthing switch monitoring
  • MSM is designed to be compatible with the new EconiQTM solutions

Why Hitachi Energy?
 

  • Improved reliability with reduction in unplanned downtime
  • Optimized predictive and proactive maintenance by early warnings
  • Provides adequate time for maintenance planning with low chances of failure
  • Greater diagnostic capability in case of failure through the recorded data, reducing time to repair
  • Improved environmental/ regulatory compliance with reduced SF6 leakages
  • Software independent visualization

Product overview

Category Features MSM-I  MSM-II  Options
Dielectric  Gas pressure / temperature SF6 or Gas mixtures SF6 or Gas mixtures -
  Gas leak rate SF6 or Gas mixtures SF6 or Gas mixtures -
 

SF6 moisture

- - For MSM-I/-II
Mechanical Travel curve - Calculated -
  Mechanism timing - Yes -
  Contact speed - Calculated -
Wear Coil current analysis - Yes -
  Operations counter  - Yes -
  Contact wear - Yes -
Accessories Heater operation - - For MSM-II
  Motor/ pump run-time - Yes -
  Motor/ pump (unforced) starts - Yes -
  Motor current (curve/ peak) - Yes -
  DS / ES / DES monitoring - - For MSM-II
Interface Webserver Yes Yes -
  IEC61850/DNP3 interface Yes Yes -
  Device self-supervision Yes Yes -

Get to know more

MSM System 
Parameter Specification
Number of modules per MSM Stack (for SF6 monitoring) Up to 10
Operating temperature LCD (clearly legible) -5°C to +50°C
Protection class IP 20
Input voltage range of power supply 80 to 370 VDC, 85 to 277 VAC 
Nominal supply voltage 24 VDC
Isolation voltage max. 2 kVAC
Operating temperature - 40°C up to 70°C
LED Device status indication
Firmware release 2.2
Control Communication Module (CCM) 
Dimensions W / H / D 79 x 99 x 113 mm
Nominal supply voltage 24 VDC, +/-10%
Module power consumption < 6 W
Isolation voltage Max. 2 kVAC
Communication Ethernet interface RJ45, 10/100 Mbit/s
Communication protocols IEC 61850-8-1 (MMS), DNP3.0 ,SNTP, SFTP, HTTP 
Supervision, Binary Output 1 Alarm signal
Supervision, Binary Output 2 Watchdog
Analog Input Module (AIM) 
Dimensions W / H / D 56 x 99 x 113 mm
Module power consumption < 3 W
Integrated power supply for sensors 12 VDC , 200 mA
Isolation voltage Max. 2 kVAC
Analog inputs (configurable) 8 channels ,0 to 20 mA/ 4 to 20 mA
Accuracy ± 1% full scale
Binary Input Module (BIM)  
Dimensions W / H / D 56 × 99 × 113 mm
Module power consumption < 0.1 W
Binary inputs (configurable) 6 channels 24 up to 250 VDC / 48 up to 230 VAC 
Product safety IEC 60255-27
Electromagnetic compatibility IEC 60255-26, Zone A
Isolation voltage Max. 2 kVAC
Isolation resistance  100 MΩ
Serial Interface Module (SIM)  
Dimensions W / H / D 34 × 99 × 113 mm
Module power consumption < 3 W
Isolation voltage 2kVAC
Interface EIA-485
Bus protocol Modbus
Fast Analog Input Module (FAIM) 
Dimensions W / H / D 56 x 99 x 113 mm
Analog inputs 4 x ±5 V / 0 to 20 mA
Power outputs 24 VDC, ±15 VDC, ±5 VDC
Module power consumption < 15 W
Product safety IEC 60255-27
Electromagnetic compatibility IEC 60255-26, Zone A
Operating temperature - 40°C up to + 70°C
Isolation voltage Max. 2 kVAC
Isolation resistance  100 MΩ

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