Switchgear and Cable Diagnostic Monitor - SCM

Brochure and Specifications

• 15 Channel Continuous Partial Discharge Monitor (PDM)
• Up to 90 partial discharge channles avaiable with one system by adding addition PDM's
• USB, Ethernet and RS-485 ModBus communication Interfaces
• Accept auxiliary inputs such as temperatures, humidity
• Outputs include 4 dry contacts and a 4 - 20 ma signal.
• Highly configurable

The SCM is a microprocessor-based device that continuously monitors the insulation system for partial discharge activity as well as other parameters such as temperture and humidity. Application for the SCM includes switchgear, bus duct and cable systems. The basic standalone unit shown in the picture consists of three modules (from the left to the right): Power Supply, main CPU module and a 15-channel partial discharge module.

The basic unit may be extended with additional modules allowing for more economical or accurate way of monitoring multiple objects. The SCM can have up to six PD modules allowing monitoring up to 90 channels (within allowable signal cable distance) with one monitor. These multiple cnahhels can be of mixed signals, such as RFCTs on cable shield grounds and coupling capcitors located in switchgear.