KJ DYNATECH

Diagnostic & Test Equipments

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DTM

Features & Benefits

• Provides indication of the bushing power factor and capacitance while transmitting the high frequency partial discharge signal to support a second level diagnostic.

• DTM's correlation of temperature and humidity with the measured condition provides better and earlier indication of bushing problems.

• The DTM is designed for harsh ambient conditions including - 40˚C to 70˚C (- 40˚F to 158˚F), without the need of additional heating or cooling.

• A full range of advanced noise cancellation filters provide the ability to identify and eliminate external noise.

• The DTM with an iBridge, IED Networking Solution option, offers secure and reliable communications as an affordable alternative to installing new communication cable or fiber.

Design Advantages

The modular design allows selection of the appropriate scope of monitoring for any distribution, transmission or generation application. Systems can be provided with the partial discharge capabilities built-in or with provisions to support periodic on-line partial discharge testing.

Partial discharge monitoring complements the bushing and winding hot spot monitoring features of the DTM and the monitoring capabilities of a DGA device by identifying the location of the problem (identifying which phase and which winding).

On-line partial discharge monitoring will respond faster than dissolved gas analysis allowing correlation of the problem activity with various operating conditions. In all cases, the DTM's partial discharge monitoring can be used to provide a second level diagnostic confirmation of problems without taking an outage.

Case Study

Specifications

Power Requirement	100-240VAC(50-69Hz), 125-250VDC
Internal Memory	8MB
Temperature Range	-40˚C ~ 70˚C /-40˚F ~ 158˚F
User Interface	Status LEDs and PC. DTM-W model includes a Temperature Display