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The DCM300E clamp meter from portable test equipment expert Megger is said to provide a fast and convenient way of measuring earth leakage current in low-voltage electrical installations. 

As well as being a useful aid for confirming installation safety, the instrument can also be used for solving nuisance-tripping problems with residual current devices (RCDs) and residual current circuit breakers (RCBOs).

While its primary function is to measure earth leakage currents as small as a fraction of a milliamp, Megger’s DCM300E also has high current ranges up to 300A. This means that it is a useful option for making rapid and accurate current measurements in AC circuits of all kinds.

The instrument’s clamp construction means that it is not necessary to make any electrical connection to the circuit under test, greatly increasing safety and convenience for the user.

Safety is further enhanced by the incorporation of a tactile barrier that significantly reduces the possibility of a short circuit between live conductors, and also protects the operator against electric shock.

Key product features and specifications

  • Current ranges: 30mA, 300mA, 30A and 300A
  • Minimum resolution of 0.0 mA on the 
30mA range
  • Meets the latest EN61010-2-32 safety design standards and EMC requirements
  • Meets CAT III safety requirements for voltages up to 500 V phase-to-phase and 300 V phase-to-eart
  • Weighs 125g
  • Capacity of approximately 40mm

Megger

For 100 year Megger has been committed to making electrical measurement of low and high voltage systems more accurate and simple-to-use. It has a reputation for tough, reliable, high quality equipment.

For 100 year Megger has been committed to making electrical measurement of low and high voltage systems more accurate and simple-to-use. It has a reputation for tough, reliable, high quality equipment.

Megger offers equipment for testing breakers, protection relays and CTs, as well as transformers, earthing systems and standby batteries to the electrical generation, transmission and distribution industries. In the LV sector Megger is the market leader for the testing of building wiring to the 17th Edition of the Wiring Regulations and portable appliances.

They have recently acquired a range of water leak detectors

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