Megger-RCDT300 series

Megger-RCDT300 series

Standard test ranges

• The RCDT300 series can perform 1/2I, 1xI and 5xI tests on RCDs rated at 30 mA, 100 mA, 300 mA and 500 mA on general and selective (time delayed) RCDs. The RCDT320/ 330 can also test RCDs rated at 10 mA and 1000 mA. All units offer Type A.
• Test times for normal and Selective RCDs are:

Normal Selective
1/2I        2s        2s
I       300ms    2s
5I      40ms      150ms

• 5I tests are available on RCDs rated up to 100 mA.

Polarity

All RCDs can be tested at 0º or 180º

Selective RCDs (Type S)

Selective breakers have a time delay in tripping. When selected, trip test times are extended and a 30s delay is allowed between the measurement of the fault voltage and the application of the test current.

Touch voltage

Touch voltage is measured at the start of the RCD test. If enabled it is displayed on the analogue arc on completion of testing.
Touch voltage inhibit is selectable from 25 V or 50 V.

Tough:-

• Designed to take the bashing that testers receive on site, the Megger RCDT testers are rubber armoured.
• The rigid display cover folds right out of the way during testing and locks down to protect the display when it is finished.

Simple to use:-

• No buried functions mean it is obvious how to use the Megger RCDT.
• Colour coded ranges help test range selection, reducing test times and fault location.
• A user guide in the lid provides all the basic information.

Hands free use:–

•  It hangs comfortably around the neck for hands-free use because the instrument is carefully balanced.

Type A (pulsed DC sensitive) RCD’s

• Can be tested at 1/2I, 1xI and 5xI

Ramp testing (RCDT320/330)

• To measure the trip current of an RCD. Current level is slowly increased from 1/2I to 1I (+10%). When the RCD trips the trip current is displayed and held on the screen.
• Very useful diagnosing nuisance tripping of RCDs.