The MEGGER® BMM503 Insulation and Continuity tester provides all the necessary features for electrical installation testing and servicing needs. The instrument is microprocessor controlled to ensure outstanding performance with ease of use. For ultimate reliability, the BMM503 is waterproof and dustproof to IP54 and is supplied with a 3-year warranty.

The BMM500 series has been carefully designed to maximise features which are of real benefit to the electrical contractor or service engineer competing for business in today’s market.

With increased pressure of time to complete jobs it is inevitable that whilst performing tests on an electrical system mistakes will occasionally be made exposing the user to danger or under certain circumstances damaging the instrument. The BMM500 series incorporates Megger’s Intelligent Safety System which has been designed to ensure that such mistakes don’t become disasters.

The BMM500 series insulation continuity testers has a wide variety of applications for testing electrical installations to both the British and the International Wiring Regulations. Each instrument conforms to the requirements of Table 71A in BS7671 and to VDE 0413 parts 1 and 4, HD 384, IEC 364 and EN 61557. In addition the range meets the requirements of BSEN 61010-1 for safe connection to a 440V Installation Category III supply (300 V Phase to Earth).

The BMM500 series is designed to provide the electrical contractor with a highly functional tool for testing/commissioning fixed installations. The inclusion of a power saving backlight ensures that the display can be clearly seen even where the distribution board is located in a dark cupboard, but without ruining battery life. Three insulation test voltages of 250,500 and 1000 V are provided to ensure that the correct test voltage for the installation under test is always available. The 500 V range is suitable for the majority of testing on circuits with a nominal voltage up to 500 V. The 250 V insulation range is necessary where low voltage circuits supplied by an isolating transformer are tested whilst the 1000 V range is used for circuits with a nominal voltage exceeding 500 V and below 1000 V.