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參數(shù)資料
| 型號： | BMM2500 |
| 英文描述： | INSULATION M/METER WITH MEM |
| 中文描述： | 絕緣米/培養(yǎng)基儀表 |
| 文件頁數(shù)： | 2/4頁 |
| 文件大?。?/td> | 52K |
| 代理商： | BMM2500 |
APPLICATIONS
Electrical Contractors
The BMM2500 series insulation multimeters has a wide variety of applications and is ideal 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.
The BMM2500 series Insulation Multimeters are designed to provide the electrical contractor with the ultimate tool for
testing/commissioning fixed installations. The on-board storage facilities enable each test result to be assigned to particular
distribution board and circuit references. Data may be later recalled to the display for manual completion of certificates of test or for
maximum performance downloaded to certification software such as AVO PowerSuite for Windows or NICE
one
to create a seamless
recording system with the tracability necessary for safety critical applications. The inclusion of an intelligent 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 1000V 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 500V. The 250V
insulation range is necessary where low voltage circuits supplied by an isolating transformer are tested whilst the 1000V range is
used for circuits with a nominal voltage exceeding 500V and below 1000V. An additional leakage facility allows any insulation
measurement to be displayed in terms of microampere leakage currents.
The instruments have a 200mA continuity range which is ideal for testing the continuity of ring final circuit conductors, primary
bonding of services and of supplementary bonding conductors. The zero offset adjustment allows the resistance of the test leads to
be ignored so the measurement shown is due to the conductors under test only.
The feature set of the BMM2500 series extends to include measurement ranges for voltage, current, resistance enabling one
instrument to be used where normally a separate multimeter would be called for.
To aid operation in awkward situations where the instrument cannot be held in one hand the
MEGGER SP1
switched probe,
(supplied as standard), may be connected enabling control of the instrument test button directly from the probe.
In addition to the electrical features above the rugged design of the BMM2500 range ensures that they can withstand the everyday
handling, transportation and storage with other tools in the contractors toolbag and the BMM2500 is supplied with a three year
manufacturer’s warranty.
Servicing and HVAC
The BMM2500 series are ideal tools for the service industry since they offer a comprehensive range of features
addressing the requirements of the service engineer in a single unit.
The insulation ranges are useful for establishing the integrity of the internal parts such as motors, timers and
transformers whilst the continuity range can verify the correct earth bonding of the case metalwork and checking the
operation of switches etc.
The multimeter functions of Voltage, Current and Resistance find a multitude of uses in the measurement of component
parts within consumer appliances such as the verification of correct mains supplies timer switching characteristics and
component level measurements on control PCB’s.
The unique mV transducer input ranges enable the BMM2500 series to interface to a vast range of transducers for
measurement of the various parameters necessary during servicing and in the commissioning and verification of HVAC
systems. Temperature measurement is one of the most important additions for the service industry enabling the correct
operation of items such as oven thermostats or the measurement of heated air temperature and humidity to be made.
To further assist in servicing situations higher currents, (up to 10A ac), may be measured by connecting the optional
MEGGER MCC10 current clamp. This enables measurements of appliance element/motor currents etc to be made
quickly and safety without interrupting the conductors.
Data Logging Applications
The advanced data logging facilities of the BMM2500 series enable a log of measured value at regular presettable
intervals for any of the measured parameters e.g. , voltage, capacitance, insulation, resistance. etc In the case of
insulation resistance the logging facility enables calculations of Dielectric Absorption Ratios and polarisation Index.
The polarisation index is defined as the ratio between the insulation resistance values after 1 minute and 10 minutes.
This calculation is often useful for determining insulation quality without the need for temperature compensation or
necessary referral to historic test data.
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