The Model 585B is designed as a low cost, fully automatic single phase meter tester. A microprocessor is used in this tester to conduct the test sequence and calculate results. Hard copy of the tests can be printed out automatically when requested. The test results can also be downloaded via an optional RS232 port to a host computer. On the front panel of the Model 585B a back-lit LCD display shows test results and other information. Test data is entered through the keyboard. The tester is very compact and easily mounts on a bench or table top.

The testing software is designed so that new meters can be tested and accepted if within limits, or refurbished meters can be both tested and adjusted. This is a simple to operate, user friendly meter tester easily understood by anyone.

The Model 585B offers a better alternative to the traditional batch testing of single phase meters in many ( perhaps not all ) cases. This is because it is low in initial cost, takes up very little room which saves on expensive workshop space, and is more user friendly for the operator. The operator can sit in front of the tester and conduct all testing while in the sitting position.

Many utilities will find it better to buy two Model 585Bs, which is less expensive than one ten meter batch board, and have a spare unit to cater for peak workloads or to take over when the first unit needs servicing.

The Model 679 is a fully digital meter tester, with a microprocessor to carry out all measurements and also calculate meter errors to 0.1% or 0.05% accuracy.

The optional Model 3028 clipon CTs have basic phase and ratio accuracy of 0.2%, which allows accurate testing of direct connected polyphase and single phase meters without disconnecting the meter wiring or interrupting supply to the customer.

The Model 679 has nominal 10A inputs for testing CT operated meters. Because it needs only low current 10A inputs ( inputs up to 118A being taken care of with the clipon) the Model 679 is small, light and modestly priced with a large back-lit LCD display which has 16 lines of text.

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The Model 689 is a fully digital meter tester using a microprocessor to carry out all measurements and also calculate meter errors to 0.1% or 0.05% accuracy.

The Model 689 has a 3 phase switch mode current source. For testing direct connected meters to 100A there are 6 large 6mm sockets on the front panel. Testing C.T. meters to 10A is done using the multi pin “CURRENT” socket on the front panel.

The optional Model 3028 clipon C.T.s have basic phase and ratio accuracy of 0.2%, which allows accurate testing of direct connected polyphase and single phase meters without disconnecting the meter wiring or interrupting supply to the customer.

Up to 100 test records can be stored for later downloading to a PC. The chassis of the 689 is fitted in a rugged transit case using rubber mounts to protect it against rough handling in the field. There are carry handles at both ends of the case.

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The Model 470A is a moderately priced 3 phase reference standard. It is packaged in a 19” style bench-top case with all connections on the front panel for use in meter test benches.

The software enables meter testing with all the common type of real and reactive kWh meters, both disc and electronic types.

The LCD readout shows all the parameters in the test circuit as well as meter test results.

In situations where high revenue is measured by electronic kWh meters it is important to be 100% sure of the metering accuracy. Our Model 809F is an automatic meter verification panel which continually tests 5 or more meters in a substation. It will cycle through each meter and test its output pulse accuracy for both real and reactive power.

Options available on this system are:
- Admittance measurement of up to 15 metering CTs during the test cycle.
- Up to 15 CT burden measurements.
- Up to 15 PT burden measurements
- Vdrop measurements between PT secondary terminals and the meter.
- Additional Check Meter monitoring and comparison.
- Switchable to Supplementary / Backup PT

All the test results are stored and can be downloaded to the utility IT system via modem or SCADA link. Problems in any part of the metering system can quickly be seen and steps taken to protect revenue.