TEST-330 Three Phase Relay Test Set

The TEST-330 is a three phase relay microcomputer test system. The manufacturer's homepage describes three phase current output and five phase voltage output for precise results, with distance protection, differential protection, overcurrent and overvoltage tests. The category page lists 5U and 3I output, DC 0 to 15A and 0 to 300V, and AC 0 to 90A and 0 to 260V.

A shop parameter table for the same model gives more detail: AC current 3 x 0 to 30A with a maximum parallel output of 0 to 90A, AC voltage 5 x 0 to 130V with line voltage to 260V, accuracy class better than plus or minus 0.1%, DC current minus 10 to 10A or 3 x 0 to plus or minus 10A, DC voltage 0 to 300V or 5 x 0 to plus or minus 130V, and frequency 0 to 1050Hz with superposed harmonic to the 21st. Dimensions are 360 x 195 x 375mm and weight 16.6kg, with operating temperature 0C to 45C. These shop-table figures are stated here as the shop listing's figures for this model.

Item and specification

How to select

The TEST-330 suits three-phase protection testing where distance and differential functions must be verified with several outputs at once. Check the relay types you must test against the test list: distance, differential, zero-sequence, setting group, state sequence, synchronization, oscillation, metering instrument and fault waveform reproduction are all listed for this model in the shop table.

Before payment, confirm the model, the output configuration, the accuracy class, the test programs included, the quantity, and the delivery terms. Ask for the current datasheet to be confirmed in writing before ordering. No price, minimum order or lead time figure is stated here; confirm each in writing with your inquiry.

Records and comparisons

Keep a record for every test this instrument performs. A useful record states the instrument model, the device under test, the test settings, the results, the date, and the person who ran the test. Records of that form can be checked months later, when a result is questioned or a device is retested after repair. A record that only says pass or fail cannot be checked, and a test that cannot be checked will eventually have to be repeated.

When comparing this model with a neighbouring model from the same family, compare the same items for both: the test functions, the ranges, the accuracy class, the display and output features, and the standards referenced. A comparison that uses one model's headline figures against another model's detailed figures is not a comparison. Ask for the current datasheet for each model under consideration, and compare datasheet against datasheet.

If the instrument will be used by more than one person, agree who owns the test records and where they are kept before the first test. Shared instruments with private records produce results that cannot be checked by anyone except the person who ran the test, which defeats the purpose of keeping records at all.

What to confirm before ordering

Before payment, confirm the model, the specification from the current datasheet, the quantity, the price, the lead time, and the delivery terms, in writing. Ask in your inquiry to confirm the payment terms, the trade terms, and the reply time you should expect, rather than assuming any of them. No price, minimum order or lead time figure is stated on this site.

Notes

No warranty period is stated on this page. One shop listing mentions an appearance patent for a TEST-330 host, but no patent number is given anywhere in the reference material, so no patent claim is made here.