Megger INGVAR, Руководство пользователя

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BH0654BE ZP-BH05E 5
Rules of thumb ......................................................... 46
8 Application examples ......................... 48
8.1 Testing a low-voltage circuit breaker...........48
Measuring the tripping limit (normal generation) ....... 48
Measuring the tripping time ...................................... 48
Instantaneous trip unit measurement ........................ 48
Measure the instantaneous trip time ......................... 49
8.2 Testing the ratio of a current transformer ...49
Example .................................................................... 49
8.3 Measuring the polarity of a current trans-
former .....................................................50
8.4 Testing a direct acting automatic recloser ...51
Time test ................................................................... 51
8.5 Testing a sectionalizer ................................52
9 Troubleshooting .................................. 54
General ..................................................................... 54
Measurement errors .................................................. 54
10 Calibration ......................................... 56
10.1 General ....................................................56
10.2 Calibration of offset .................................56
10.3 Calibration of scale factor, ammeter 1 ......57
Scale factor, range LOW ............................................ 57
Scale factor, range HIGH ........................................... 57
10.4 Scale factor for the I/30-function ..............57
10.5 Calibration of scale factor, ammeter 2 ......58
Scale factor, range 0 – 2 A ........................................ 58
Scale factor, range 0 – 20 A ...................................... 58
10.6 Calibration of scale factor, voltmeter ........58
Scale factor, range 0 – 0.2 V...................................... 58
Scale factor, ranges 0 – 2 V, 0 – 20 V and 0 – 200 V .. 58
10.7 Resetting to preset (standardized) calibra-
tion values ...............................................59
Performing a reset ..................................................... 59
11 Specifications .................................... 60
Extended specifications ....................................61
Stop input ................................................................. 61
Appendix 1 ............................................. 62
A1.1 Transferring test data to a PC or a printer 62
A1.2 Setting up the connection .......................62
How to connect via Win XP hyper terminal ......63
How to connect via Win 2000 Hyper Terminal ..64
A1.3 Transfers in ”NORMAL USE” ....................65
Example of transfered data: ...................................... 65
A1.4 Transfers in applications ”TEST RECLOSER”
and ”SECTIONALIZER” ............................66
Example of transferred data: ..................................... 66
How to connect via Win 7 Hyper Terminal ........66
Index ....................................................... 68