METREL MI 2893 User Manual

MI 2893 / MI 2892 / MI 2885 Table of contents
6
6.2.2 Phase Voltages .................................................................................................................... 216
6.2.3 Line voltages ........................................................................................................................ 216
6.2.4 Current ................................................................................................................................ 218
6.2.5 Frequency ............................................................................................................................ 221
6.2.6 Flickers ................................................................................................................................. 221
6.2.7 Transients ............................................................................................................................ 221
6.2.8 Combined power ................................................................................................................. 222
6.2.9 Fundamental power ............................................................................................................ 222
6.2.10 Nonfundamental power ................................................................................................. 223
6.2.11 Power factor (PF, PFe, PFv, PFa) ..................................................................................... 224
6.2.12 Displacement factor (DPF) or Cos φ) .............................................................................. 224
6.2.13 Energy ............................................................................................................................. 224
6.2.14 Voltage harmonics and THD ........................................................................................... 225
6.2.15 Current harmonics, THD and k-factor ............................................................................. 225
6.2.16 Voltage interharmonics .................................................................................................. 226
6.2.17 Current interharmonics .................................................................................................. 226
6.2.18 Signalling ......................................................................................................................... 227
6.2.19 Unbalance ....................................................................................................................... 227
6.2.20 Overdeviation and Underdeviation ................................................................................ 227
6.2.21 Time and duration uncertainty ....................................................................................... 227
6.2.22 Temperature probe ........................................................................................................ 227
6.2.23 Phase angle ..................................................................................................................... 228
6.2.24 400Hz systems specification ........................................................................................... 228
6.2.25 VFD (Variable frequency drive) systems specification .................................................... 228
6.2.26 Differences in specification between 400Hz, VFD and 50/60 Hz systems ...................... 228
6.3 Recorders .............................................................................................................................. 229
6.3.1 General recorder ................................................................................................................. 229
6.3.2 Waveform/inrush recorder ................................................................................................. 230
6.3.3 Waveform snapshot ............................................................................................................ 230
6.3.4 Transient recorder............................................................................................................... 230
6.4 Standards compliance ............................................................................................................ 232
6.4.1 Compliance to the IEC 61557-12 ......................................................................................... 232
6.4.2 Compliance to the to the IEC 61000-4-30 ........................................................................... 233
7 Maintenance ......................................................................................................................... 234
7.1 Inserting batteries into the instrument ................................................................................... 234
7.2 Batteries ............................................................................................................................... 235
7.3 Firmware upgrade ................................................................................................................. 236
7.3.1 Requirements ...................................................................................................................... 236
7.3.2 Upgrade procedure ............................................................................................................. 237
7.4 Power supply considerations ................................................................................................. 240
7.5 Cleaning ................................................................................................................................ 240
7.6 Periodic calibration ................................................................................................................ 241
7.7 Service .................................................................................................................................. 241
7.8 Troubleshooting .................................................................................................................... 241
8 Version of document ............................................................................................................. 241
List of tables:

METREL MI 2893 Specifications

General

Brand	METREL
Model	MI 2893
Category	Measuring Instruments
Language	English