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Reference Manual

Power Analyzer EMM5

Rev. 11

2018-07

Connection diagrams

The EMM5 can be used in power systems with or without the neutral conductor. Below measurements in systems with

L1/L2/L3 and N (PEN) are called four-wire measurement. Measurements in systems without N are called three-wire

measurement.

5.1

3-phase measurement with neutral conductor and four current transformers

(four-wire measurement)

Содержание EMM5

Страница 1: ...nual Power Analyzer EMM5 Rev 11 2018 07 Beluk GmbH Taubenstrasse 1 86956 Schongau Germany Tel 49 0 8861 2332 0 Fax 49 0 8861 2332 22 E Mail blr beluk de Web http www beluk de Reference Manual POWER AN...

Страница 2: ...updates 14 12 04 CE 03 features of new software V1 05 18 03 05 ATh 04 features of new software V1 06 08 12 05 ATh 05 features of new software V1 07 connection diagrams added 28 02 06 ATh 06 features...

Страница 3: ...3 phase measurement with neutral conductor and four current transformers four wire measurement 19 5 2 3 phase measurement without neutral conductor with three current and three voltage transformers t...

Страница 4: ...erformed on the input data from all channels 3 voltage channels 4 current channels This provides information about the harmonic contents which distort the sine waveforms of currents and voltages The f...

Страница 5: ...o small or even disconnected the device will not be able to do any measurements This mechanism is also used to provide the frequency reading The data collection circuitry for the voltage channels uses...

Страница 6: ...hese further calculations are possible THD U THD for each voltage channel from the harmonics 1 62 THD I THD for each current channel from the harmonics 1 62 Pth Ith Exponentially damped values for cur...

Страница 7: ...alarms Each of them continuously compares one of the measured values to an assigned limit and if necessary triggers the alarm Each of the alarms provides the following features Alarm source can be an...

Страница 8: ...the reverse display bright number on dark ground shows an activated relay The message ALARM xx in the centre of the display shows the number of the active alarm The number appears instead of xx in thi...

Страница 9: ...ntrast set up menu in this case so an additional possibility to set the contrast is included in the introduction screen press one of the two keys in the middle repeatedly to change contrast If no chan...

Страница 10: ...lue becomes too big the display automatically switches the unit prefixes For example If the voltage exceeds 1000V the display switches to 1 00 kV In the top right corner of the display the status of a...

Страница 11: ...rmonic alarms should use the THD as source which contains information of all harmonics of one source in one single value 4 5 Work This submenu contains the work accumulators These accumulators count c...

Страница 12: ...ible settings the setup menu is divided into more submenus to provide easy and logical access to all the set up possibilities The available submenus are PARAMETER This menu provides the possibility to...

Страница 13: ...te it by pressing the key PT RATIO This sets up the device to work with a voltage measurement transformer Enter the transformer ratio The range is 1 4000 If no transformer is used and the EMM5 is dire...

Страница 14: ...are of reactive nature reactive power cp the display shows ind or cap for the trigger setting This has to be interpreted as more inductive than limit or more capacitive than limit LIMIT The limit val...

Страница 15: ...lose if P sum 20W relay 2 will close when P sum 20W This setting contains the dead zone of 20W The on delay of 1sec and off delay of 0 5 sec for both relays prohibits them from being closed at the sam...

Страница 16: ...lse outputs Select one pulse output with the and keys and after pushing the value can be adjusted The range is between 1 and 10000 pulses Mwh or Mvarh The adjusted value should be selected in the way...

Страница 17: ...ry For the DI can be adjusted if the synchronization is done via a positive edge HIGH or negative edge LOW When synchronization via the DI the time interval to be terminated since this time will be us...

Страница 18: ...torage cells full the recording starts again at memory cell one As additional information will be stored the values listed in the following table Page 1 Page 2 Page 3 Record 1 64 Indicates in which me...

Страница 19: ...wer systems with or without the neutral conductor Below measurements in systems with L1 L2 L3 and N PEN are called four wire measurement Measurements in systems without N are called three wire measure...

Страница 20: ...Rev 11 2018 07 20 5 2 3 phase measurement without neutral conductor with three current and three voltage transformers three wire measurement 5 3 3 phase measurement with two current and three voltage...

Страница 21: ...nalyzer EMM5 Rev 11 2018 07 21 5 4 3 phase measurement with two current transformers three wire measurement 5 5 3 phase measurement with three current transformers and measured neutral conductor curre...

Страница 22: ...ltage max 250V DC switching current max 100mA switching frequency max 4Hz tON 50ms tOFF 50ms Digital Input On request Fan control temperature measurement on rear side of device programming of relay ou...