VAMP 260 - Section 2

VAMP Ltd Power monitoring unit
Technical description
VAMP 260
VM260.EN004 Vamp 24h support phone : +358 (0)20 753 3264
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Table of Content
1. Introduction ............................................................................3
1.1. Application..........................................................................3
1.2. Main features ......................................................................3
2. Functions.................................................................................5
2.1. Principles of the numerical measuring technique.........5
2.2. Measurement functions.....................................................5
2.2.1. Fundamental frequency measurement...............5
2.2.2. Power calculations ..................................................6
2.2.3. Energy calculations .................................................8
2.2.4. Energy pulses ............................................................9
2.2.5. Harmonics .............................................................. 11
2.2.6. Total harmonic distortion (THD)........................... 12
2.2.7. RMS values ............................................................. 12
2.2.8. Voltage sags and swells....................................... 12
2.2.9. Voltage interruptions............................................ 14
2.2.10. Demand values..................................................... 15
2.2.11. DI total time counters........................................... 16
2.2.12. Min/Max values..................................................... 16
2.3. Timers................................................................................. 16
2.4. User averages................................................................... 18
2.5. Logic functions................................................................. 19
2.6. Programmable alarm functions .................................... 19
2.7. Communication............................................................... 20
2.7.1. PC port.................................................................... 20
2.7.2. Remote control connection................................ 21
2.8. Self-supervision................................................................. 21
3. Applications..........................................................................23
3.1. Generator measurements (three-phase).................... 24
3.2. Generator measurement, economy circuit
connection....................................................................... 25
3.3. Generator measurement, Aron’s connections........... 26
3.4. Measurement and data acquisition system based on
VAMP 260s and communication via Profibus............. 27
3.5. Power Monitoring Unit in a 400 V network................... 28
4. Connections .........................................................................29
4.1. Digital inputs..................................................................... 29
4.2. Auxiliary voltage .............................................................. 30
4.3. Output relays.................................................................... 30
4.4. Serial communication connection............................... 30
4.5. Analogue outputs (option) ............................................ 30
4.5.1. mA scaling examples........................................... 31
4.5.2. Exception control of analogue outputs ............ 33
4.6. Block diagram.................................................................. 34
4.7. Connection diagram...................................................... 36