Table of Contents
Technical description
44
VAMP 24h support phone +358 (0)20 753 3264
VM259.EN007
Test voltages .......................................................... 281
Mechanical tests .................................................. 281
Environmental conditions .................................... 282
Casing .................................................................... 282
Package................................................................. 282
Protection stages .......................................................... 282
Non-directional current protection ................... 282
Directional current protection ............................ 286
Voltage protection ............................................... 287
Frequency protection .......................................... 288
Power protection .................................................. 289
Synchrocheck function ........................................ 290
Second harmonic function ................................. 290
Circuit-breaker failure protection ...................... 290
Arc fault protection stages (option) .................. 291
Supporting functions ..................................................... 292
Inrush current detection (68) .............................. 292
Disturbance recorder (DR) .................................. 292
Transformer supervision ........................................ 292
Voltage sag & swell .............................................. 293
Voltage interruptions ............................................ 293
Abbreviations and symbols .............................................. 294
Constructions ...................................................................... 296
Order information ............................................................... 297
Revision history ................................................................... 299
Reference information ....................................................... 302