VAMP 259 - Page 44

Table of Contents
Technical description
44
VAMP 24h support phone +358 (0)20 753 3264
VM259.EN007
9.2.2. Test voltages .......................................................... 281
9.2.3. Mechanical tests .................................................. 281
9.2.4. Environmental conditions .................................... 282
9.2.5. Casing .................................................................... 282
9.2.6. Package................................................................. 282
9.3. Protection stages .......................................................... 282
9.3.1. Non-directional current protection ................... 282
9.3.2. Directional current protection ............................ 286
9.3.3. Voltage protection ............................................... 287
9.3.4. Frequency protection .......................................... 288
9.3.5. Power protection .................................................. 289
9.3.6. Synchrocheck function ........................................ 290
9.3.7. Second harmonic function ................................. 290
9.3.8. Circuit-breaker failure protection ...................... 290
9.3.9. Arc fault protection stages (option) .................. 291
9.4. Supporting functions ..................................................... 292
9.4.1. Inrush current detection (68) .............................. 292
9.4.2. Disturbance recorder (DR) .................................. 292
9.4.3. Transformer supervision ........................................ 292
9.4.4. Voltage sag & swell .............................................. 293
9.4.5. Voltage interruptions ............................................ 293
10. Abbreviations and symbols .............................................. 294
11. Constructions ...................................................................... 296
12. Order information ............................................................... 297
13. Revision history ................................................................... 299
14. Reference information ....................................................... 302