Zy-wxt microcomputer-based ferroresonance elimination device

I. Overview of the device

Zyx-wxt series microcomputer harmonic elimination device is a new intelligent harmonic elimination device developed and produced by our company for 66KV, 35KV, 10KV, 6KV, 3KV and below voltage levels of neutral point ungrounded or through resistance, arc suppression coil grounding system, due to ferromagnetic resonance and often occurred voltage transformer (PT) burn or even explosion of malignant accidents.

Two, technical parameters

1. Scope of application: neutral point below 66KV is not grounded or grounded by arc suppression coil small grounding current system.

2. Number of bus sections: 1 ~ 2 sections.

3, harmonic elimination frequency: three frequency, two frequency, fundamental frequency, third harmonic or other high harmonic.

4, action frequency range (HZ) : three frequency (14 ~ 18), two frequency (22 ~ 27), fundamental frequency (47 ~ 52), third harmonic (145 ~ 162), other high harmonic (frequency greater than 52 non-third harmonic).

5, action voltage (V) : three-division frequency, half frequency 30±5, fundamental frequency, third harmonic, other high harmonics (frequency greater than 52 non-third harmonic) 110±5. The above startup values are the default experience values and do not need to be set.

6, remote alarm function: power off alarm, resonance alarm, overvoltage alarm, grounding alarm.

This series of alarms provides A pair of passive contacts (contact capacity 5A/250VAC, 5A/30VDC). In the DC circuit of voltage not exceeding 250V, current not exceeding 0.5A, and time constant 5±0.75ms, the disconnect capacity of the device output contact is 40W.

7, work status indication: running pilot light (green, flashing during the normal operation of), resonance lamp (red, harmonic elimination success within three times light), over-voltage alarm lamp (red, three harmonic elimination is not successful in light, overvoltage eliminated out), grounding alarm lamp (red), communication trouble light (red, twinkle failure).

Communication function: RS485.

9, power supply: AC 86-265V; Dc 120-370 - v.

10, the use of environment: temperature -10℃ ~ 55℃ humidity ≤90% atmospheric pressure 80 ~ 110KP

11, the device is embedded device maximum depth: 160(mm).