| Brand | ROCKWILL |
| Model NO. | Intelligent Vacuum Sectionalizer for Fault Isolation-12kV |
| Rated voltage | 12kV |
| Rated frequency | 50/60Hz |
| Series | FZW32 |
Rockwill voltage-time type intelligent sectionalizer complete set, based on FZW32 vacuum load break switch platform, designed for 12kV distribution feeder automation. Cooperates with substation outlet breakers or intelligent reclosers to perform fault handling using voltage-time logic, identifying short-circuit and ground fault types, isolating fault sections, and restoring power to non-fault sections. Supports 3G, GPRS, CDMA, GSM, and fiber communication for real-time remote monitoring and control.
| 1 | Rated voltage | kV | 12 |
| 2 | Rated current | A | 630 |
| 3 | Rated frequency | Hz | 50/60 |
| 4 | Rated short-time withstand current | kA | 20 |
| 5 | Rated short-circuit duration | s | 1 |
| 6 | Rated short-circuit making current (peak) | kA | 50 |
| 7 | 1min power frequency withstand voltage | kV | 42/48 |
| 8 | Lightning impulse withstand voltage | kV | 75/85 |
| 1 | Rated supply voltage | V | AC 220V±20% |
| 2 | Rated power consumption (operating) | VA | 500 |
| 3 | Standby power consumption | W | 10 |
| 4 | Voltage transformer ratio | kV | 10/0.22 |
| 5 | Zero-sequence voltage detection | V | ≤120 |
| 6 | Voltage-time wait time setting | ms | 120–180 |
| 7 | Controller power frequency withstand | kV | 2 |
| 8 | Operating temperature range | ℃ | −40 to +70 |
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Fault nature |
Fault handling methods |
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Breakdown |
l Fault occurrence: CB or FB protection trips, automatic and rapid opening after loss of pressure on both sides of the segment. |
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l Fault timing: CB or FB coincide, and the segmenter has a pressure delay time closing. |
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l Fault isolation: detect line loss of pressure, CB or FB trip, segmenter automatically open and lock and close |
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l Restore power transmission: CB or FB secondary coincide, and the non-fault section of the feeder restores power. |
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Instantaneous failures |
l Fault occurrence: CB or FB protection trips, automatic and rapid opening after loss of pressure on both sides of the segment. |
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l Resume power transmission: CB or FB coincide, the fault disappears, and the segmenter closes when there is a calender at one time, and the power transmission is resumed. |
Multiple communication options are available including 3G, GPRS, CDMA, GSM SMS and optical‑fiber. It uploads equipment status and fault information to background SCADA system for real‑time remote monitoring & control.
It cooperates with substation outlet breaker or intelligent recloser for 12 kV overhead‑feeder automation, realizing fault section isolation and power restoration of healthy sections.
This complete‑set product offers a 10‑year warranty
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