ZGB-10 high voltage cabinet protection device is a relay protection device. It is mainly used for 10kV and below lines, and can also be used for 110 66 35kV lines. Various fault protection is installed on the high-voltage switch cabinet or used as electric power. The relay protection of the power, oil, chemical, metallurgical, coal, etc. industrial and mining enterprises power supply lines
The ZGB-10 high‑voltage cabinet protection unit is designed for installation in high‑voltage switchgear and provides over‑current, fast‑break, ground‑fault, undervoltage and three‑phase reclosing protection for lines up to 110 kV. The manual describes the device’s functional variants (ZGB‑11, ZGB‑12, ZGB‑13) and explains how to select protection modes via panel switches.
The document includes principle diagrams, detailed wiring instructions, rated parameters, test procedures, storage conditions, and warranty information. It is intended for engineers and technicians responsible for installation, commissioning, and maintenance of the protection unit. This manual is written in Chinese.
| Overcurrent fast‑break protection rated current | 1.5–10 A |
|---|---|
| Overcurrent fast‑break protection rated frequency | 50 Hz |
| Ground protection rated current | 1 A |
| Ground protection rated frequency | 50 Hz |
| Undervoltage protection rated voltage | 100 V |
| Undervoltage protection rated frequency | 50 Hz |
| Three‑phase reclosing rated DC voltage | 110–220 V |
| Auxiliary excitation rated voltage | DC 48 V / 110 V / 220 V (‑20% +10%) |
The overcurrent fast‑break protection is rated for a current of 1.5 to 10 A and a frequency of 50 Hz.
Ground protection is rated for a current of 1 A and a frequency of 50 Hz, selectable via the panel switch.
Store the unit at temperatures between –25 °C and +40 °C, humidity not exceeding 80 %, and keep it away from corrosive or explosive gases.
The device is covered by a two‑year warranty from the date of manufacture, provided it is used according to the manual.