JXB Transformer Neutral Grounding Protection Device
1. Scope of application
The JXB Transformer Neutral Grounding Protection Device is specially used for the neutral point of 110kV, 220kV, 330kV, and 500kV power transformers. It is composed of single-phase disconnector, neutral point arrester, current transformer, discharge gap and other components. It can realize two different operation modes of transformer neutral point grounding and ungrounded operation, thus avoiding damage to the transformer caused by the increase of transformer neutral point voltage due to system failure. This device is widely used in power, metallurgy, petrochemical, construction, environmental protection and other fields.
2. Product standards
GB/T156-93 GB/T1895-89 GB/T 311 GB/T 775 GB/T16927
GB/T5582 GB/T7354 GB11032 GB/T11604 GB191
3. Operation environment
1) Altitude: ≤1000 meters.
2) Ambient temperature: Maximum +40oC, Minimum -40oC.
3) Max outdoor wind speed: ≤45m/s.
4) Max Ground ramp degree: ≤3°.
5) Seismic level: ≤3m/s2 at horizontal direction and ≤1.5m/s2 at vertical direction.
6) Installation environment: No obvious and heavy pollution, no explosive and corrosive gas and dust, with good air ventilation and no severe vibration and shock.
7) If the application environment is different from the above standard conditions, please contact for customized designs.
4. Product advantages
1) Designed in strict accordance with the relevant provisions of national and industry standards, and equipped with special process and inspection processes to ensure the process, standardization and specialization of product manufacturing;
2) The complete set of equipment integrating electrical equipment such as disconnectors, zinc oxide arresters, discharge gaps and current transformers has the characteristics of small size, convenient installation and debugging, and high reliability;
3) It has the characteristics of high discharge voltage accuracy, small dispersion, and stable characteristics; it is accurate and fully effective in matching with the characteristics of the arrester and the insulation of the main transformer, with large thermal capacity and not easy to burn, which improves the protection safety and protection effect;
4) This device has the characteristics of flexible assembly and convenient use. Generally, a spherical gap is used, and a rod-shaped gap can also be used according to user requirements; the arrester and disconnector can be arbitrarily combined and matched according to project needs; the action of the disconnector can also be selected to use manual or electric mechanisms according to project requirements; the technical parameters of the gap can be debugged in the factory or on site.
