XZW Outdoor distribution transformer integrated distribution box

Main purpose and scope of application
XZW type outdoor distribution transformer integrated distribution box is a low-voltage complete set of switchgear designed in accordance with the requirements of the national rural power grid construction, transformation and design department, based on the principles of safety, economy, reasonableness and reliability. The technical standards, technical specifications, and the wiring scheme of the metering unit are designed in accordance with the "Electric Energy Metering Cabinet Design, Installation and User Manual". This product integrates a new outdoor integrated distribution box with multiple functions such as overcurrent, overvoltage, and phase loss protection. This product has the advantages of small size, high protection level, perfect protection performance, and high degree of automation. It is the ideal product of choice for the transformation of rural power grids. It can be widely used in power distribution systems with AC 50Hz and rated voltage 380V, as power lighting and power distribution equipment.
This product complies with: National Standard GB/T7251.12-2013, GB/T15576-2008 (our company is the drafting unit of this standard).    

Working conditions
1. Ambient air temperature: not higher than +40℃, not lower than -25%, 24h average temperature not higher than +35%;
2. Altitude: not more than 2000m;
3. Relative air humidity: temperature is + The relative humidity can reach 100% for a short time at 25°C;
4. The surrounding medium is free of flammable, explosive, conductive dust and non-damaging insulating medium;
5. The installation site has no severe vibration and bumps, and the installation tilt is not more than 5° .

Model and meaning

Product features
1. The front and rear doors of the power distribution box are opened, and the outer shell is all made of stainless steel plate bending and welding, which has strong anti-rust ability. The upper part of the power distribution box is equipped with mesh vents and the lower part is equipped with shutters to form upper and lower ventilation channels;
2. The distribution box has the functions of power distribution metering, feeding, voltage measurement, reactive power compensation and leakage protection, and the corresponding components can be selected according to the size of the transformer;
3. The distribution box adopts leakage relays and AC contactors. The matched leakage pulse protection device, the device cuts off the current when the ground leakage current of the protected power supply system gradually increases to exceed the rated leakage action current of the relay;
4. The reactive power compensation part of theswitchingelement can be used with a static AC contactor. It is also possible to use a compound switch or a capacitive non-contact switch to switch the capacitor, so that the switching process has no inrush current, no operating overvoltage, no arc, fast response speed, no working noise, stable and reliable operation; At the balance load, the method of separate phase compensation and total compensation can be adopted to ensure the consistency of the three-phase power factor.

Main technical parameters
1. Rated voltage: 400V+20%;
2. Rated current: 25, 40, 63, 125, 160, 200, 250, 325, 400A;
3. Rated frequency: 50Hz;
4. Insulation resistance: ≥4M ?;
5. Dielectric strength: main circuit 2.5kV, 1min;
6. auxiliary circuit: 2.0kV, 1min.
 
Ordering instructions
1. Transformer capacity (kVA);
2. Primary plan diagram;
3. Number of branch circuits;
4. Compensation capacity and method;
5. The shell is made of cold-rolled steel or stainless steel;
6. The installation method is single pole, Double rod.