Dynamic Voltage Stabilizer, What Are The General Maintenance And Inspection Items Of The Voltage Stabilizer?

Dynamic Voltage Regulator (DVR) General maintenance inspection items are as follows:

⒈ Check whether the voltage stabilizer still has design and installation defects;

⒉ Check whether the load current and operating voltage of the voltage stabilizer are normal;

⒊ Check whether the voltage stabilizer has oil leakage, whether the oil level, oil color and temperature exceed the allowable value, the upper oil temperature of the oil-immersed self-cooling voltage stabilizer is generally below 85℃, and the strong oil-air cooling and strong oil-water cooling voltage stabilizers should be below 75℃;

⒋ Check whether the high and low voltage porcelain bushings of the voltage stabilizer are clean, and whether there are cracks, damage and flashover discharge marks;

⒌ Check whether the wiring terminals of the voltage stabilizer have poor contact and overheating;

⒍ Check whether the operating sound of the voltage stabilizer is normal; there is a uniform humming electromagnetic sound during normal operation. If there is a crackling discharge sound inside, it may be a breakdown of the winding insulation. If there is an uneven electromagnetic sound, it may be that the core-penetrating bolts or nuts of the iron core are loose.

⒎ Check whether the moisture absorbent of the voltage stabilizer has reached the saturated state;

⒏ Check whether the oil shut-off valve of the voltage stabilizer is normal, and whether the shut-off valve leading to the gas relay and the shut-off valve of the radiator are in the open state;

⒐ Check whether the explosion-proof pipe diaphragm of the voltage stabilizer is intact, and whether the diaphragm glass is engraved with a "cross";

⒑ Check whether the cooling device of the voltage stabilizer is operating normally, whether the temperature of the heat dissipation pipe is uniform, and whether there is any blockage in the oil pipe;

⒒ Check whether the housing of the voltage stabilizer is well grounded;

⒓ Check whether the gas relay is full of oil and no gas exists;

⒔ For outdoor voltage stabilizers, focus on checking whether the foundation is good and whether the foundation sinks. For transformer poles, check whether the poles are firm and whether the wooden poles and pole roots are rotten.

⒕ For indoor voltage stabilizers, focus on checking whether the doors and windows are intact and whether the wire mesh of the blinds is intact;

⒖ Other items that should be checked.