1. Specially designed for improving the utility voltage in remote area.
2. Automatically change the voltage step to solve the low voltage problem for the customers.
3. Wireless monitoring. 4. Double dipped impregnation in vacuum tank.
|Voltage Grade||<= AC1140V|
|Input Voltage range||Rated voltage ±10%|
|Output Voltage||Rated voltage ±3% when input voltage is at the rated voltage.|
|Frequency||50Hz or 60Hz|
|Dielectric Strength||3500V / 10mA / 60s|
|Loading capability||When the transformer is 100% loaded, it can take 3 times current in short time. |
|Insulation||≥100MΩ ( DC 500V )|
Founded in 1983, GridStone Electric is a leading manufacturer of automatic voltage stabilizer and transformer. The products currently include digital static voltage stabilizer, digital servo voltage optimizer, power factor correction units, LV and MV transformers and reactors, UPS, Variable Frequency Power Source, Oil Immersed Induction Voltage Regulator. Thanks to over 30 years in the business and on going technical research, GridStone have become a competitive high-tech company, and meet the requirements of a constantly growing number of customers through design, production and service.
Besides standard production, GridStone is flexible and strong at custom design and production according to the customers' specification. Expert training and technical support are available to serve the customers quickly and professionally.
GridStone factories are ISO9001 and ISO14001 certified.
1983, GridStone factory for automatic voltage stabilizer was started, and th first servo voltage stabilizer in
China was successfully produced.
1985. Gridstone factory for transformer was started
1998. New office and factory of voltage stabilizer were started in Shanghai,China.
2002. The first static voltage stabilizer was released, and massive production started at end of the year.
2008. Brand name "Shanghai Voltage Regulator" was started in China.
2009. New types digital voltage stabilizers were released. These new products are more fast, more reliable
and more intelligent.
2010. The first frequency and voltage regulator with IGBT is released.
2014. New factory for transformer was started.
2016. GridStone brand name is started to be used for all voltage stabilizers and transformers to be sold