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Overview
Siemens Energy invented the voltage regulator in 1932. Voltage regulators are highly reliable soutions for stabilizing voltage fluctions in the customer's grid 24/7. They are notably more cost-effective for customers compared to other oprions. Voltage regulators come in 1-phase or 3-phase models. Different cooling systems are available. They can be applied to any electrical system to improve voltage quality. The standard voltage regulator provides approximately 10% adjustment. However, in some designs, regulations of 15% and 20% are also available.
- Electrostatically-applied polyester paint provides greater resistance to corrosion in harsh environments.
- Type-316 stainless steel external hardware to eliminate rust and galling.
- Sealed tank has pressure relief device to vent gases produced during tap changes. The Siemens 55°C rise regulators can be loaded to up to 12 percent above nameplate rating, with the 65°C insulation system.
- External metal-oxide varistor (MOV) bypass arrester provides superior protection to the regulator series winding from surge and system transients.
- Oil-sight gauge allows oil levels and oil conditions to be checked without de-energizing the regulator.
- Motor capacitor installed in the control cabinet allows replacement without bypassing and transitioning the regulator out of service.
- Polarized disconnect switch (PDS) facilitates easy control installation of change out without taking the regulator out of service.
- Cover-mounted terminal block provides easier access to wiring by eliminating the need to go under the oil to change tap connections.
- Monitor and automatically control output voltage through the use of state-of-the-art microprocessor control panels MJ-6.
The standard voltage regulator provides approximately 10% adjustment. However, in some designs, regulations of 15% and 20% are also available. Available at 50 or 60 Hz, their ratings are calculated according to the voltage level of the transformer they are connected to (i.e., 10%). Voltage level ratings for 1-phase voltage regulators vary between 2.5kV and 19.9 kV and between 76.2kVA and 1110kVA. 3-phase units are available at 13.2kV, 34.5kV, or from 500kVA up to 4,000kVA.
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