Manual & Motorised – Three Phase
Industrial Oil Immersed Variable Transformers
150 to 800 Amps
380 to 415V three phase input oil-immersed manual & motor controlled variable transformers, delivering an output of 20V up to 600V [1000V –X1000 Option].
As Magnetic Induction brushless designed solutions they are ideal for larger industrial-style applications.
To learn more please check out the listings below –
Proven & Endurable Design
As a Magnetic Induction based solution, iSA Variable Transformers utilise a simple, yet highly reliable, rotor and stator design principle to increase or reduce the magnitude of the voltage in a series transformer winding, thereby allowing the output voltage to vary.
The arrangement is similar to a motor, except that the rotor does not rotate continuously. Its maximum rotation is only 130 degrees. The magnetic coupling between the rotor (the shunt winding) and stator (series winding) will cause the magnitude of the voltage in the series winding to increase or decrease, depending on the angle or position of the rotor to the stator.
As standard models are offered as oil-immersed, however on request they can be supplied as air-cooled solutions [-AC Option].
Motorized (Auto) or manual with an electromagnetic brake.
Rugged Endurable Industry-Proven Design
Built to exacting mechanical tolerances, using the finest materials available, Setavolt™ iSA Series Variable Transformers have no carbon brushes and no moving parts to wear out. They deliver a Maintenance Free and Hassle-Free performance. All winding and wirings utilise 99.9% pure copper EC grade materials.
Stepless Adjustable Output
iSA Series Variable Transformers deliver a step-less, distortion-free adjustable output voltage. The output voltage is typically adjustable from a few volts to over 100% of the input voltage.
High Overload Capability
Rated to support a 100% continuous loading, Setavolt™ iSA Series Variable Transformers are able to support a 150% overload situation for up to 100 seconds and a 200% overload up to 10 seconds.
Metering & Controls
All models are offered with digital output metering of the voltage and current. UP / Down Push Buttons enable output voltage selection.
International Standards Compliance & CE Certification
All Setavolt™ variable transformers are designed and manufactured to comply with all relevant International Standards and appropriate European Union CE Directives.
|Amps||Setavolt Model||Nominal |
|kVA @ max|
W x H x D mm
|150 Amps||iSA-150H||380 – 415V||156||20 to 600V||1300 x 1900 x 1300||2600|
|200 Amps||iSA-200H||380 – 415V||208||20 to 600V||1420 x 1900 x 1420||3400|
|300 Amps||iSA-300H||380 – 415V||312||20 to 600V||1510 x 1900 x 1510||3700|
|400 Amps||iSA-400H||380 – 415V||416||20 to 600V||1620 x 2000 x 1620||4000|
|500 Amps||iSA-500H||380 – 415V||520||20 to 600V||1620 x 2000 x 1620||4400|
|600 Amps||iSA-600H||380 – 415V||624||20 to 600V||1720 x 2220 x 1720||4700|
|700 Amps||iSA-700H||380 – 415V||727||20 to 600V||1820 x 2320 x 1820||4950|
|800 Amps||iSA-800H||380 – 415V||831||20 to 600V||1910 x 2320 x 1910||5100|
Note: Other voltage configurations and higher-rated models are available on request/quotation.
|Input Voltage:||380V or 400V or 415V, Three Phase, 4 Wire – Customer to Specify|
|Output Voltage:||20 – 600V Adjustable (No Load 20 – 720V)|
[Option – 30 – 1000V Adjustable – X1000]
|Power Factor:||> 0.95|
|Efficiency:||≥98% @ Full Load|
|Overload Capability:||≤ 100% max. current rating continuous|
≤ 150% max. current rating for 100 seconds
≤ 200% max. current rating for 10 seconds
|Protection:||Up/Down Over Limit – c/w 2 Stage Protection for Auto-Shutdown Protection|
In the event of Up / Down limit failure auto shutdown
|No Load Waveform Distortion:||< 3%|
|Insulation Class:||Class A|
|Cooling Type:||Oil Immersed or an option Air-Cooled [-AC Option]|
|Audible Noise:||< 65dBA at 1 meter|
|Environmental:||Temperature range 0 to 40°C. Derate by 2% for each additional °C up to a max of 60°C|
Suitable for indoor tropical use up to 95% RH (non-condensing)
Maximum altitude 1000m. Derate by 2.5% for each additional 500m
|Construction:||Enclosures to IP20 (NEMA 1 Style) BS EN5490 / IEV 60529|
|Standard Features:||Digital Input Voltmeter, Output Voltmeter and Ammeter with Phase Selector Switch|
UP/Down Push Buttons for Output Voltage Control and
Remote Push Button Controller with 3-meter cable cord
|Add-On Optional Accessories:||Output 30 to 1000V [-X1000]|
Air Cooled [-AC]
Field Power Source [-FPS]
– For DC Motor Blocked Core & Flux Testing Applications
|Standards Compliance:||BS EN 61558-1:2005 + AI:2009 & BS EN 61558-2-13:2009|
|CE Conformity:||CE Marked – compliant with European Union Directive 2006/95/EC (Low Voltage Directive)|
|RoHS Compliance:||Fully RoHS Compliant – complaint with European Union Directive 2011/65/EC (RoHS Directive)|
|Standard Warranty:||1 Year / 12 months from date of supply|
Sales & Technical Data Sheet
– iSA-H (380-415V) Models
Operator / User Manual
Operator Manual with sections on installation, and maintenance.
iSA Series Three Phase Industrial Variable Transformers comply with the relevant European Union (EU) health, safety, and environmental protection directives and regulations and are duly CE marked.
Sinalda UK Declaration
Low Voltage Directive – 2006/95/EC
Sinalda UK Declaration
RoHS Directive – 2011/65/EC