TNSJA 50KVA—3000KVA 3Phase

Download flyer



TNSJA series the 2nd generation Industrial Oil-immersed Induction (Brushless/Stepless) Voltage Stabilizer is composed of voltage regulator and transformer SSTS (including, oil tank, stator, rotor top Cover, drive control motor M, hand wheel, control circuit board and secondary circuit elements for voltage regulation control. It achieves the rotational voltage regulation through electric motor drive or hand wheel and gear coupling within the rotation range of 1800. Besides, it is provided with the electric SS limit and mechanical limit on the upper end of the oil tank. For electric SS limit, the power supply of motor is switched off by a limit switch and for the mechanical limit, the rotational limit is stopped by bolt protector. The stator winding and rotor winding are fixed by the base frame and put into the oil tank with 10 # transformer oil. When the load generates heat, the heat dissipates from the radiating pipe by the way of Oil-immersed cooling. The oil immersed voltage stabilizer has the functions of phase failure, phase loss, overvoltage and over-current protections, and its main circuit has the characteristics of contactless voltage regulation, no mechanical wearing, no spark, no interference and low failure rate. In addition, this voltage stabilizer has the advantages of high impact resistance, super strong instantaneous overload capacity, long service life and maintenance free.

  • Stepless voltage adjustment (brushless)With inductive and contactless voltage regulation, the voltage stabilizer can increase and decrease the load voltage linearly.
  • Excellent featuresBy using high-magnetic-inductivity silicon steel sheet made in Japan, this voltage stabilizer minimizes the no-load loss and no- load current, and with its performance utilized best, reduces power loss.
  • Robust, durable and long life expectancy
  • The internal body of this voltage stabilizer is induction voltage regulator IVR, containing no carbon brush and its main characteristics are permanent wear-proof, robust and long service life. Efficiency >98%, with no waveform distortion.


Widely used in Industry, Traffic, Defense, Rail Ways, Large machine tool, Metal Processing Equipments, Production Line, Air Conditioner, Broadcast Television, Building Lighting Equipment and other Equipments which need stable voltage, and are highly suitable to the equipments which needs high reliable and high stable power supply, or equipments in high amplitude of fluctuation voltage net.

Technical specifications:

Phase No. Three-phase four wire system
Input voltage Phase voltage: 220V ±20% (176~264V), line voltage: 380V±20% (304~456V)
Output voltage 380VAC
Output precision ±1~5% adjustable (factory set value: ±2%)
Frequency 50Hz/60Hz
Efficiency >98%
Response time ≤0.5sec.
Ambient temperature -10°C~+40°C
Relative humidity <95% 5000V/1min.
Dielectric strength >20ΜΩ
Insulation resistance <3%
Waveform distortion ≤65°C
Temperature rise <65dB
Noise Oil-immersed, self-cooled
Cooling way Microcomputer Intelligent Controller
Display Continuous
Working mode With over-voltage, under-voltage, phase failure,
Protection machine fault, oi-immersed self-cooled. auto. recovery etc, protection functions.



There are no reviews yet.

Be the first to review “TNSJA 50KVA—3000KVA 3Phase”

Your email address will not be published. Required fields are marked *