SB,SBG,SBG-L series isolated power transformerDetailed product description：

SB, SBG, SBG-L series isolated power transformers

By using an isolation transformer to establish a new neutral ground connection, the common mode interference and other neutral line troubles in the power grid can be eliminated. The isolation transformer converts the three wire △ connection to a four wire Yo system, and further eliminates the high-frequency pulse interference and noise coupled inside the transformer by adding shielding. Although shielded isolation transformers can effectively prevent various N-G interferences (pulses and high-frequency noise), the transformer must be properly grounded and strictly grounded, otherwise the anti common mode interference will be ineffective. Our company designs and produces high-quality isolation transformers for customers.

Characteristic advantages:
Highly isolated
N-G has good performance
Highly common mode interference suppression
Convert △ to Y or Y to △
Voltage tap is easy to switch
Design according to the special performance requirements of users
Application:
Installed on the input or output terminal of the regulated power supply
Any system that requires isolation and shielding
Typical application of isolation transformer installed in stabilized power supply
1、 Connect an isolation transformer (delta/star) at the power input end
1. If the third harmonic and interference signals in the power grid are severe, using a △/Yo isolation transformer can remove the third harmonic and reduce the interference signals.
2. A △/Yo isolation transformer can be used to generate a new neutral line, making the equipment independent of the grid neutral line and avoiding abnormal operation of the equipment due to poor grid neutral line.
3. The current waveform distortion caused by nonlinear loads (such as third harmonic) can be isolated without polluting the power grid.
2、 Connect an isolation transformer (star/delta) at the power output end
1. To prevent current distortion of nonlinear loads, which affects the normal operation of the regulated power supply and returns to the power grid, and plays a role in purifying the power grid.
2. The distortion of nonlinear load current affects the accuracy of sampling. It can be sampled at the input of Yo/△ isolation transformer to obtain a control signal that reflects the actual situation, so as to ensure the normal control of the regulated power supply.
3. If the load is unbalanced, using Yo/△ will not affect the normal operation of the regulated power supply.
Model
(1) (D) SB power transformer: a transformer that can change the input or output voltage
(2) (D) SBG isolation power transformer: a shielded transformer capable of handling power grid interference;
(3) (D) SBG-L anti-interference power transformer: a purification transformer capable of handling interference pulses generated by grid power and loads.

Technical specifications of SB, SBG, SBG-L series isolated power transformers

1. Rated input voltage: three-phase 380V or single-phase 220V
Working frequency: 50Hz-60Hz
Efficiency: ≥ 98%
4. Temperature rise:<85 ℃
5 waveform distortion:<0.1%
6. Insulation strength: 2000V, no breakdown for 1 minute
7 Insulation resistance: winding resistance to ground insulation resistance three-phase ≥ 3.8M Omega; Single phase ≥ 2.2M Omega
Terms of Use
1. Applicable altitude: ≤ 5000m
2. Environmental temperature: -15 ℃ to+40 ℃
Relative humidity: ≤ 85%
The installation site should be free of gases, vapors, chemical deposits, dirt, conductive dust, and other explosive, flammable, and corrosive substances that seriously affect the insulation strength of the voltage regulator.
Any items that do not meet the above usage conditions should be determined through consultation with us.