Three-phase 220V isolation transformer product overview

WSG series three-phase dry-type transformers are produced by our company using high-quality materials and advanced technology for many years. and tunnels and other transmission and distribution sites.

WSG series three-phase dry-type transformers are mainly used for various power supply places with AC 50-60Hz and voltage not exceeding 500V, various input and output voltages of products, connection groups, and the distribution of tapped line group capacity can be based on user requirements. Carefully designed and manufactured.

Isolation Transformer Technical Characteristics

★Input voltage: rated voltage ±10%

★Output voltage: rated voltage +5% (load capacity)

★Efficiency: ≥95% ★Waveform Distortion: No additional waveform distortion

★Function: with input voltage, output voltage, current and other instructions

★Protection: With overcurrent protection

★Long-term continuous unattended work

★Insulation resistance: ≥50MΩ

★Electrical strength: no breakdown and flashover phenomenon at power frequency sinusoidal voltage of 2000V for one minute

★Overload capacity: twice the rated current for one minute.

Isolation Transformer Connection Group

Isolation Transformer Conditions of Use

★Ambient temperature: -15℃—+40℃

★Altitude: <1000m

★Relative humidity: <90%

★There is no gas vapor, chemical deposition, dust, dirt and other explosive and corrosive media that seriously affect the insulation of the transformer in the installation site.

★Any special conditions of use that do not meet the above requirements should be determined through consultation between the user and our factory.

Structural characteristics of WSG three-phase dry-type isolation transformer

The iron core of the SG series three-phase dry-type transformer is made of high-quality cold-rolled silicon steel sheets. According to the different insulation grades, the whole is impregnated with insulating paints of different insulation grades, which can effectively reduce the noise of the transformer and reduce the influence of salt spray and mildew on the transformer. . According to the different protection levels, the transformer box is made of high-quality steel plate. The structure not only fully considers the air circulation, but also effectively plays a protective role. The transformer wiring cable is also very convenient to connect, and the design is full of humanization. Voltage and ammeter, power indicator, molded case circuit breaker, etc. can be installed according to user requirements.

WSG three-phase dry-type isolation transformer ordering instructions

★Product model

★Rated capacity

★Rated voltage

★Connection group

★How to work

★Insulation class

★Protection level

★Other special requirements will be specified in the technical agreement.

User acceptance and installation instructions of WSG three-phase dry-type isolation transformer

1. Unpacking inspection:

Whether the box is damaged during transportation; whether the technical documents, qualification certificates, warranty cards and accessories in the cabinet are complete; whether the transformer and other components are intact; whether the fasteners are loose or displaced, and whether the terminals are in contact bad.

2. Instructions for seating:

The transformer installation site must be dry and ventilated, without strong vibration, and no leakage of dust, sand, rainwater; There is enough room for ventilation and maintenance of the machine.

3. Insulation requirements:

Short-circuit the "input" and "output" terminals and lead out the test point. Use a 1000 megohmmeter to test the insulation resistance between the test point and the ground (case). The value should be greater than 2 megohms.

4. Check the wiring:

The first and most important work of the commissioning personnel is to carefully check the wiring. This work is the key to ensuring the reliable operation of the transformer and must be done carefully. details as follows:

a: Check whether the main circuit wiring is firm and reliable, especially if the connection between the QF air switch and the KM contactor is loose, it must be tightened.

b: Check whether the connection of various electrical devices on the back of the panel, such as voltmeter, ammeter, and indicator light, is reliable. If it is loose, it must be tightened.