Line Protection of Isolation Transformer

The isolation transformer commonly known as safety transformers, refers to the transformer of the input winding and output winding with the electrical isolation device. Which is used to carry out the electrical isolation to two or more coupling circuits. The isolation transformer is generally used for machine repair and maintenance, playing the role in protecting, protecting thunderstruck, filtering, so as to avoid accidental contact with charged body simultaneously. The transformer can isolate their respective current of original secondary-side winding coil. The isolation transformer is used in the power industry in European countries in early time, widely used in the electronics industry or industrial and mining enterprises, also used for the control power of general circuit in the machine tools & mechanical equipment, the power of safety lighting and indicator lights.

Transformers are widely used in a variety of electronic products, its main functions are: voltage conversion; impedance transformation; isolation; regulated voltage (magnetic saturation transformer) and so on. There are two common reasons for the transformer damage: primary overvoltage and secondary short-circuit. Both of these faults cause the transformer's "copper loss" (heat dissipation of the current through the coil) and "iron loss" (loss induced by "eddy current") increasing rapidly in a short time and result in the coil temperature rising ; If these faults can’t be handled in a timely manner, the coil insulation performance will be reduced, and even burn the transformer. If the above-mentioned transformer failure occurred and the transformer was not timely cut off, thus, some part of associated components in the circuit will correspondingly cause the overload or overwork. In severe situation, part of components will lead to failure due to overheating, resulting in the local circuit damaged.

The isolation transformers are safe power, generally used for repairing the machine, maintenance, playing the role of protection, lightning proof, filtering. The Isolation transformer is a kind of 1: 1 transformer. Primary single-phase is 220V, secondary is single-phase 220V. Or primary three-phase 380V, secondary is three-phase 380V.

The principle of isolation transformer is that the input and output windings are electrically isolated from each other in the transformer, to avoid accidental contact with the charged body simultaneously (as the insulation is damaged, causing the possible charged metal parts) and the risk of occasionally touching the ground, its principle is the same as that of the ordinary dry-type transformers, also to use the electromagnetic induction principle, which mainly isolates the primary loop of power, the secondary loop floating to the ground, ensuring the safety of electricity.

The main role for the principle of isolation transformer main role is: the electricity on the primary side and secondary side are completely insulated, also isolate the loops. In addition, its characteristics is that high-frequency loss of its iron core is high, thereby making use of this feature, which can inhibit the high-frequency clutter into the control loop. By using the isolation transformer, achieving the second suspension to the ground, it can only be used on the occasion of the smaller power supply range and the short power line. At this time, the system’s Capacitive grounding current is too small to cause harm to the human body. Another very important role is to protect personal safety and isolate the dangerous voltage.

Baoding Zhongyi Electrical Material Manufacturing Co., Ltd. is a professional power transformers manufacturer, the company possesses the professional production equipments, hoisting, tooling & testing equipments and has established the perfect quality management system. All performance indicators of our products have reached the standard.

The company’s main products: power distribution transformers, dry-type transformers, box-type transformers, power transformers, complete sets of switchgears and so on. Our company adheres to the enterprise purposes of "the details decide the success or failure, the good faith forges the future", abides by the business philosophy of "taking the market with quality, seeking development with innovation and management for benefit", making our products widely used for different industries, such as power plants, chemical industry, construction, mining, metallurgy, rail transportation etc., so as to meet the needs of various users. Our company won the trust of our customers by the excellent quality products, thoughtful and meticulous service.

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Address: Yucheng Industrial Zone, Qingyuan District, Baoding City, Hebei Province