How to translate HL series standard current transformer?

The standard current transformer is used as a current transformer calibration standard in the error test of the transformer, and the standard current transformer is composed of a primary coil, a secondary coil, an iron core, an insulating support and an outlet terminal. The core of current transformer is made of silicon steel sheet, and its primary coil is connected in series with the main circuit, and through the measured current i1, it produces alternating magnetic flux in the core, so that the secondary coil induces the corresponding secondary current i2 (its rated current is 5A). If the excitation loss is ignored, then i1n1 = i2n2, where n1 and n2 are respectively.

The number of turns of the primary and secondary coils. The converter ratio of the current transformer k=i1 i2=n2 n1. Since the primary coil of the current transformer is connected in the main circuit, the primary coil must be insulated with the primary line voltage to the ground to ensure the safety of the secondary circuit and personal personnel.

The secondary circuit is composed of the secondary coil of the current transformer, the current coil of the instrument and the relay in series. Current transformers can be broadly divided into two categories, current transformers for measurement and current transformers for protection.

Function: In the power supply line, the current size varies greatly, from a few amperes to tens of thousands of amperes. In order to facilitate the measurement of instruments and meters, it needs to be converted into a relatively uniform current, and the voltages on the power supply lines are relatively high, so it is very dangerous for instruments, meters and people to measure directly.

For this purpose, the current transformer is designed to function as a converter and galvanic isolation. Fear of harming the plate.

This data is ** on the map, and the final result is subject to the latest data on the map.

Standard Voltage Transformer is used as a voltage transformer calibration standard in the error test of transformers. This equipment is mainly designed and manufactured for the actual needs of the grassroots power supply and production department, and the company can provide gas-filled voltage standard transformers and dry-type standard voltage transformers. 10kV, voltage transformer is a high-voltage level, high-accuracy voltage transformer, which can realize the calibration of voltage transformer below 10kV, and the secondary load that can be carried at 100V, which can fully meet the verification requirements of voltage transformer.

Huatian power automation manufacturers have a detailed introduction to this aspect, if you need to see their company's **.

Standard Current Transformer Standard Voltage Transformer Automatic Current Transformer Comprehensive Tester Automatic Transformer HJY Series Precision Voltage Transformer (Oil-immersed) HJG Series Precision Voltage Transformer (Dry) HL Series Standard.

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Precautions. 1. When verifying the current transformer, the current ratio of the standard current transformer and the tested current transformer must be the same.

2. Strictly follow the wiring of the line given in the figure.

3. Before verifying the transformer, it is necessary to test whether the load box is accurate.

4. During the verification process, it is strictly forbidden to open the secondary winding.

6. In Figure 4, the second open circuit, evenly and slowly adjust the regulator, so that the dial gauge indication increases from 0 to 100%, and then evenly and slowly decreases to zero. Repeat this process 2 3 times. After demagnetization, before cutting off the power supply, the secondary winding should be shorted.

7. The wiring schematic diagram of the current transformer with the current booster is roughly the same as the above wiring diagram, except that the output winding of the current riser and the primary winding of the transformer are the same winding, and the rest are the same.

Standard voltage transformers.

Transformer load box.

SL series booster.

Generator rotor AC impedance meter.

The title of the report may be clearer like this: the secondary side of the current transformer is connected to the step-down transformer =?

The secondary side of the current transformer is regarded as a constant current source, and its current is proportional to the current on the primary side, and the voltage at both ends is proportional to the impedance of the connected load.

When the secondary side of the current transformer is not connected to the ammeter, but to the step-down transformer, the voltage at both ends is proportional to the inductive reactance of the primary transformer, that is, u=i*xl.

1. If the primary inductance reactance is not very large, the u will not exceed the limit value of the transformer, and the secondary voltage of the step-down transformer is proportional to the primary voltage (i.e., the transformation ratio), and the output current power will increase according to this proportion. When the transformer is short-circuited in the secondary, the electrical energy is converted into thermal energy due to the impedance part of the transformer and transformer.

a) When the secondary load is very light (i.e. the impedance is very large), this combination can be regarded as a "current-voltage" converter because the secondary voltage of the transformer is proportional to the current on the primary side of the transformer.

b) When the secondary load is fixed, because the secondary current of the transformer is proportional to the current on the primary side of the transformer, this combination can also be regarded as a "current-current" converter, which can be used to connect to an ammeter of another range.

2. If the primary inductance of the transformer is too large, it may make the U too high and cause accidents such as transformer breakdown or transformer breakdown.

This product is a self-boosting integrated combined voltage transformer designed and manufactured for the actual needs of the grassroots power supply and production departments. This product has the advantages of compact structure, small size, light weight, easy to carry, simple operation and no maintenance. This product is particularly suitable for use in the field and can also be used in the laboratory as a standard voltage transformer and test transformer.

10kV, voltage transformer is a high-voltage level, high-accuracy voltage transformer, which can realize the calibration of voltage transformer below 10kV, and the secondary load that can be carried at 100V, which can fully meet the verification requirements of voltage transformer.

1. Compact structure, small size, easy to carry 2, no maintenance, simple wiring and operation.