Overview
JLS type combined transformer (three-phase outdoor oil-immersed high-voltage power metering box) consists of two voltage transformers and two current transformers (referred to as two elements). It is an oil-immersed outdoor type (can be used indoors). Mainly used for high voltage power measurement of 35kV, 50Hz power grid. It is installed on the high voltage side of the power transformer. There are two three-phase active energy meters and two reactive energy meters in the instrument box. They are used for direct measurement of high voltage lines, whether the supply is forward or reverse. Metering equipment for local measurement of active and reactive energy. It plays an important role in preventing electricity theft, saving energy and strengthening power supply management.
In order to meet the needs of changes in electrical load in different periods, the product can be made into a double current ratio for adjustment options. If a two-way meter box is used, it can be used for network metering (i.e. separate measurement of power generation and consumption). This product has the characteristics of high precision, small size, reliable insulation, good heat dissipation performance, safe and stable operation, and simple and convenient wiring. According to the different requirements of users, there are a wide variety of products, which can be arbitrarily matched and freely selected. It is an ideal device for current power management.
The Main Technical Parameters
1. Rated frequency: 50Hz
2. Insulation resistance: primary to secondary, primary to ground ≥1000MΩ; secondary to secondary secondary to ground ≥50MΩ 3, 1 second
Thermal stable current: 75 times the rated primary current (RMS)
4. Dynamic stable current: 188 times rated primary current (peak value)
5. See the table below for other parameters
Technical indicators
1. Rated voltage: 35KV
2. Wiring method: binary V/V wiring method
3. Rated frequency: 50HZ
4. Voltage ratio: 35KV/100V
5. Voltage accuracy grade: 0.2; Current accuracy grade: 0.2S
6. Rated load: voltage 30VA; current 15VA
7. Power factor: 0.8
8. The current ratio is 5-500A/5A (double ratio can be used)
9. Power frequency withstand voltage: 10.5KV
Conditions Of Use
Ambient temperature: -25°C to 40°C
The average daily temperature does not exceed 30°C, and when the temperature is 20°C, the relative temperature does not exceed 85%
The altitude is below 1000 meters.
Outdoors, the installation site is free from serious pollution, severe vibration and bumps.
