Overview
JLSZW-10W combined transformer (also known as metering box) consists of voltage and current transformers. This product is used for AC 50HZ, rated voltage below 10KV three-phase line, used for voltage, current, electric energy measurement and relay protection, suitable for urban power grid, rural power grid outdoor substations, and can also be used in various substations in industrial enterprises. The combined transformer of active and reactive energy meters is called a high-voltage energy metering box. This product can replace oil-immersed combined transformer (metering box).
This product can be a combination of voltage transformer and current transformer for measuring single-phase power; it can be a combination of two voltage transformers and two current transformers for measuring two watt meters in three-phase three-wire system method to measure three-phase power; it can also be a combination of three voltage transformers and three current transformers for three-phase power measurement. When connecting the transformer, the voltage terminal of the transformer is connected in parallel with the output of the transformer when combined, and the current line of the transformer passes through the combined transformer. Combined transformers are generally used for energy metering in high-voltage power grids.
Features
This product consists of a combined transformer and an instrument box.
The combination transformer consists of two single-phase voltage transformers (PT) and two current transformers (CT). Both PT and CT are electromagnetic, and the two PT windings are connected by V/V to form a three-phase measuring device. The primary windings of the two CTs are connected in series with grids A and C, respectively. A grounding screw is welded on the side of the box.
The instrument box is connected to the secondary winding outlet of the combined transformer. The instrument box is equipped with a three-phase active energy meter and a reactive energy meter, and the numbers can be clearly read from the box.
This product is especially suitable for small and medium transformer users. Active and reactive energy can be measured completely and accurately. The product design is ingenious and reasonable, the structure is compact, beautiful, and the parts are tightly closed. Equipment and instrument boxes can also be installed separately
Conditions Of Use
Ambient temperature -30℃～+40℃
Below 2500 meters above sea level
The air temperature should not be greater than 85% of the installation site,
There should be no serious vibration and turbulence, no strong corrosive gas, and should not be installed in flammable and explosive places.
