Products

Square through type residual current transformer is mainly used in cable circuit environment. It has simple structure, small volume and flexible application. According to specifications of the cable used in the main circuit, there are various through hole diameter. The through hole diameter of this series of products ranges from 100mm to 450mm, and the main circuit current includes 63A ~ 2000A. This series of products can meet the technical requirements of 0.2 level, 0.5 level and 1 level and other difference precision. At the same time, it can also meet the strict requirements of the new national standard for the balance characteristics. The unbalanced current output value can also be better than 30mA, 10mA, 5mA,  or even 3mA, greatly reducing the false alarm caused by the magnetic field interference of the main circuit current, providing sufficient guarantee for the reliability of the equipment. Excellent and advanced production process. This series of products meet the requirements of GB-14287.2-2005 and GB14287.2-2014.  

The high frequency current sensor is suitable for when partial discharge occurs inside the cable, the high frequency current will propagate to the ground along the ground wire. A sensor is installed on the ground cable to detect high-frequency current signals for local discharge detection. The sensor uses Rothschild coil operation mode, which surrounds multiple coils of conductive coil on a ring magnetic material. The high frequency alternating electromagnetic field caused by high frequency current passing through the center of the magnetic core will generate induced voltage on the coil. There is no electrical connection between the measurement loop of the sensor and the measured current, which is a non-invasive detection method ,and the equipment under test does not need to be shut down.  

When partial discharge occurs inside the cable, the high-frequency current will propagate to the ground along the ground wire. A sensor is installed on the ground cable to detect high-frequency current signals for local discharge detection. The circulation sensor uses the Roche coil working mode, and there is no electrical connection between the measurement loop of the sensor and the measured current, which belongs to the non-invasion detection method, and the equipment under test not need to be shut down.    

High precision transient recording type fault indicator, according to the applicable line can be divided into overhead line type,cable line type,according to the way to monitor the fault can be divided into external signal type, transient and steady state signal detection type, according to the indication mode is divided into local indication type and remote transmission type, these types are divided into different aspects of the fault indicator. Therefor, it can be combined as an overhead line local indication signal type fault indicator.

Transient recording fault indicator is mainly used in distribution system to monitor and locate line faults. It can record the transient current and voltage waveform when the fault occurs. When there is a fault in the line, such as a short circuit or ground fault, the fault indicator will quickly  capture the transient signal. These transient signals have a short duration, but contain the key information of the fault, such as the fault direction, fault type and so on. The fault indicator is easy to install and is generally installed on an an overhead line or cable line. Its advantage is that it can accurately locate the fault section, reducing the time and labor cost of fault finding. At the same time, through the analysis of the recorded wave data, it can also help the staff to better understand the characteristics of the fault, which is helpful to evaluate and optimize the operating state of the power grid.

Suitable for any voltage level of the cable line, can be induced from the wire load current, for intelligent electronic devices, relay protection devices, communication equipment to provide a stable working power supply, for the electric control mechanism to provide operating power, and can charge the backup battery or energy storage capacitor.  

This product is the electronic core and shell assembly into one, easy for users to produce and assemble, accelerate the production schedule. Adopt self-fit flat structure, when the electric CT is closed, the iron core surface will be automatically flat, reduce the assembly time and working noise, and improve the electric performance. Adopt rotating shaft structure combined with anti-falling screws, easy to install. Using silicone waterproof ring, improve the anti-rust ability of electric CT,reduce the risk of loud noise and equipment offline due to rust of electric CT.

LMZT-10 current transformer is suitable to be installed on the special inflatable cabinet for the measurement and protection of current and zero sequence current. It is also be used for the measurement and protection of zero sequence current of multiple cable circuits. The iron core and secondary winding of this series of current transformers are vacuum-cast with high quality epoxy resin in a flame-retardant plastic housing, which is moisture-proof, stable and maintenance-free.  

LSY3-10/130 three-phase integrated current transformer is suitable to be installed on the three-phase bushing of ring network switch cabinet and main column. It is used for the measurement and protection of three-phase current and zero sequence current, and can also be used for the measurement and protection of zero sequence current of multiple cables circuits. The iron core and secondary winding of this series of current transformers are vacuum-cast with high quality epoxy resin in a flame-retardant plastic housing, which is moisture-proof, stable and maintenance-free.  

LSY3-10/127 three-phase integrated current transformer is suitable to be installed on the three-phase bushing of ring network switch cabinet and main column. It is used for the measurement and protection of three-phase current and zero sequence current, and can also be used for the measurement and protection of zero sequence current of multiple cables circuits. The iron core and secondary winding of this series of current transformers are vacuum-cast with high quality epoxy resin in a flame-retardant plastic housing, which is moisture-proof, stable and maintenance-free.

CT107 three-phase integrated current transformer is suitable to be installed on the three-phase bushing of ring network switch cabinet and main column switch, which is used for the measurement and protection of three-phase current and zero sequence current, and can also be used for the measurement and protection of zero sequence current of multiple cables  circuits. The iron core and secondary winding of this series of current transformers are vacuum-cast with high quality epoxy resin in a flame-retardant plastic housing, which is moisture-proof, stable and maintenance-free.  

The open-closed zero sequence current transformer is improved on the basis of the traditional transformer. Made of free opening and closing, it can be quickly installed and disassembled in the state of no power failure and no wire disassembly, and the operation is sample.