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RM2000J Microcomputer Protection and Control Device
Digital protection and measurement control devices are suitable for the protection and measurement control of interval units at voltage levels of 35kV and below. They are equipped with comprehensive protection, measurement, control, automatic backup power switching, and communication monitoring functions, providing a complete solution for the protection and control of substations, power plants, high and low voltage distribution, and plant power systems. This effectively ensures the safe and stable operation of high and low voltage power grids and plant power systems. They can be integrated with other protection and automation devices through communication interfaces to form an automation system. All devices can be installed in a centralized manner on a screen or locally in high and low voltage switch cabinets.
JLSZY-10W type combined transformer
This product is suitable for outdoor AC power systems with a rated frequency of 50Hz and a rated voltage of 6 or 10kV for active and reactive energy metering. This type of energy metering box can be installed separately for safe and easy meter reading. The metering box features high accuracy, lightweight, and is made of outdoor resin casting, making it an ideal device for energy management in the current transformer industry. It combines independent PT and CT into one unit for direct wiring, simplifying the connections, and can be wrapped with heat-shrink tape to prevent electricity theft.
JLSZV-6, 10 type electric energy metering box
This product is suitable for outdoor AC power systems with a rated frequency of 50Hz and a rated voltage of 6 or 10kV for active and reactive energy metering. This type of energy metering box can be installed separately for safe and easy meter reading. The metering box features high accuracy, lightweight, and an outdoor resin encapsulated design, making it an ideal device for energy management in the current transformer industry. The independent PT and CT are encapsulated together for direct output, simplifying wiring, and can be wrapped with heat-shrink tape to prevent electricity theft.
JSZV18-6, 10R type combined voltage transformer ring network cabinet use
The JSZV18-6 and 10R type combined current transformers feature a fully enclosed structure insulated with epoxy resin, suitable for indoor use in power systems with a frequency of 50-60Hz and a rated voltage of 6 or 10KV and below, for three-phase voltage energy measurement, measurement, and relay protection. The newly developed primary winding includes fuse protection for the V-type connected voltage transformer, which has a large creepage distance, low magnetic flux density, and strong anti-resonance capability. The product performance meets the standards of GB/T 20840.1; 3 and IEC6044-2 'Voltage Transformers'. Using a V/V type connection, the fuse is installed inside the primary outgoing terminal for easy and quick replacement. The fuse current is matched with the short-circuit withstand capacity of the transformer, reducing space requirements. In addition to providing a secondary output of 100V for measurement, it can also supply a 220V output terminal for operating mechanisms as a power source, making it widely applicable in any switch cabinet and an ideal product for upgrades.
JDZ9-35 type voltage transformer
This type of current transformer is suitable for power systems with a rated frequency of 50Hz and a rated voltage of 35kV for indoor installations, used for voltage and energy measurement as well as relay protection. When the transformer is excited at the rated voltage, it can withstand an external short circuit for 1 second without damage. Equivalent to UNZ35, JDZ8-35, VKV-35.
LZZBJ9-10 (A, B, C) series current transformers
This type of current transformer features a fully enclosed pillar structure made of epoxy resin, suitable for indoor power lines and equipment with a frequency of 50Hz and a rated voltage of 10kV or below for current and energy measurement and relay protection. It is mainly used in GZS-10 (VD4, VSI) medium voltage switchgear and XGN-10 box-type switchgear. To facilitate installation, there are three primary outgoing line options: A, B, and C.
LZZBJ9-40.5Q and LZZBJ9-35 type current transformers
This type of current transformer is suitable for power systems with a rated frequency of 50Hz and a rated voltage of 40.5kV and below for current and energy measurement as well as relay protection. At the same time, the LZZBJ9-40.5Q type has been developed, which enhances the insulation distance between phases to meet the requirements for use in polluted areas. This product is small in size and light in weight, making it suitable for installation in any position and orientation. Depending on the number of secondary windings and the size of the installation space, there are two types of dimensions available for selection: Figure 1 and Figure 2.
LZZBJ9-35D, 40.5D multi-winding large capacity current transformer
This type of current transformer is an epoxy resin cast pillar-type fully enclosed product, suitable for power systems in indoor installations with a rated frequency of 50Hz-60Hz and a rated voltage of 40.5kV and below, used for electric energy measurement, current measurement, and relay protection. This product complies with the standards IEC 60044-1-2016 and GB/T 20840.2-2014 'Current Transformers'. With the transition to electrical intelligence and networking, especially in substations where current transformers have multiple secondary circuits and protections, it not only requires self-differential protection but also needs to cooperate with upper and lower level differential protection to form multiple interlocking protections, as well as meet the demand for large capacity of secondary equipment. This product can combine 4-6 secondary windings, achieving a conventional capacity of 2-3 times when using 4 secondary windings. It features a small size, lightweight, suitable for arrangement in any position and direction, and requires no special maintenance, only regular cleaning of surface dirt.
DBV-12[VS1] indoor high voltage vacuum circuit breaker
The DBV-12(VS1) indoor high-voltage vacuum circuit breaker is a three-phase AC device operating at 50Hz, with a rated voltage of 7.2-12 kilovolts for indoor high-voltage switchgear. The circuit breaker complies with China's national standards GB1984--2014 "AC High Voltage Circuit Breakers", JB3855-1996 "3.6-40.5kV Indoor AC High Voltage Vacuum Circuit Breakers", DL403-91 "Technical Conditions for Ordering Indoor High Voltage Vacuum Circuit Breakers of 10-35kV", and relevant IEC60694, IEC62271-100 standards, and features reliable interlocking functions. The DBV-12(VS1) indoor high-voltage vacuum circuit breaker can perform frequent operations, with capabilities for multiple openings and rapid reclosing. The DBV-12(VS1) indoor high-voltage vacuum circuit breaker is designed with a front and rear assembly structure, allowing it to be used as a fixed installation unit or in combination with a chassis for standalone handcart use.
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