China 33kv ring main unit price Manufacturer, Supplier, Factory

This circuit breaker is a multifunctional low-voltage protection device designed for distribution systems with AC 50Hz, rated voltage below 400V, and rated current below 63A. It is suitable for industrial, commercial, and civilian power networks. Its core functions integrate security protection, equipment protection, and intelligent monitoring, which can significantly improve the reliability and operation efficiency of the distribution system. Core functional highlights: 1. Safety protection 1) Personal safety assurance: Through high-precision residual current detection technology (RCD), indirect contact protection is provided, effectively reducing the risk of electric shock. 2) Equipment and line protection: Integrated overload and short circuit dual protection mechanism, accurately cutting off fault current, avoiding electrical fires and equipment damage. 2. Intelligent monitoring and early warning 1) Leakage pre-alarm function: Real-time monitoring of residual current in the circuit. When abnormal leakage (such as insulation degradation) is detected, an alarm signal is output through a passive normally open contact (dry contact). It can be linked to SCADA, fire protection system or sound and light alarm device without an external power supply to achieve early warning of faults and ensure power supply continuity. 2) Flexible threshold configuration: supports custom setting of leakage alarm values, adapting to sensitivity requirements of different scenarios (such as 30mA/100mA adjustable). 3. Diversified control ability Line and motor control: suitable for occasional switching operations of distribution lines or intermittent start-stop control of small motors, meeting the requirements of nonfrequent operation scenarios. Typical application scenarios: 1) Key power supply areas: places with high requirements for power continuity, such as data centers and hospital IT systems, have alarm nontrip mechanisms to avoid accidental power outages. 2) Equipment protection: Front-end protection for devices such as frequency converters and outdoor electrical cabinets that are susceptible to electrical leakage or environmental impact. 3) Intelligent operation and maintenance: By connecting to the building management system (BMS) through touch signals, remote monitoring and preventive maintenance can be achieved. Product advantages: 1) High reliability: thermal magnetic double trip structure, balancing overload delay protection and short-circuit instantaneous action characteristics. 2) Flexible expansion: an optional communication module, supporting remote status monitoring and fault diagnosis. 3) Easy installation: Standardized modular design, compatible with mainstream rail installation, suitable for compact distribution boxes. Summary: This circuit breaker is designed with the concept of "warning first, safety oriented", which ensures the safety of personnel and equipment while maximizing the stability of system operation. It is the preferred protective device for modern intelligent distribution systems.

The New Armored Removable AC Metal-Enclosed Switchgear, a testament to advanced switchgear technology, is specifically crafted for three-phase AC power systems with a rated voltage of 35kV. It accommodates rated currents ranging from 630a to 3150a, and operates at a frequency of 50Hz. This cutting-edge equipment not only facilitates the efficient transfer and distribution of electric energy but also offers robust control, protection, and monitoring capabilities for electrical circuits, ensuring optimal performance and reliability.

40.5KV 1600 amp Outdoor high-voltage SF6 circuit breaker is a three-phase AC 50HZ outdoor high-voltage switchgear suitable for the control and protection of 40.5KV transmission and transformation systems. It can also be used as a connecting circuit breaker and a combination of opening and closing devices. The LW8-40.5AG circuit breaker adopts the principle of "thermal expansion+auxiliary blowing" intelligent extinguish arcs, equipped with a CT10 spring operating mechanism. The circuit breaker complies with GB/T1984-2014 "AC High Voltage Circuit Breakers" and meets the requirements of the International Electrotechnical Commission standard IEC62271-100:2001 "High Voltage Switchgear and Control Equipment - Part 100: High Voltage AC Circuit Breakers".

LW8-35 36KV 3150A Outdoor HV SF6 Circuit Breaker is applicable for outdoor 50Hz three-phase HV electric equipment and control & protection of 36kV power distribution & transmission system, as well as measurement and protection via the breaker enclosed current transformer. Breaker is also used for interconnected circuit breakers and switching capacitor banks.

The ZW43-12 series 12kv 630A Outdoor Automatical Vacuum Circuit Breaker are designed for outdoor use, with a rated voltage of 12kV and a frequency of 50Hz. These breakers are highly efficient, handling load currents, overload currents, and short circuit currents in power systems with ease. They are particularly suited for substations, industrial and mining establishments, and urban and rural distribution networks, where they provide protection and control, especially in applications that require frequent operation and automation. These breakers comply with several standards, including GB/T1984 for high-voltage AC circuit breakers, GB/T11022 for high-voltage switchgear and control equipment, and D1402 for AC high-voltage circuit breaker ordering technical conditions. Additionally, the circuit breaker can be paired with a controller to form a coordinated device, enabling remote control, monitoring, communication, and adjustment capabilities.

The 40.5KV 1600A Outdoor high-voltage combination electrical appliances, an outdoor high-voltage electrical appliance, is an efficient solution that combines air insulation with SF6 gas for arc extinguishing. This unit is designed for controlling and protecting three-phase AC 40.5kV transmission and distribution systems, as well as for connecting circuit breakers and operating capacitor banks. Its efficiency makes it ideal for use in urban substations, enterprise substations, and mountain substations with limited land availability, promising to improve your operations.