CHZ7-35KV/606 ABB Contact Box
Product Overview
The CHZ7-35KV/606 ABB two-way contact box is an insulating connection device designed specifically for high-voltage switchgear. It is manufactured using an epoxy resin APG (Automatic Pressure Gelation) process molding structure, and is primarily applied in 35KV-class high-voltage power distribution switchgear. The device provides bidirectional electrical circuit transition connections and insulation isolation, delivering reliable insulation protection for the switching and connection of high-voltage circuits, and ensuring the safe and stable operation of power systems.
Technical Parameters
| Parameter | Specification |
|---|---|
| Rated Voltage | 35KV |
| Rated Current | 630A–1250A |
| Power Frequency Withstand Voltage | 95KV / 1 min |
| Lightning Impulse Withstand Voltage | 185KV |
| Operating Temperature Range | -40°C to +70°C |
| Protection Rating | IP67 |
| Mechanical Service Life | 2,000 operations |
| Materials | Epoxy resin housing + copper alloy terminals + stainless steel contacts |
Application Scope
This two-way contact box is suitable for use in 35KV-class withdrawable (truck-type) switchgear, centrally-mounted switchgear (e.g., KYN61-40.5 type switchgear), and other high-voltage power distribution equipment. It is commonly found in industrial substations, large high-rise building power distribution rooms, power dispatch centers, and industrial and mining enterprise power distribution systems, serving as an insulating transition component for bidirectional high-voltage circuit connections to achieve reliable interconnection and insulation isolation between two electrical circuits.
Operating Conditions
The installation altitude shall not exceed 1000 m;
Ambient air temperature range: -40°C to +70°C; relative humidity shall not exceed 95% at 25°C;
The installation site shall be free of gases, vapors, dust, and other explosive or corrosive media that could significantly impair the insulating performance of the contact box;
The device shall be installed in locations free from severe vibration and mechanical shock to ensure structural integrity;
The seismic intensity at the installation site shall not exceed Intensity 8, and wind speed shall not exceed 34 m/s.
Product Features
Superior Insulation Performance: Formed using the epoxy resin APG process, the device provides excellent insulation and sealing properties, effectively isolating high-voltage circuits, preventing ingress of external dust and moisture, ensuring reliability of electrical connections, and withstanding high-voltage impulses;
Reliable Conductivity: Terminals are made of copper alloy with tin-plating or silver-plating treatment; contacts are made of stainless steel or copper, providing excellent electrical conductivity, corrosion resistance, and wear resistance, ensuring stable electrical signal transmission and minimizing resistive heating losses;
Robust and Durable Construction: The monolithic molded structure offers high mechanical strength, capable of withstanding both mechanical and electrical stresses within the switchgear, adapting to the demanding operating conditions of high-voltage power distribution systems, with an extended service life;
Easy Installation: Standardized mounting dimensions compatible with ABB series 35KV high-voltage switchgear, facilitating on-site installation and replacement;
Strong Environmental Adaptability: Wide operating temperature range design capable of withstanding extreme cold and high-temperature environments; protection rating IP67 provides excellent dust and water ingress protection, suitable for a wide variety of complex power distribution environments.
Product Photo
