IP65 Explosion-proof Slip Ring with Large Inner Diameter 195 mm 2 Groups of 100Mbps Network Signals
Large hole diameter 190mm Explosion-proof slip ring Explosion-proof rating: Ex d IIB T4 Gb
Available for custom, standard ID 3-500 mm, OD 10-800 mm
Designed for explosive risk scenarios, this explosion-proof slip ring delivers reliable 360° rotational power and signal transmission with robust safety features. Certified to Ex d IIB T4 Gb, it combines rigorous explosion protection with high-performance engineering.
Key Specifications:
- Dimensions: Inner Diameter 195mm, Outer Diameter 320mm
- Signals: 2 groups of 100Mbps network transmission
- Channels: 15 total (5 power circuits × 20A; 10 signal circuits × 5A, including 2 shielded circuits for network signals)
- Voltage: 0~440VAC/240VDC
- Insulation Resistance: 1000MΩ (power circuits @1000VDC); 500MΩ (signals @500VDC)
- Dielectric Strength: 1500VAC/50Hz (60s, 1mA for power circuits)
- Dynamic Resistance Variation: <10mΩ
- Operating Speed: 0~100rpm
- Environment: -20℃~+80℃, <70% humidity
- Protection: IP65 rated; Q235A structural material with noble metal (gold) contacts for low-loss connectivity
- Additional Feature: Waterproof metal locking connector for enhanced sealing.
Ideal for industrial equipment requiring safe, stable rotation in explosive atmospheres, this slip ring ensures uninterrupted performance even in harsh conditions.
• Typical Applications:
1. Petroleum, Natural Gas, and Chemical Industry
Risk Characteristics: The environment often contains flammable gases (e.g., methane, hydrogen), volatile liquids (e.g., gasoline, benzene), or combustible dusts. Static electricity and electric sparks can easily trigger explosions.
Typical Equipment:
- •Rotating equipment in refineries/chemical plants: Such as reactor agitators, rotary joints for pipelines, stirring shafts for storage tanks, and centrifuges. Slip rings need to transmit motor power (e.g., 220VAC/380VAC), sensor signals (e.g., temperature and pressure monitoring), and control commands, while complying with explosion-proof certifications (e.g., Ex d IIB T4 Gb).
- •Offshore oil and gas platforms: Rotating drill pipe drive systems on offshore drilling platforms and rotary connectors for oil/gas pipelines. These require resistance to salt spray and humidity, and compliance with marine environment explosion-proof standards (e.g., Ex d I M2).
2. Coal Mines and Mining Industry
Risk Characteristics: Underground gas (primarily methane), coal dust, and air mixtures can form explosive gases. Electric sparks generated during equipment operation pose significant hazards.
Typical Equipment:
- •Underground rotating machinery in coal mines: Such as hoist drums for mining, fan impellers, and rotary joints in the cutting section of coal miners. Slip rings must transmit high currents (e.g., motor power), encoder signals (for speed control), and feature high protection ratings (IP65/IP67) to withstand the damp and dusty underground environment.
- •Mining crushing/screening equipment: Rotary shafts for vibrating screens and rotating electrical connections for crusher rotor bearings. These require impact resistance and wear resistance to prevent equipment downtime or spark-induced gas ignition due to slip ring failures.
• Product Naming Description:
(1)Product type: DH—electric slip ring
(2)Installation method: K—through hole
(3)Through hole product bore diameter 195 mm F—Explosion-Proof
(4)Total circuits:15 circuits
(5)The rated current or it will not be marked if it passes through a different rated current for the circuits.
(6) Identify number: –XXX; In order to distinguish different specifications of the same product model, the identification number is added after the name.
For example: DHK080-24 has two sets of products with the same name, the cable length, connector, installation method, etc. are different, you can add the identification number: DHK080-24-002; if there are more of this model in the future, and so on -003 , -004, etc.
