33kv Three Phase Grounding Cluster – High Voltage Electrical Earthing Device

33kV Three Phase Grounding Cluster

Product Description：

The 33kV Three Phase Grounding Cluster is a high-voltage electrical earthing device designed to provide a secure temporary ground connection during maintenance of 33kV distribution lines and substation equipment. It integrates insulated grounding rods, heavy-duty clamps, and a high-conductivity copper grounding lead to ensure reliable short-circuit and earthing protection. The cluster helps maintain worker safety by rapidly discharging fault currents and preventing accidental energization. With its durable insulation, corrosion-resistant components, and ergonomic operating structure, it is widely used in power companies, industrial distribution systems, and high-voltage field maintenance.

Product Advantages：

1. High-strength insulated conductors with excellent voltage resistance and aging resistance.

2. Superior electrical conductivity with low contact resistance ensures reliable grounding.

3. Compact design allows for easy installation and removal, improving work efficiency.

4. Equipped with high-quality clamps offering strong grip and compatibility with various busbars.

5. Manufactured in strict accordance with power industry safety standards for reliable quality. 
   

Application Scenarios：

1. 33kV Overhead Distribution Line Maintenance：Before any maintenance on the conductors, the grounding cluster is attached to all three phases using insulated operating rods. The grounding lead is then connected to an earthing rod or ground terminal, creating a secure short-circuit path. This ensures operator safety during tasks such as replacing insulators, tightening hardware, or correcting conductor sag.

2. Pole-Top Equipment Work (Crossarms, Fittings, Jumpers)：Before climbing the pole, the technician installs the three-phase grounding clamps to eliminate induced voltage and accidental energization. This grounding setup protects workers while repairing crossarms, refurbishing jumpers, replacing connectors, or reinforcing aging fittings.

3. Substation Busbars and Disconnect Switch Maintenance：When servicing 33kV busbars, disconnect switches, or breaker terminals, the grounding cluster is clamped to the three-phase terminals and then linked to the ground bar of the station. This prevents hazardous induced voltages during diagnostic tests, mechanical adjustments, or cleaning operations.

4. Substation Busbars and Disconnect Switch Maintenance：When servicing 33kV busbars, disconnect switches, or breaker terminals, the grounding cluster is clamped to the three-phase terminals and then linked to the ground bar of the station. This prevents hazardous induced voltages during diagnostic tests, mechanical adjustments, or cleaning operations.

5. Industrial High-Voltage Equipment Servicing (Transformers, Motors)：During maintenance of transformers or large high-voltage motors, the grounding cluster is used to short-circuit the three-phase terminals and connect them directly to the grounding system. This provides a stable protective path that blocks unexpected energization and eliminates residual or induced voltages.
   

Quality Assurance：

Each grounding cluster undergoes high-voltage withstand testing, conductor resistance measurement, clamp force testing, and insulation inspection. All materials comply with ASTM and national safety standards for high-voltage earthing equipment.

FAQ：

Q1: How should the operating rods be maintained?

A1: Regular inspections should be conducted to check for surface damage, moisture ingress, and mechanical integrity. After use, clean the rod with a dry cloth and store it in a dry, ventilated area away from direct sunlight.

Q2: Can the operating rods be used in wet conditions?

A2: Yes, our operating rods are designed with moisture-resistant features. However, it’s essential to ensure that the rod is dry before use and to follow all safety protocols during operation in wet environments.