General Description

 

Neutral grounding resistors Our company manufactures can be used for indoor and outdoor and the neutral point is connected with a porcelain bushing or with a high voltage cable from the bottom, top or side. The most common protection degree preferred for Neutral Grounding Resistors is IP23 as it allows the resistor elements to cool easier and they can be used both at sea shores and deserts because the resistor elements are completely stainless steel and does not affected by extreme conditions. MINGRUI provides complete technical assistance in order to meet your specifications or site conditions. 

 

Technical Specifications

 

Operation voltage: up to 110kV line to line system

 

Rated current(A): up to 2000

 

Ambient temperature: less than 55 centigrade

 

Resistance alloy: Stainless steel

 

Protection degree: IP23(Outdoor) and others

 

Features

 

2mm hot dip galvanized steel enclosure

 

Stainless steel or aluminum enclosure are available on demand

 

Typically, RAL7032 paint for enclosure (other colors are available on demand)

 

Solid top cover sloped to prevent water accumulation

 

Custom made lifting eye bolts for securing lifting

 

Front cover for easy access to connection and inspection doors available on demand

 

Corrosion resistant stainless steel nameplate

Options

 

Elevated support standard are provided for ground clearance and safety

 

Specially designed units for hazardous and extreme locations

 

Stainless steel or aluminum enclosure on demand 

 

Installation of voltage transformer

 

Installation of protection relays

 

Porcelain entrance bushing can be mounted on top or on the side of Neutral Grounding Resistor

 

Grounding transformer installation

 

Motorized or manual single pole disconnector switches, load banks switches, surge arresters and heaters in the neutral grounding resistors. 

 

 

Selection Details

 

System voltage

 

Line to neutral voltage

 

Desired current rating

 

Desired resistance level

 

Maximum time ON(seconds)

 

Bushing entry or cable entry

 

Current transformer ratio (if applicable)

 

Disconnector switch (if applicable)