Power Distribution Equipment

1. Home
2. Products
3. Electronic & Electrical
4. Power Distribution Equipment

Share us

Neutral grounding resistors

MRD-BJ

Send Inquiry

Description

B.a Technical Specifications

Operation voltage: up to 110kV line to line systems
Rated current (A): up to 2000
Ambient temperature :<55
Resistance alloy: stainless steel
Protection degree: IP23(outdoor) and others
Standards: IEEE32, IEC60137, IEC60298, IEC60273, IEC60071, IEC60060

C. b
2mm hot dip galvanized steel enclosure
Stainless steel or aluminum enclosures 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

B.c Options

Elevated support standard are provided for ground clearance and safety
Specially designed units for hazardous and extreme locations
Stainless steel or aluminum enclosures on demand
Installation of voltage transformers
Installation of protection relays
Porcelain entrance bushings can be mounted on top or on the side of Neutral grounding resistor
Grounding transformer installation
Motorized or manual single pole disconnector switches, load bank switches, surge arresters and heaters in the Neutral Grounding Resistors

C. TESTS
C.a. Routine tests
Measurement of insulation resistance between enclosure and resistor
Withstand test of dielectric strength at network frequency for one minute
Measurement of total DC resistance
Insulation test or resistor blocks
Galvanization thickness test
Paint thickness test
C.b Type Test (on demand)
Temperature rise test
Protection degree test
Impulse voltage test
Measurement of AC resistance
Seismic test

D. 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)
Special options (if applicable)

Read More