6kv/6.6kv/100A/200A Transformer Neutral Grounding | RFQ Sourcing Details
Cable Trays · Quote on request
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Product specs
Buyer's Digest
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Original product description
A neutral grounding resistor is composed of enclosure, resistors, disconnecting switch, CT, heater, lightning arrester, etc. The primary purpose of a Neutral Grounding Resistor (NGR) is to limit the fault current already present in a single line to ground fault.
That is why NGRs are mostly employed in low and medium voltage (LV and MV) distribution networks to ensure generators and transformers remain protected from damaging currents in the event of an earth fault. At present, China has a lot of power distribution network using a neutral point resistance grounding runs.
After installing the neutral grounding resistor cabinet, when the occurrence of non-metallic grounded affected ground resistance, and the current flowing through the ground than the neutral point earthed metallic significantly reduced, while the sound phase voltage rises too significantly reduced, zero- sequence voltage value is about half of the single-phase metallic grounded.
Thus, the use of resistance grounded neutral point, single-phase ground can be reduced when transient over-voltage and over-voltage arc grounding eliminate some resonance over-voltage, and can use a simple protection devices quickly select the fault line, cut point of failure.
Specification The technical parameters of the form are for reference only. Customized products can consult online customer service!
Item Unit Value System Voltage kV 0.4, 3.3, 4.16, 6.3, 6.6, 10.5, 11, 24, 33, 35, customer specified Rated Voltage kV 0.4, 3.3, 4.16, 6.3, 6.6, 10.5, 11, 24, 33, 35 /√3 Rated Frequency Hz 50 / 60 Short-time Current A 50, 100, 200, 300, 500, 800, 1000, 1300, 1600, etc Duration of Fault Current s 10, 30, etc Short-time Current Temperature Rise K 700, 760 Resistance Value (25 ºC) Ω 12, 15, 18, 40, 44, 110, etc ± 5% Resistance Element Material Stainless steel 304 Resistivity μ.
Ω .m 0.73 Temperature Coefficient of Resistor Ω / ºC 1.05 × 10 -3 Melting point of resistance material °C 1350~1500 Power frequency withstand voltage (1min) kV as per design Lightning impulse withstand voltage kV as per design Ingress Protection Outdoor, Max.
IP44 with canopy;Or Indoor, IP2X, with flat top Cable Entry and Out Incoming: bottom;Outgoing: bottom Enclosure color Spray RAL7035 Enclosure type Cold rolled steel plate Operating life year 20 weight kg About 140(as per design) Other than this model we proudly offer a diverse array of other instrument transformers.
Our extensive selection caters to the varied needs of our esteemed clien y. When placing order, please provide the following technical parameters 1. kV rated voltage: 2. rated voltage;3. Combination of three levels, accurate phase and accurate;4, rated output, and the corresponding accurate level (VA).
6kv | Applications and Buyer Notes
6kv is organized as a sourcing-ready Cable Trays reference. The page combines visible product or company data with structured procurement cues so buyers can compare application fit, specifications, quantity, quality requirements and lead-time questions before
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- color
- Spray RAL7035 EnclosureBased on visible page data; confirm exact value in the RFQ.
- Origin
- Wenzhou, ZhejiangBased on visible page data; confirm exact value in the RFQ.
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