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TYD-126 capacitive voltage transformer
Hits:739Timer:2019-09-06
TYD-110 Capacitor Voltage Transformer: TYD Capacitor Voltage Transformer can be used for voltage and power measurement, relay protection, automatic control, etc. in high voltage and ultra high voltage power systems, and can also be used as a coupling capacitor for power line carrier. Communication Systems. Internal accessories and external terminals for harmonic voltage measurement are available upon request.
Environmental requirements:
Installation and operation site: outdoor type
Altitude: generally does not exceed 2000 meters, and can also provide high prototype products up to 4000 meters according to the order requirements.
Ambient temperature: divided into -25~+45°C and -40~+40°C, which are selected by the user when ordering.
Wind speed: no more than 42m/s.
Pollution level:
Class III pollution (outer insulation creepage ratio ≥25mm/kV);
Class IV contamination (outer insulation creepage ratio ≥31mm/kV). The level of contamination is selected by the customer when ordering.
Thick ice thickness: no more than 10mm.
Earthquake intensity: no more than 8 degrees. According to user requirements, products with higher seismic resistance are also available.
System rated frequency: 50Hz or 60Hz. Determined by the user at the time of ordering.
System grounding conditions: The neutral point is effectively grounded or the neutral point is not effectively grounded, which is determined by the user when ordering.
Main technical performance:
★ Allow long-term operation at any voltage below 1.2 times the rated voltage. The neutral point effective grounding system can run for 30s at 1.5 times the rated voltage with the CVT. The neutral point non-effective grounding system can run for 8 hours at 1.9 times the rated voltage with the CVT (with the endnote F in the model).
★ Capacitor divider's capacitance tolerance is +10%~-5% of rated value.
★The dielectric loss tangent of the capacitive divider (20 °C) is not more than 0.001, and the partial discharge is not more than 10pc.
★ creepage ratio: The minimum creepage ratio is 25mm/kV~31mm/kV, which is selected by the user when ordering.
★ The primary and secondary voltage phase relationship of CVT is the polarity reduction. The connection mode of each winding of medium voltage transformer is:
Secondary two windings 1/1/1-12-12
Secondary three windings 1/1/1/1-12-12-12
Secondary four windings 1/1/1/1/1-12-12-12-12
★ The radio interference level (RIV) of 330~500kVCVT is ≤500υV. The RIV of products of 200kV and below is less than 350υV.
TYD35/√3-0.01HF TYD35/√3-0.02HF TYD66/√3-0.01HF
TYD66/√3-0.02HF TYD110/√3-0.01HF TYD110/√3-0.02HF
TYD220/√3-0.01HF TYD220/√3-0.02HF
(Where: F refers to the product used for the neutral point non-effective grounding system, and is used for the effective grounding system without this letter;
G refers to high-prototype products, H refers to pollution-resistant grade III or above; TH refers to hot and humid areas, L refers to products filled with SF6)
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