Capacitive Voltage Transformer: TYD Capacitive Voltage Transformer can be used in the measurement of voltage and power, relay protection, automatic control, etc. in high voltage and ultra-high voltage power systems, and can also be used as a coupling capacitor in power line carrier communication system. If required, internal accessories and external terminals for harmonic voltage measurement can be provided.

Environmental requirements for use:

Installation and operation place: outdoor type

Elevation: Generally not more than 2000 meters, or up to 4000 meters of high prototype products can be provided according to the order requirements.

Environmental temperature: divided into - 25 ~+45 ~C and - 40 ~+40 ~C, selected by users at the time of ordering.

Wind speed: no more than 42m/s.

Pollution grade:

Grade III pollution (creepage ratio of external insulation (> 25mm/kV);

Class IV contamination (creepage ratio of external insulation (> 31mm/kV). The level of contamination is chosen by the customer at the time of ordering.

Re-icing thickness: no more than 10 mm.

Earthquake intensity: not more than 8 degrees. According to user requirements, products with higher seismic resistance can also be provided.

System rated frequency: 50Hz or 60Hz. It is determined by the user at the time of ordering.

System Grounding Conditions: Effective grounding of neutral point or ineffective grounding of neutral point are determined by users at the time of ordering.

Main technical performance:

Allows long-term operation at any voltage below 1.2 times rated voltage. The neutral-point effective grounding system can run for 30 seconds at 1.5 times rated voltage, and the neutral-point non-effective grounding system can run for 8 hours at 1.9 times rated voltage with tail-injected F.

Capacitance allowable deviation of capacitor divider is +10%-5% of rated value.

 ★电容分压器的介质损失角正切值(20℃)不大于0.001,局部放电量不大于10pc。

 ★爬电比距：最小爬电比距为25mm/kV~31mm/kV，由用户订货时选择。

 ★CVT的一次和二次电压相位关系为减极性，中压变压器各绕组的联接方式为：

Secondary two-winding 1/1/1-12-12

Secondary three-winding 1/1/1/1-12-12-12

Secondary Four-winding 1/1/1/1/1/1-12-12-12

The radio interference level (RIV) of 330-500 kV CVT is less than 500_V. The RIV of products below 200 kV is less than 350_V.

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

(F) refers to the product used in neutral point non-effective grounding system, and in the absence of this letter, for effective grounding system;

G refers to plateau products, H refers to pollution resistance grade III or above, TH refers to hot and humid areas, L refers to products filled with SF6.