TYD Series 35-1000 Capacitor Voltage Transformer

Product Introduction:The capacitive voltage transformer is mainly used in power frequency electrical systems. It is suitable for outdoor applications with a rated voltage of 35-1000kV and a frequency of 50/60Hz. It is designed for effectively grounded and non-effectively grounded neutral systems to provide voltage signals for electrical measuring instruments, protection, and control devices. Additionally, it can function as a coupling capacitor for power line carrier communication systems.Product Features:Excellent suppression of ferroresonance: Equipped with a fast-saturation damping dev...

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Product Introduction:

The capacitive voltage transformer is mainly used in power frequency electrical systems. It is suitable for outdoor applications with a rated voltage of 35-1000kV and a frequency of 50/60Hz. It is designed for effectively grounded and non-effectively grounded neutral systems to provide voltage signals for electrical measuring instruments, protection, and control devices. Additionally, it can function as a coupling capacitor for power line carrier communication systems.

Product Features:

Excellent suppression of ferroresonance: Equipped with a fast-saturation damping device, it ensures a rapid transient response and reliably dampens ferroresonance. It meets the test requirements for 320 ferroresonance cycles under 0-1.5Un conditions and effectively suppresses ferroresonance within 10 cycles. The secondary voltage peak drops to 5% of the pre-short-circuit peak within 0.02 seconds.

Integrated medium-voltage switch function: Facilitates on-site operation, maintenance, and inspection.

One-piece porcelain bushing with flange casting: Reduces bolt connections, enhances sealing performance, and minimizes the risk of oil leakage.

Easy installation and maintenance: Uses Phoenix terminals for user-friendly wiring.

Corrosion-resistant cast aluminum oil tank: Ensures long-term durability without rusting.

Model	Maximum Equipment Voltage (kV)	Capacitance (pF)	Rated Frequency (Hz)	Rated Power Frequency Withstand Voltage (RMS) (kV)	Rated Lightning Impulse Withstand Voltage (Peak) (BIL) (kV)	Rated Load (VA)
TVD35/√3	40.5	10000-20000	50/60	95	200	GB/IEC 10/30/50/75/100/120/150/200/300 IEEE 0.15V/0.15MWXYZ/0.3MWXYZ/0.6MWXYZ/0.6ZZ/1.2ZZ
TVD66/√3	72.5	10000-20000	50/60	160	350
TVD110/√3	126	10000-20000	50/60	230	550
TVD132/√3	145	10000-20000	50/60	275	650
TVD150/√3	170	4000-10000	50/60	325	750
TVD220/√3	252	5000-10000	50/60	460	1050
TVD275/√3	300	5000-10000	50/60	460	1050
TVD330/√3	363	5000-10000	50/60	510	1175
TVD420/√3	420	5000-10000	50/60	630	1425
TVD500/√3	550	5000-10000	50/60	740	1675
TVD765/√3	765	5000-10000	50/60	975	2100
TVD1000/√3	1100	5000-10000	50/60	1200	2400

TYD Series Capacitor Voltage Transformer – High-Voltage CVT for Measurement, Protection & PLC

TYD series capacitor voltage transformer with one-piece porcelain bushing and cast aluminum tank

The TYD Series Capacitor Voltage Transformer (CVT) is engineered for reliable performance in high-voltage transmission systems ranging from 35kV to 1000kV, operating at 50/60Hz in both effectively and non-effectively grounded networks. Beyond delivering precise voltage signals for metering, protection, and control equipment, it doubles as a coupling capacitor for power line carrier (PLC) communication—enhancing grid intelligence without additional hardware.

Built for demanding outdoor environments, the TYD CVT features a corrosion-resistant cast aluminum oil tank and a one-piece porcelain bushing with integrated flange casting, drastically reducing bolted joints and eliminating common oil leakage points. Its user-friendly Phoenix terminal blocks simplify field wiring, while an integrated medium-voltage switch streamlines on-site maintenance and testing procedures.

Ferroresonance-free high-voltage CVT – rapid damping within 10 cycles ensures system stability during transients
PLC-compatible outdoor voltage transformer – dual-function design supports communication and measurement in one unit
Leak-resistant single-bushing CVT design – monolithic construction enhances sealing and long-term reliability

A standout feature is its advanced fast-saturation damping mechanism, which suppresses ferroresonance under extreme conditions—meeting stringent 320-cycle test protocols and reducing secondary voltage overshoot to just 5% of peak within 20 milliseconds. Compliant with international standards including IEC 61869-4 and IEEE C57.13, the TYD series offers flexible VA ratings (up to 300VA per standard) and withstands lightning impulses up to 2400kV. Ideal for modern smart substations, this CVT combines safety, multifunctionality, and minimal lifecycle maintenance.