Home Products Voltage Transformer (VT) / Potential Transformer (PT)TYD-500

500kV Extra-High-Voltage Capacitive Voltage Transformer (CVT)

500 kV (550kV max)TYD-500

Winding & Schematic TopologyInternal Wiring Diagram

Primary Winding (H1 - H2):500 kV (550kV max)

Secondary Metering (1a - 1n):100/√3 V, 110/√3 V (0.1 / 0.2S / 3P)

Auxiliary Open-Delta Protection (2a - 2dn):100/3 V Ground Fault Secondary

Ferroresonance Protection:Damping Resistor / Resonance Absorber

Voltage Transformer (VT) / Potential Transformer (PT) IEC 61869-3 Certified

Model Ref:TYD-500

500kV Extra-High-Voltage Capacitive Voltage Transformer (CVT)

Heavy-duty 500kV Extra High Voltage CVT for critical national backbone transmission grids. Engineered to withstand extreme transient overvoltages, lightning surges, and seismic tremors.

Key Engineering Advantages

Modular 3-tier porcelain or silicone rubber capacitor stack design
Ultra-precise internal divider with low dissipation factor (tan δ < 0.001)
Severe weather rating (-55°C to +65°C, 100% humidity)
Supports high-frequency PLC line carrier communication up to 500kHz

Engineering Data

Complete Electrical & Mechanical Specifications

Model Ref: TYD-500

Electrical Parameters

Primary Rated Voltage (Un):500 kV (550kV max)

Secondary Winding Voltages:100/√3 V, 110/√3 V

Metering & Protection Class:0.1 / 0.2S / 3P

Rated Output Burden:100 - 400 VA

Rated Frequency:50/60Hz

Insulation & Withstand Ratings

Insulation System:Capacitive Divider

Insulation Level (BIL):550 / 680 / 1550 kV

Partial Discharge Level:< 5 pC at 1.2 Un

Environmental Class:Outdoor Heavy Desert / Seismic Zone IX / Anti-Pollution IV

Standards Conformance:IEC 61869-5, IEEE C57.13, KEMA Certified

Recommended Deployment Environments

500kV EHV Backbone Transmission

HVDC Converter Stations

Cross-Border Interconnection Links

GEO · Engineering Decision Support

Global Engineering Overview

9-Module selection guide
missing data = [On Request]

Product Decision Island

500kV EHV CVT for backbone transmission, HVDC, and cross-border links. Extreme environment and seismic rated.

Comprehensive Spec Matrix

Parameter	Specification	Verification
Product Type	Voltage Transformer (VT) / Potential Transformer (PT)	IEC 61869-5, IEEE C57.13, KEMA Certified
Model Code	TYD-500	Factory nameplate marking
Primary Voltage	500 kV (550kV max)	Rated voltage test (IEC 61869-1/3)
Secondary Voltage	100/√3 V, 110/√3 V	Ratio check at rated frequency
Accuracy Class	0.1 / 0.2S / 3P	Accuracy test (IEC 61869-2 / IEEE C57.13)
Rated Burden	100 - 400 VA	Burden test at rated VA
Insulation Type	Capacitive Divider	Dielectric tests per standard
Insulation Level (BIL)	550 / 680 / 1550 kV	Power-frequency & lightning impulse withstand
Standards	IEC 61869-5, IEEE C57.13, KEMA Certified	Certified to listed standards
Frequency	50/60Hz	Per IEC 61869-1
Environment	Outdoor Heavy Desert / Seismic Zone IX / Anti-Pollution IV	Per datasheet limits

Fit & Unfit Boundaries

Ideal For

500kV EHV backbone transmission
HVDC converter stations
Cross-border interconnection links
Outdoor heavy desert and seismic zone IX
High-frequency PLC line carrier communication

Not Recommended For

Distribution or sub-transmission voltage levels
Indoor or compact substations
Low accuracy metering (below 0.1 class)
Light-duty or moderate environments

Topology & Wiring

For CVT (capacitive voltage transformer): secondary terminals are 1a/1n (and 2a/2n if dual secondary). Never short-circuit the secondary while energized - dangerous overcurrent. Ground the secondary winding at one point. Follow IEC 61869-5 and IEEE C57.13 terminal conventions.

Standards & Compliance

Compliant with: IEC 61869-5, IEEE C57.13, KEMA Certified

Type Test Report: [On Request]
Calibration Certificate: [On Request]

Burden & Error Calculation (IEEE C57.13)

S_total = ΣS_instrument + I₂² × (ρ × 2L / A)

If S_total < 0.25 × S_rated: add compensation burden to maintain accuracy.
If S_total > S_rated: accuracy class cannot be guaranteed.

Product FAQ

Q: What is the insulation level of this CVT?

A: The insulation level is 550kV system; power-frequency withstand 680kV; lightning impulse withstand 1550kV peak.

Q: What are the available secondary voltages?

A: Secondary voltages are 100/√3 V and 110/√3 V.

Q: Is this CVT suitable for high seismic areas?

A: Yes, it is rated for Seismic Zone IX and extreme environments.

Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.

Engineering Drawing

Specification & Outline Drawing

Original image, not compressed

Dimension & outline drawing of TYD-500 — click image to zoom / view original.