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HV EQUIPMENT · INSTRUMENT TRANSFORMERS

HV Instrument Transformers

High-voltage current and voltage transformers for accurate measurement, protection and control in transmission-class electrical systems.

INSTRUMENT TRANSFORMERS / MEASUREMENT INTERFACE
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CURRENT TRANSFORMATION
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VOLTAGE TRANSFORMATION
MEASUREMENT & PROTECTION INTERFACE Functional overview, not a wiring diagram or product rating.
TECHNICAL OVERVIEW

Reliable scaling of current and voltage for protection and metering.

Instrument transformers convert transmission-system current and voltage to standardized values that can be processed safely by meters, protection relays, control devices and recording equipment.

PRODUCT SCOPE

Current and voltage transformer technologies for HV systems.

HV Current Transformers

Oil-paper insulated current transformers supplied in bushing, inverted and tank-type configurations for metering, protection and control.

Up to 550 kV · Up to 5000 A

Capacitive Voltage Transformers

CVTs provide voltage signals for metering, protection and automatic control and can also serve as coupling capacitors for power-line carrier signals.

Transmission and ultra-high-voltage applications

Inductive Voltage Transformers

IVTs transform high-voltage network values to levels suitable for measuring and protection equipment such as relays and recorders.

Metering and protection duty

Selection Basis

Accuracy class, insulation level, burden and protection/metering duty are coordinated around the project requirements.

Project-specific specification

SYSTEM APPLICATION

Measurement and protection interfaces for transmission-class systems.

HV metering systems.

Protection relays and control systems.

Automatic-control and recording equipment.

Power-line carrier coupling applications using CVTs.

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