Voltage Detecting Insulator (VDI)

Reliable Voltage Detection for Safer Electrical Networks Engineered with precision epoxy resin technology, VDI ensures safe and accurate voltage presence monitoring in medium- and high-voltage systems.

Voltage Detecting Insulator (VDI)

Overview

The Voltage Detecting Insulator (VDI) is a critical component designed for accurate voltage presence detection in power and distribution networks. Manufactured using a high-quality epoxy resin system with a pressure gelation process, VDI combines high mechanical strength, electrical reliability, and compliance with IEC 61243-5 standards. Its integrated capacitor and phase comparator capabilities make it ideal for safe interlocking, SCADA signaling, and fault monitoring.

Key Features

IEC 61243-5 Compliant:

Certified for voltage detection in high-, medium-, and low-voltage switchgear.

Capacitor Voltage Divider:

Supports systems from 3.3 kV to 36 kV for precise detection.

Integrated Phase Comparator:

3-phase devices as per LRM and HR specifications.

High-Quality Construction:

Epoxy resin system manufactured via pressure gelation for superior strength and durability.

Surge Protection:

Built-in surge arrestor or MOV for high-voltage protection.

Environmental Durability:

Operates reliably from 0°C to +55°C and 10% to 85% RH.

Custom Engineering:

Tailored designs based on customer specifications or standard configurations.

Applications

Voltage Presence Detection: Safely determines voltage status in power and distribution networks.

Line Condition Monitoring: Enables accurate system control and diagnostics.

SCADA Signaling: Facilitates remote indication and monitoring in automated systems.

Fault Detection: Assists in early identification of electrical faults for maintenance.

Safety & Interlocking: Prevents unsafe operations during maintenance or switching.

Automatic Supply Changeover: Minimizes changeover time in power networks.

Technical Specifications

Parameter	Specification
System Voltage	3.3 kV to 36 kV
Capacitance	15 pF to 600 pF
Material	Epoxy resin with pressure gelation process
Enclosure	Black ABS with MS powder-coated chassis
Environmental Conditions	0°C to +55°C, 10% RH to 85% RH
Compliance	IS / IEC standards
Surge Protection	Surge arrestor or MOV
Customization	Available as per client-specific requirements or standard designs