High Voltage Test Equipment

Insulation, Hipot, and Partial Discharge Testing for Power Transmission Systems

High voltage test equipment verifies the integrity of insulation, cables, and protective devices at the elevated voltages found in power transmission and distribution systems, from handheld live-line indicators through to substation-grade VLF and resonance hipot test systems.

This range covers AC/DC and VLF hipot testers, DC high voltage generators, insulation resistance testers up to 20kV, partial discharge detectors, lightning arrester and zinc oxide arrester testers, dielectric loss (tan delta) testers, and high/low voltage clamp meters for transmission and distribution system measurement.

MEWOI616A Insulation Resistance Tester — High Voltage Test Equipment

MEWOI616A High Voltage 20KV Insulation Resistance Tester

Insulation Resistance Testers

DC megohmmeters spanning general-purpose 1000V testing through to high-voltage cable and switchgear insulation checks.

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Model	Key Specification
MEWOI 15kV/20kV Insulation Tester	15kV/20kV DC test voltage	Enquire
MEWOI 5kV/10kV Insulation Tester	5kV/10kV DC test voltage	Enquire
MEWOI 1000V/2500V Insulation Tester	1000V/2500V DC test voltage	Enquire

AC/DC Hipot Testers & HV Generators

Withstand voltage testing and DC high voltage generation for dielectric strength verification.

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Model	Key Specification
MEWOI616A	Up to 20kV AC/DC	Enquire
MEWOI AC/DC Hipot Tester Series	AC and DC hipot output	Enquire
MEWOI VF Resonance AC Hipot Tester	Variable frequency resonance method	View
MEWOI DC High Voltage Generator	DC high voltage output	View

VLF & Dielectric Loss Testing

Very-low-frequency withstand testing and tan-delta dielectric loss measurement for cable diagnostics.

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Model	Key Specification
MEWOI VLF Hipot Tester Series	0.1Hz VLF frequency	Enquire
MEWOI Dielectric Loss Tester	Tan delta and capacitance measurement	View

MEWOI1500D Three Clamp Wireless High Voltage Clamp Meter

High/Low Voltage Clamp Meters

Non-contact current measurement across distribution to EHV transmission voltage levels.

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Model	Key Specification
MEWOI1500 Series	EHV/HV transmission measurement	Enquire
MEWOI1200 Series	MV distribution measurement	Enquire
MEWOI1100 Series	Distribution-level clamp meter	Enquire
MEWOI1000 Series	HV conductor current measurement	Enquire

MEWOI1100D Wireless Zinc Oxide Arrester Leakage Tester

Arrester & Surge Protection Testing

Verifies and counts surge events on lightning arresters and surge protection devices.

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Model	Key Specification
MEWOI Lightning Arrester	MOV zinc oxide type	View
MEWOI Zinc Oxide Arrester Tester	IR, IT, power loss measurement	View
MEWOI Surge Counter / Surge Simulator	Surge event counting and pulse simulation	View

MEWOI-JYZ-HW Overhead Live Line Fault Indicator

Live Line & Fault Detection

Detects live conductors and fault current, plus non-invasive partial discharge detection on HV assets.

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Model	Key Specification
MEWOI Live Line Fault Indicator	Fault current detection	View
MEWOI Overhead Live Line Indicator	Voltage-sensing live line indicator	View
MEWOI Partial Discharge Detector	HV cables, switchgear, transformers, GIS	View

MEWOI-YM3200 Insulator Salt Density Tester

Insulator & Electroscope Testing

Contamination assessment for outdoor insulators and non-contact HV presence detection.

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Model	Key Specification
MEWOI Insulator Salt Density Tester	ESDD/NSDD measurement, IEC 60815	View
MEWOI High Voltage Electroscope Series	MEWOI1860/1870/1880 series	Enquire

Live-Line Access & Accessories

Insulated switching sticks and supporting leads/connectors for live-line work.

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Model	Key Specification
MEWOI 10-500KV Triangle Hot Stick	10kV–500kV live-line switching	View
MEWOI Special Test Leads and Accessories	Leads, clips, connection accessories	View

High Voltage Test Equipment

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