Megger T22/1 AC High Voltage Test System

Megger T22/1 Overview

The Megger T22/1 is a compact, portable AC high-voltage test system used to carry out dielectric withstand (hipot) testing on switchgear, cables and other low-capacity test objects. Its two-unit design – a lightweight SF6-insulated test transformer and a separate control unit – makes it easy to transport and deploy on site without special handling equipment.

The system delivers a continuously adjustable AC output up to 75 kV RMS, with output current to 13 mA continuous (50 mA for one minute), and the control unit displays test voltage and current (voltage precision 2.5%; in the basic version it is derived from the transformer primary and turns ratio). An optional DC rectifier extends testing to 80 kV DC, making the T22/1 a versatile tool for commissioning and maintaining metal-enclosed high-voltage switchgear and cable systems.

Who the Megger T22/1 is for

The Megger T22/1 is for switchgear commissioning teams, panel builders and HV maintenance contractors who must prove insulation with a real AC withstand voltage, not just a DC insulation-resistance reading. Its 75 kV rms output at 1 kVA suits low-capacitance objects such as metal-enclosed MV switchgear, bushings and insulators, and the two-box design lets a crew carry it on site without lifting gear.

From Megger’s T22/1 datasheet (T22-1_DS_EN_V02):

• 0–75 kV rms; power consumption 1 kVA, 4 kVA short-time (1 min); output current 0–13 mA, 50 mA maximum for 1 min
• Made for AC testing of low-capacity test objects such as metal-enclosed HV switchgear; cable systems are DC-tested with the optional rectifier
• Upgrades: rectifier for 80 kV DC and a second transformer for 150 kV rms balanced to earth
• Control unit T 22/124: 19 kg, 551 × 255 × 380 mm (W × H × D); transformer T 22/12: 29 kg, Ø420 × 560 mm; 230 V, 50/60 Hz supply

As an authorized Megger representative in the UAE, MME also lists insulation testers and the wider Megger range. Many crews run a DC insulation check before the withstand test with the Megger MIT1525/2. For higher-power AC testing see the Megger HPG series; for DC withstand to 25 kV, the Megger HV Tester 25. Megger lists a 100 kV earthing stick as a T22/1 option; see the Megger EST discharge rods.

Megger T22/1 Key Features

What the Megger T22/1 offers a withstand-test crew:

• Portable AC high-voltage test system for dielectric withstand testing
• Continuously adjustable AC output 0–75 kV RMS
• Output current 0–13 mA continuous; up to 50 mA for 1 minute
• Lightweight SF6-insulated test transformer (29 kg)
• Separate control unit with integrated voltage/current metering
• Optional DC rectifier for testing up to 80 kV DC
• Two-unit design for easy on-site deployment

Megger T22/1 Applications

Where engineers put the Megger T22/1 to work:

• Dielectric withstand (hipot) testing of switchgear
• Cable-system withstand testing
• Testing metal-enclosed high-voltage equipment
• Commissioning and maintenance of HV assets

What comes with the Megger T22/1

What Megger includes in the standard T22/1 scope of supply:

• Megger T22/1 test transformer (T22/12)
• Control unit (T22/124)
• Set of T 22/1 connection cables with bag
• SF6 gas filling device
• Secondary current measurement

Megger T22/1 FAQ

What engineers ask before booking a T22/1:

• Can it AC-test long MV cables? Megger specifies it for AC testing of low-capacity objects such as metal-enclosed switchgear. For cable systems it offers DC testing to 80 kV with the optional rectifier.
• How is the test voltage measured? In the basic version the M 402 unit calculates it from the transformer primary and turns ratio. An option measures directly at HV potential.
• Can it reach 150 kV? Yes, with the upgrade that adds a second transformer connected symmetrically to earth.
• What supply does it need? 230 V at 50/60 Hz. It draws 1 kVA continuously and 4 kVA for one minute.

Why buy the Megger T22/1 from MME in the UAE

MME (MOHAMMAD MAHDI Electronics Trading LLC) is an authorized Megger representative serving the UAE and wider Middle East, offering competitive pricing and practical help in specifying the right HV test set. For full technical details, download the datasheet below.

T22/1 Datasheet PdfPDF