HLA-2G Voltage Detector Tester

HASEGAWA HLA-2G is a dual-output voltage detector tester designed to verify that voltage detectors are working properly before use. The H terminal produces an AC 1200 V test voltage and the L terminal AC 70 V, so the same unit can check the response of both high-threshold and low-threshold detectors.

Powered by two 9 V batteries, the HLA-2G offers a total operating time of approximately 2 hours and, at 700 g, fits in a field kit bag. Made in Japan by HASEGAWA Electric, it is supplied to business customers as a genuine HASEGAWA product from the official distributor in Türkiye.

How does a voltage detector tester work?

The HLA-2G converts energy from its internal batteries into an alternating test voltage at approximately 55 Hz. When the sensing tip of the detector is brought close to or touched against the relevant terminal, a sound detector should give its warning. If there is no warning, the detector's battery, sensing circuit and indicator must be checked before it is used in the field.

The short-circuit current of the output circuit is limited to 0.5 mA or less, to protect the user in the event of contact during testing. Typical users:

• Distribution and substation teams using detectors in medium-voltage switchgear
• High-voltage maintenance departments at industrial sites
• Safety specialists who periodically check detector inventories

HLA-2G or HLA-1A?

	HLA-1A	HLA-2G	HLA-3
Output voltage	H: AC 400 V, L: AC 100 V	H: AC 1200 V, L: AC 70 V	AC 4000 V ± 15%
Output frequency	55 Hz ± 10 Hz	55 Hz ± 10%	55 Hz ± 10 Hz
Short-circuit current	0.5 mA or less	0.5 mA or less	0.5 mA or less
Battery	4 × LR03 (1.5 V)	2 × 9 V (6R61 or 6F22)	2 × 9 V (6LR61 or 6LF22)
Total operating time	Approx. 1 hour	Approx. 2 hours	Approx. 2 hours
Operating temperature	−10 °C … +50 °C	0 °C … +50 °C	0 °C … +50 °C
Dimensions	65 × 120 × 40 mm	80 × 150 × 50 mm	100 × 200 × 70 mm
Weight	430 g	700 g	Approx. 1200 g (without batteries)

The HLA-2G sits in the middle of the series. For low-voltage detectors where the 400 V and 100 V levels are sufficient, the lighter HLA-1A is recommended; for detectors requiring a 4000 V test voltage, the HLA-3. For detectors used on DC systems, the HLA-N2 DC is a separate option. Share your detector models with us and we can work out together which tester is suitable.

Technical specifications

• Output voltage: H terminal AC 1200 V, L terminal AC 70 V
• Output frequency: 55 Hz ± 10%
• Short-circuit current: 0.5 mA or less
• Operating temperature: 0 °C … +50 °C
• Battery: 2 × 9 V (6R61 or 6F22); total operating time approx. 2 hours
• Dimensions: 80 × 150 × 50 mm
• Weight: 700 g

Limits of use and safety

The HLA-2G does not show that a line is dead; it only confirms that the detector works. The safe sequence is: test the detector on the HLA-2G, check the circuit for voltage, then test the detector again when the job is done. Do not touch the terminals by hand during testing; hold the detector by its insulated handle.

As the operating range starts at 0 °C, keep the unit in a vehicle or a warm place if it will be used outdoors in winter. Removing the batteries when the unit will not be used for a long time reduces the risk of leakage. For detectors suitable for medium voltage see the medium / low-voltage detectors category, and for good testing practice read our article on periodic inspection.

Why buy from HASEGAWA Türkiye?

• We check HLA-2G compatibility model by model with the detectors you use in switchgear and substations
• Pre-use information on the 9 V battery type and test routine
• Project-based pricing and a commercial invoice for purchases across your maintenance teams