HST-1.5N Medium / Low Voltage Detector

HASEGAWA HST-1.5N is an AC/DC voltage detector with an FRP insulated stick that works on both alternating and direct current. It checks for voltage on AC and DC 600 V – 7000 V systems, which makes it stand out on DC systems where AC-only detectors fall short. The rugged, lightweight FRP stick, with a main body of approx. 340 g, is easy to carry on site.

DC systems such as DC 1500 V and AC installations up to 6.6 kV fall within the same range. HASEGAWA Türkiye, the official distributor in Türkiye, supplies the Japanese-made HST-1.5N as a genuine HASEGAWA product.

Where is it used?

• DC traction power systems: Checks on DC 750 V and DC 1500 V busbars, circuit breakers and feeder outputs at rail traction substations.
• Solar power plants: Pre-maintenance voltage checks on DC 1000 V – 1500 V string combiner boxes and inverter DC inputs.
• Industrial DC installations: Equipment supplied with direct current, such as electrolysis, DC motor drives and rectifier outputs.
• AC medium-voltage motors: 3.3 kV and 6–6.6 kV motor feeder cubicles and cable terminal boxes.

There are also models designed for railway-specific applications such as catenary and third rail; for these, see the railway products category.

HST-1.5N or HSE-7G?

	HST-1.5N	HSE-7G
Current type	AC and DC	AC only
Operating range	600 V – 7000 V	60 V – 7000 V
Dielectric strength	AC 14000 V, 5 minutes	20 kV, 1 minute
Battery and continuous operation	2 × LR44, 4 hours	2 × LR44, 3 hours
Weight	Approx. 340 g (main body)	Approx. 55 g

If the system you will check carries direct current, the HST-1.5N is the choice. If you work on AC networks only and also need to see voltages below 600 V, the HSE-7G is more suitable.

Technical specifications

• Operating voltage: AC 600 V – 7000 V and DC 600 V – 7000 V
• Frequency: 50/60 Hz
• Dielectric strength: AC 14000 V for 5 minutes between contact tip and earth terminal
• Leakage current: 1 mA or less in the withstand test
• Battery: 2 × LR44 (1.5 V); 4 hours continuous operation
• Operating temperature: −10 °C … +40 °C
• Weight: approx. 340 g (main body only); FRP insulated stick

Limits of use and safety

The lower limit of the HST-1.5N is 600 V; on 230/400 V low-voltage installations it may give no indication even when voltage is present. Low voltage detectors must be used on these systems. The detector must not be used on AC or DC systems above 7000 V.

On DC systems, capacitor banks and long cables can retain a charge even after disconnection. After checking with the detector, discharge and earth with a discharge stick where necessary. Before use, confirm that the detector works; the stick must be clean and dry, and insulating gloves and PPE must be used. For teams working on railway sites, our article on voltage testing on catenary lines offers further information.

Why buy from HASEGAWA Türkiye?

• We guide your AC/DC detector selection by voltage level for solar, rail and industrial DC installations
• We suggest an equipment list that complements the HST-1.5N with a discharge stick and a low voltage detector
• Same-day quotation on business days, with a commercial invoice, for operators, maintenance firms and contractors