The High Voltage Detector Tester DL-740 (10 kV) is a professional-grade instrument designed for fast, accurate, and safe detection of AC high voltage in medium-voltage electrical systems. It is ideal for use by electrical technicians, maintenance teams, linemen, and substation operators.
The DL-740 provides clear visual and audible indications to confirm the presence or absence of voltage before grounding or maintenance work, significantly enhancing workplace safety in industrial and utility environments.
Detects AC high voltage up to 10 kV
Non-contact detection using electric field / capacitive sensing technology
Bright LED visual indicators with integrated audible alarm
High-insulation, durable construction for professional use
Compatible with telescopic insulated hot sticks
Battery-powered for portable field operation
Weather-resistant housing for indoor and outdoor use
| Specification | Details |
|---|---|
| Model | DL-740 |
| Voltage Detection Range | Up to 10 kV (AC) |
| Detection Method | Capacitive / Electric Field Sensing |
| Indicators | LED (Visual) + Buzzer (Audible) |
| Power Supply | Battery operated |
| Operating Environment | Indoor / Outdoor |
| Applications | Substations, overhead lines, transformers, switchgear |
| Safety Class | Suitable for medium-voltage safety verification |
Power distribution and transmission substations
Overhead line maintenance
Transformer and switchgear voltage verification
Safety checks prior to maintenance or fault diagnostics
High Voltage Detector Tester DL-740 – 10 kV
Professional 10 kV high-voltage detector with LED and audible alarm. Designed for safe, non-contact voltage detection in substations, overhead lines, and industrial electrical systems.
Description | Specifications | Applications | FAQ
Q1: What is the maximum voltage this detector can identify?
A: The DL-740 can detect AC voltage up to 10 kV, making it suitable for medium-voltage applications.
Q2: Does the device require direct contact with the conductor?
A: No. The DL-740 uses non-contact electric field sensing, allowing safe detection without touching live conductors.
Q3: Does it provide both visual and audible alerts?
A: Yes. The tester features LED indicators and a built-in buzzer for clear alerts in all working conditions.
Q4: Can the DL-740 be used with insulated hot sticks?
A: Yes. It is designed to be compatible with telescopic insulated hot sticks for safe-distance operation.
Q5: Is the device suitable for outdoor use?
A: Yes. The DL-740 has a durable, weather-resistant housing, suitable for both indoor and outdoor environments.
Q6: What industries commonly use this device?
A: It is widely used in power utilities, industrial facilities, substations, and electrical maintenance services.
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