TD1250 Verification Device for Earth Continuity Testers

Safety & Hipot Test Instruments

The TD1250 is a high-precision instrument designed to accurately simulate AC and DC standard resistances. It is ideal for calibrating grounding resistance testers and other AC/DC low-resistance measurement instruments. Additionally, TD1250 functions as a reliable AC/DC ammeter, supporting accuracy verification tasks such as maximum allowable error testing, alarm error verification, and current setting accuracy validation as required by industry calibration standards.

Key Features

• Simulates both AC and DC standard resistances with high accuracy.
• Suitable for calibration of earth resistance testers and low-resistance instruments.
• Works as a precise AC/DC ammeter with scalable measurement accuracy.
• Meets measurement requirements for error testing and calibration compliance.
• Supports full automation and computer communication via RS-232 interface.
• Stable performance with temperature and humidity tolerance suitable for laboratory and field environments.

DCI Measurement Specifications

General Specifications

• Power Supply: AC (220 ± 22)V, (50 ± 2) Hz
• Warm-Up Time: ≥ 30 minutes
• Maximum Power Consumption: 100 VA
• Temperature Range: Working: 5°C ~ 45°C | Storage: -20°C ~ 70°C
• Humidity: Working: 40%–80% RH (no condensation) | Storage: < 80% RH
• Interface: RS-232 Communication
• Weight: Approx. 7.9 kg
• Dimensions: 215 mm (W) × 400 mm (D) × 150 mm (H) (excluding handles and feet)