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STM/L Portable Appliance Tester

The SafeTest Manufacturing/Luminaire (STM/L) is a versatile portable appliance tester designed for manufacturers and test facilities that need to carry out fundamental electrical safety tests on a wide variety of products to CE and international standards.

The STM/L can operate as a simple manual safety tester or with automated test sequencing, making it suitable for both small-scale and production environments. It performs a comprehensive set of tests including earth bond, insulation resistance, flash/hipot, leakage, short-to-line, and run/load tests.

With a full QWERTY keypad, optional barcode scanner, and on-screen instructions, the STM/L is simple to use. It stores up to 6,000 test results in internal memory, supports an optional safety label printer, and integrates easily into ISO quality control systems.

Function

  • Manual or automated electrical safety testing

  • Earth bond, insulation resistance, flash/hipot, leakage, short-to-line, and run/load tests

  • User-selectable pass/fail levels

  • Storage of 6,000 test results

  • Barcode scanner integration for product identification and test setup

  • Optional label printer for test tags, labels, and reports

  • Seamless integration into ISO-compliant quality systems

Technical Specifications

Flash/Hipot Test

  • Class I: 1.5kV AC

    • Range: 0.1 – 10.00mA

    • Resolution: 0.01mA

    • Accuracy: ±5% ± 2 digits

    • Pass Levels: Up to 10mA

  • Class II: 3.0kV AC

    • Range: 0.1 – 10.00mA

    • Resolution: 0.01mA

    • Accuracy: ±5% ± 2 digits

    • Pass Levels: Up to 10mA

Earth/Ground Bond Test

  • Voltage: 6V AC (open circuit)

  • Test Currents: 25A, 10A, 4A, 100mA AC

  • Range: 0.04 – 20Ω

  • Resolution: 0.01Ω

  • Accuracy: ±5% ± 2 digits

DC Insulation Test

  • Voltages: 250V, 500V DC

  • Range: 100kΩ – 50MΩ

  • Accuracy: ±5% ± 2 digits

Leakage Tests

  • Earth Leakage:

    • Voltage: Mains supply

    • Range: 0.1 – 20mA

    • Resolution: 0.01mA

    • Accuracy: ±10% ± 2 digits (1.00 – 20mA)

    • Pass Levels: Up to 10mA

  • Substitute Leakage (Short to Case):

    • Voltage: 40V AC nominal at 110/230V supply

    • Range: 0.1 – 20mA

    • Resolution: 0.01mA

    • Accuracy: ±10% ± 2 digits (1.00 – 20mA)

    • Pass Levels: Up to 15mA

Power/Run/Load Test

  • Load: 0 – 4.2kVA

  • Resolution: 0.01kVA

  • Accuracy: ±10% of reading ± 2 digits

Polarity

  • Live & Neutral continuity and polarity

General Specifications

  • Dimensions: 450 × 410 × 155mm (17.7 × 16.1 × 6.1”)

  • Weight: 9kg (19.8lb)

  • Operating Voltage Range: 103V – 126V, 207V – 253V, 45Hz – 65Hz

  • Operating Temperature: 0°C – 40°C

  • Compliance: EN 50191 (with accessories)

Standard Accessories

  • Serial port connection

  • Parallel port connection

  • Guard switch

  • Beacon interface

  • User manual

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