Benning ST 755+ Appliance Tester (050332)

The Benning ST 755+ appliance tester is a professional-grade testing instrument engineered for comprehensive safety verification of electrical equipment in accordance with DIN VDE 0701-0702, DGUV Vorschrift 3 (BGV A3), ÖVE/ÖNORM E 8701, and NEN 3140. Its standout capability is the automatic execution of pre-programmed test sequences, enabling efficient and repeatable testing of a wide range of devices. Equipped with a large backlit graphic LCD and intuitive menu navigation, the ST 755+ delivers precise measurements of protective conductor resistance, insulation resistance, equivalent leakage current, differential current, touch current, and more. With internal memory for up to 1800 test objects and both USB and SD card interfaces, data management and reporting are streamlined. The rugged IP40-rated housing ensures durability in demanding environments, while the option for mains or rechargeable battery operation provides flexibility in the field.

Advantages

The ST 755+ offers a unique combination of accuracy, versatility, and ease of use. Its ability to store and execute custom test sequences reduces human error and increases throughput. The large graphic display with backlight ensures clear readability even in poor lighting conditions. The integrated RCD test function covers Type A, AC, and F with multiple trigger currents, making it suitable for a variety of installations. The dual power supply (mains or NiMH battery) allows for uninterrupted testing during power outages or in remote locations. Data export via USB or SD card simplifies documentation and compliance with regulatory requirements.

Suitable for

• Testing electrical appliances after repair or modification
• Periodic safety inspections in industrial and commercial settings
• Verification of portable tools and equipment per DGUV Vorschrift 3
• Testing of RCDs and PRCDs in electrical installations
• Quality assurance in manufacturing and service workshops

Key specifications

• Protective conductor resistance: 0.05 Ω – 20 Ω
• Insulation resistance: 0.1 MΩ – 200 MΩ
• Equivalent leakage current: 0.1 mA – 20 mA
• Differential current: 0.1 mA – 20 mA
• Touch current: 0.1 mA – 20 mA
• Function test power: 0 W – 4000 W
• RCD test types: A, AC, F; trigger currents: 10, 30, 100, 300, 500 mA
• Display: large graphic LCD with backlight
• Internal memory: approx. 1800 test objects/measurements
• Interfaces: USB, SD card slot
• Power supply: 230 V AC mains or rechargeable NiMH battery pack
• Safety category: CAT II 300 V; protection class: IP40
• Input sockets: 1x Schuko, 1x IEC C13

Recommendations

For professional electricians, maintenance technicians, and safety officers, the Benning ST 755+ is an indispensable tool for ensuring electrical safety and compliance. Its comprehensive measurement functions, automatic test sequences, and robust design make it a reliable choice for daily use. Pair it with BENNING PC-Win ST 750/755 software for advanced data management and reporting.