The 107TL47 is a Bender insulation monitoring device suitable for AC 230V unearthed IT AC power grids. Widely used in medical and industrial isolated power supply scenarios, it continuously monitors the insulation resistance of lines to the ground. When line insulation ages or suffers leakage damage, it quickly triggers a relay alarm to effectively avoid safety hazards such as short circuits, equipment burnout and shutdown failures. Designed for standard DIN rail mounting, it can be directly installed inside various electrical control cabinets.
Core Features
1. Adjustable insulation alarm threshold: 50kΩ~500kΩ
2. Measuring circuit: DC 15V, 63μA measuring signal
3. Measuring time ≤ 1 second under the condition of 1μF system capacitance
4. Status indicator lights: 1 green operation light, 8 red insulation status lights, 1 yellow fault light
5. Specification of alarm relay: AC250V 5A, compatible with external sound and light alarms
6. Operating temperature range: -5℃ ~ +50℃
Technical Parameters
Model: 107TL47
Supply Voltage: AC 230V, 50~60Hz
Power Consumption: 3 VA
Insulation Monitoring Range: 50 kOhm ~ 500 kOhm
Maximum Adaptable System Capacitance: 1 μF
Measuring Signal: DC 15V / 63μA
Analog Output: 20V, 0 ~ 400 microampere
Internal Resistance Ri: ≥240 kOhm
Internal Impedance Zi: ≥200 kOhm
Impulse Withstand Voltage: 2kV
Protection Class: IP30 for housing, IP20 for terminals
Overall Dimensions: 9.9cm × 7.5cm × 7.3cm
Net Weight: 0.4kg
Application Scenarios
Medical isolated power supply systems, industrial automation control cabinets, supporting equipment for oil-immersed transformers, elevator control boxes, laboratory isolated power supplies, and all types of unearthed IT power supply circuits that require ground fault protection.
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