Bender IR425-D4-2 Insulation monitoring instrument
1. Product Overview
Model: Bender IR425-D4-2 (industrial-grade DC insulation monitoring equipment)
Type: digital insulation monitoring device, designed for DC ungrounded systems (IT systems)
Typical applications:
Photovoltaic power generation system (PV DC side insulation monitoring)
Battery energy storage system (BESS DC bus protection)
Electric vehicle charging infrastructure
Railway DC power supply system
2. Core functional characteristics
Monitoring capabilities:
DC voltage range: 0-1000VDC (can monitor positive and negative pole insulation to ground)
Insulation resistance measurement range: 1kΩ-10MΩ (automatic range switching)
Measurement accuracy: ±5% reading (within the full range)
Alarm function:
Dual threshold alarm (early warning + fault alarm)
2-way relay output (5A/250VAC, SPDT)
Sound and light alarm indication (built-in LED status light)
Communication interface:
RS-485 Modbus RTU (standard configuration)
Support Bender Power Monitoring Software
3. Advanced technical specifications
Measurement technology:
Adopts pulse measurement principle, strong anti-interference ability
Automatically compensates system ground capacitance (maximum 20μF)
Power requirements:
Working voltage: 24VDC±10% (wide voltage design)
Power consumption: <4W (low power operation)
Environmental adaptability:
Working temperature: -25°C to +60°C
Protection level: IP40 (need to be installed in the cabinet)