IRDH275-435 BENDER Insulation Monitoring Device

Description

IRDH275-435 BENDER Insulation Monitoring Device

Product Dimensions：

Product Description

2. Technical Parameters

3. Product Advantages

• Patented AMPPlus Technology: Delivers accurate insulation measurement in high‑leakage‑capacitance systems and with VFDs, eliminating false alarms.
• Wide System Compatibility: Supports pure AC, pure DC, and mixed AC/DC IT systems up to 793 VAC / 650 VDC.
• Dual Alarm Thresholds: Two independently adjustable response values (Ran1/Ran2) for early warning and critical fault signaling.
• Multi‑Interface Integration: Relay outputs, 4–20 mA analog, and RS‑485 Modbus for seamless connection to PLCs, SCADA, and safety systems.
• Automatic Self‑Diagnostics: Periodic self‑tests verify device health and alert to internal faults.
• User‑Friendly Operation: Intuitive text display, front‑panel test/reset buttons, and lockable settings to prevent misoperation.
• Robust Industrial Design: Wide temperature range, high vibration/shock resistance (IEC 60068), and IP20/IP65 protection for harsh environments.
• Compliance & Safety: Meets global standards (IEC 61557‑8, NEC 250.21(B)) for IT system insulation monitoring.
• Flexible Installation: DIN‑rail or panel‑mount options for easy integration into control panels.

4. Precautions

• System Compatibility: Only use for ungrounded IT systems; do not connect to grounded (TN/TT) systems, which will cause measurement errors.
• Voltage Limits: Never exceed 793 VAC / 650 VDC system voltage; overvoltage damages the device.
• Power Supply: Use a stable 88–264 VAC / 77–289 VDC supply; avoid voltage fluctuations and transient surges.
• Wiring Safety: Use properly sized conductors (0.2–4 mm²) and tighten terminals to 0.5 Nm; ensure no short circuits between measurement lines.
• Alarm Configuration: Set dual thresholds correctly (Ran1 = warning, Ran2 = critical) based on system safety requirements.
• Inductive Loads: Connect freewheeling diodes to relay outputs switching inductive loads (relays, contactors) to suppress voltage spikes.
• Environmental Protection: Operate within -40°C to +70°C; avoid direct water spray, oil, corrosive gases, and excessive dust (IP20 rating for terminals).
• Isolation Maintenance: Do not bridge isolation barriers; maintain electrical separation between measurement circuits and power supply.
• Calibration: Periodically calibrate the device per BENDER’s guidelines to ensure measurement accuracy.
• Adjacent Devices: Maintain ≥30 mm clearance to adjacent equipment for ventilation and heat dissipation.

5. Product Applications

• Industrial Automation: Manufacturing lines, machine tools, robotics, and VFD‑driven systems in automotive, metalworking, and general machinery.
• Power Generation & Distribution: Power plants, substations, UPS systems, battery banks, and renewable energy (solar/wind) IT networks.
• Marine & Offshore: Shipboard electrical systems, offshore platforms, and port equipment (compliant with marine safety standards).
• Healthcare: Hospitals, medical imaging (MRI/CT), and critical care facilities (IT systems for life‑support equipment).
• Data Centers: Uninterruptible power supplies (UPS), server racks, and backup power systems.
• Mining & Oil & Gas: Underground mining equipment, offshore drilling rigs, and process control systems (hazardous area‑ready variants available).
• Building Automation: Large commercial buildings, airports, and railway systems (HVAC, fire safety, and emergency power).
• Transportation: Electric vehicles (EV) charging infrastructure, railway signaling, and mass transit systems.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

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