| Attribute | Value |
|---|---|
| Product Name | Bender IRDH265-3 Insulation Monitoring Device |
| Brand | Bender GmbH & Co. KG |
| Model / Type | A-ISOMETER, Serie 260, IRDH265-3 |
| Category | KΩ Monitor / Insulation Monitoring Device |
| Software Version | D83 V2.5-3 |
| Article No. | B91068008 |
| Response Value | Ran1 = 2–200 kΩ, Ran2 = 2–200 kΩ |
| Rated Voltage | 3AC/AC 0–440V, DC 0–220V |
| Supply Voltage | AC 230V, 50/60 Hz |
| Power Consumption | 6 VA |
| Relay Contacts | AC 250V, 5A |
| Weight | 750 gm |
| Ref No. | 57277 |
What is a Bender IRDH265-3 Insulation Monitoring Device?
The Bender IRDH 265-3 is an advanced insulation monitoring device used in ungrounded IT power systems. It continuously monitors the insulation resistance between active conductors and earth. The moment the resistance falls to a critical value, the device immediately alarms the operator so prompt corrective measures can be taken.
This device forms part of Bender’s renowned IRDH series of devices, widely used across a number of industries requiring uninterrupted power supply combined with high electrical safety standards. It provides precise monitoring even in complex networks thanks to high-frequency measuring technology and adjustable response values.
Key Features of Bender IRDH265-3
1. Continuous Insulation Monitoring
Continuous insulation resistance monitoring in IT systems
Early detection of insulation faults, preventing breakdowns
2. Adjustable Alarm Thresholds
Set upper and lower resistance limits
Customizable alerts to match system requirements
3. Digital Display for Clear Readouts
Real-time measurement values
Easy monitoring and fault identification
4. High-Frequency Measuring Method
Accurate Detection even in Systems with interference
Reduces false alarms and adapts rapidly to fluctuating network conditions.
5. Compatible with Large and Complex Power Systems
Works well with AC, DC, and mixed networks
Handles variable load systems and frequency converters
6. Relay Outputs for Alarming
Built-in output relays for external buzzers, lights, or PLC alerts
Supports integration with safety automation
7. Self-Monitoring and Diagnostics
Continuously checks its own performance
Ensures reliability and avoids unnoticed device faults.
8. Robust Industrial Design
Long service life
High resistance against electrical noise and harsh environments
Applications
The IRDH265-3 finds a number of applications in electrical devices when continuity and safety are necessary.
1. Marine & Shipboard Systems
- Navigation systems
- Engine control rooms
- Power distribution on vessels
- High humidity and continuous operation call for reliable monitoring in marine applications.
2. Industrial Automation
- Manufacturing plants
- Assembly lines
- CNC machines and robotic systems
- Helps prevent sudden shutdowns due to insulation deterioration.
3. Power Generation & Distribution
- Power stations
- Substations
- IT networks
- Guarantees stable power supply and decreases unplanned failures.
4. Oil & Gas Installations
- Offshore platforms
- petrochemical plants
- Provides reliable monitoring in hazardous zones that require safety-certified equipment.
5. Medical & Hospital Equipment
- Operating theatres
- ICU power supplies
- Prevents electrical failures in life-critical environments.
6. Renewable Energy Systems
- Wind turbines
- Solar farms with inverters
- Monitors insulation to prevent arc faults and damage.
7. Data Centers
- UPS systems
- Server rooms
- Allows for continuous operations and protects sensitive electronics.
Why Choose the Bender IRDH265-3?
✔ Superior Accuracy
Equipped with advanced measuring technology, it provides highly accurate insulation readings even in demanding power systems.
✔ Proven Reliability
Bender is a global market leader in electrical safety solutions. The IRDH265-3 provides trusted performance in marine, industrial, and medical installations worldwide.
✔ Minimizes Downtime
It detects insulation faults early, thus preventing costly shutdowns and equipment failures.
✔ Easy Integration
Compatible with PLCs, alarm panels, automation systems, and safety controllers. The relay outputs allow for easy installation.
✔ Safety Compliance
Helps facilities maintain international electrical safety standards-like IEC and DIN norms.
✔ Long-Term Cost Savings
Early fault detection reduces repair costs, protects equipment, and enhances operational continuity.
✔ Ideal for harsh environments
Designed for stability in environments involving vibration, electrical noise, humidity, or temperature variations.
