For over 70 years, BENDER has been a worldwide leader in providing electrical safety equipment to all types of applications and customers. BENDER offers the most advanced ground fault equipment on the market today, including:

• Ground fault monitors and ground fault relays for grounded and high-resistance grounded AC/DC systems
• Ground fault monitors and ground detectors for ungrounded (floating/isolated) AC/DC systems
• Ground fault location equipment for all types of AC/DC systems
• LifeGuard series ground fault circuit interrupters (GFCIs) for single- and three-phase systems, from 20 A to 400 A, and up to 600 V
• Low voltage, digital and analog relays for monitoring over- and undervoltage, over- and underfrequency, phase sequence/phase loss, and more
• Digital overcurrent and undercurrent relays
• Digital ground continuity / ground integrity monitors
• Isolated power systems for healthcare facilities, including the LIM2010 line isolation monitor

Products:

Ground Fault Products

– For Grounded and High-Resistance Grounded Systems

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Monitors for AC Only Systems

BENDER’s RCM series of ground fault monitors provide advanced warning of ground faults without the problems associated with nuisance tripping. RCM series monitors work on single-phase and three-phase AC systems. A wide variety of adjustable trip levels, display types, and outputs are available.

Applications:

• Ground fault detection in grounded and high-resistance AC systems
• Branch monitoring
• Motors and motor control systems
• Generators, portable and fixed
• Alarm systems, safety devices

Applications 

• General Industrial Systems
• Controls and Control Systems
• Heat Tracing Systems
• Marinas

RCM420

Digital ground fault monitor for grounded and high-resistance grounded AC systems

RCM470LY

Ground fault monitor for grounded and high-resistance grounded AC systems

RCM475LY

Ground fault monitor for grounded and high-resistance grounded AC systems

Monitors for AC/DC Systems

BENDER’s RCMA series of ground fault monitors utilize the latest technology to detect ground faults on both AC and DC systems. RCMA series monitors feature digital displays which show the measured ground fault current in real-time. A wide variety of adjustable trip levels and outputs are available.

Applications:

• Ground fault detection in grounded and high-resistance AC/DC systems
• Branch monitoring
• Variable frequency drives (VFDs)
• Batteries and battery backup systems
• Motors and motor control systems

Applications 

• Generators, portable and fixed
• Alarm systems, safety devices
• General industrial systems
• Controls and control systems
• Heat tracing systems

RCMA420

Digital ground fault monitor for grounded and high-resistance grounded AC/DC systems

RCMA423

Digital ground fault monitor for grounded and high-resistance grounded AC/DC systems

Multiple Circuits and Branch Monitoring

BENDER’s RCMS series of ground fault monitors are designed to monitor up to 12 separate branches or circuits from a single device. Both AC and DC systems are supported. RCMS modules feature detailed digital displays, optional separate contact outputs, and compatibility with BENDER’s remote communication system.

Applications:

• Ground fault detection in grounded and high-resistance AC/DC systems
• Pure DC systems, mixed AC/DC systems
• Systems with variable frequency drives (VFDs)
• Motors and motor control systems
• Power distribution systems

Applications 

• Alarm systems, safety devices
• General industrial systems
• Controls and control systems
• Heat tracing systems

RCMS460

Multi-channel, digital ground fault monitor for grounded and high-resistance grounded AC/DC systems

RCMS490

Multi-channel, digital ground fault monitor for grounded and high-resistance grounded AC/DC systems

Current Transformers

BENDER current transformers are highly sensitive measuring devices, designed for use with BENDER RCM, RCMA, RCMS, and EDS series products. Various sizes and shapes are available, including round, rectangular, split-core, and flexible.

W0-S20…W5-S210 Series

Current transformers for RCM and RCMS series ground fault monitors (AC only systems)

WAB Series

Current transformers for RCMA420, RCMA423, and RCMS series ground fault monitors (AC/DC systems)

WR Series

Rectangular current transformers for RCM and RCMS series ground fault monitors (AC only systems)

WS Series

Split-core current transformers for RCM and RCMS series ground fault monitors (AC only systems)

WF Series

Flexible split-core current transformers for RCM and RCMS series ground fault monitors (AC only systems)

W-8000 Series

Current transformers for use with EDS461/EDS491 ground fault location modules

Ground Fault Circuit Interrupters

BENDER is a leading provider of protection solutions to industrial facilities of all types of applications, from power distribution monitoring to load protection. Our wide and varied portfolio of products ensures that your facility has the protection it needs, no matter what the application is.

BENDER’s LifeGuard series of GFCIs ensures that your personnel and equipment recieve the latest in protection technology. Our complete package of ground fault detection and interruption includes the following features:

• Rated for up to 100 A load current or more
• Detects both AC and DC faults
• Works with all standard voltages, including 208 V, 480 V, 600 V, and more
• Works on systems with variable frequency drives (VFDs)
• Grounded neutral protection and inverse time curve to help prevent nuisance tripping
• Easy-to-install package in NEMA rated enclosure
• Customizable options available, including adjustable setpoints, stop/start capability, and more

Accessories – Remote Indicators

Remote indicators and remote stations for isolated power system monitoring.

9604 Series

Analog output meters for BENDER devices

MK2000 Series

Remote Indicators for LIM2010 Line Isolation Monitor

MK2000CBM Series

Digital Remote Indicator for LIM2010 Line Isolation Monitor

RAS Series

Remote Annunciator Station for Line Isolation Monitors

MK2430

Remote indicating station for BENDER devices

MK800

Remote indicating station for BENDER devices

Accessories – Communication Gateways

Solutions for connecting BENDER equipment to modern communication networks.

Applications:

• Modern building management systems and information networks
• Centralization of alarm information
• Fast remote notification of alarms
• Integration into Ethernet and Modbus/TCP networks
• Locations requiring fast, remote notification of maintenance personnel

COM460IP

Ethernet and Modbus/TCP communication gateway for BENDER devices

COM461MT

Modbus/TCP communication gateway for compatible BENDER devices

COM462RTU

Modbus/RTU communication gateway for compatible BENDER devices

Ground Fault Products

– For Ungrounded / Floating Systems

BENDER ground detectors are specifically designed to detect ground faults on ungrounded systems, giving advanced warning of issues before leakage current may even be present. BENDER monitors employ the latest technology to ensure accurate readings on virtually all types of systems, including AC, DC, and mixed AC/DC systems, as well as systems with variable frequency drives (VFDs).

Low Voltage AC/DC Circuits

Low-voltage ground detectors are designed for systems up to 300 V. Where applicable, these monitors meet the requirements for ground detectors set forth in NEC 250.21(B) and CEC 10-106(2).

• Meets requirements for ground detectors in accordance with NEC 250.21(B) and CEC 10-106(2)
• Ground fault detection for ungrounded AC/DC systems up to 300 V
• Two separately adjustable insulation resistance response values, 1 kΩ…200 kΩ
• Digital display showing readings in real-time
• Easy-to-use, onboard menu for managing settings

• Automatic self-test
• Analog output
• Built-in test and reset buttons
• Connections for external test and reset
• Latching or non-latching operation, selectable
• Two SPDT contact outputs, normally energized or normally de-energized operation

IR420-D4

Digital ground fault detector for ungrounded single-phase AC systems up to 300 V

IR425

Digital ground fault detector for ungrounded single-phase AC and DC systems up to 300 V

Main AC/DC Systems

Main system detectors are designed for general AC/DC power distribution monitoring, as well as specific applications. Where applicable, these monitors meet the requirements for ground detectors set forth in NEC 250.21(B) and CEC 10-106(2). Certain devices may have industry standard specific approvals – see individual device information for details.

IR470LY

Ground fault detector for ungrounded (floating) AC systems

Applications:

• AC systems, single- and three-phase
• General distribution and control systems
• Motors and motor control centers
• Generators, portable and fixed
• Large industrial systems

iso685

Digital ground fault detector for ungrounded AC/DC systems

Applications:

• AC systems, single- and three-phase
• Pure DC and mixed AC/DC systems
• General distribution and control systems requiring fast ground fault location
• UPS systems and battery systems
• Systems with variable frequency drives (VFDs)
• Systems with power conversion components, including rectifiers and inverters
• Large industrial systems

IRDH275

Digital ground fault detector for ungrounded AC/DC systems

Applications:

• AC systems, single- and three-phase
• Pure DC and mixed AC/DC systems
• General distribution and control systems requiring fast ground fault location
• UPS systems and battery systems
• Systems with variable frequency drives (VFDs)
• Systems with power conversion components, including rectifiers and inverters
• Large industrial systems

isoLR275

Digital ground fault detector for ungrounded, low-resistance systems

Applications:

• AC systems, single- and three-phase
• Pure DC and mixed AC/DC systems
• Systems operating with a low resistance to ground
• General distribution and control systems requiring fast ground fault location
• UPS systems and battery systems
• Systems with variable frequency drives (VFDs)
• Large furnaces / smelters
• Systems with power conversion components, including rectifiers and inverters
• Large industrial systems

IRDH375

Digital ground fault detector for ungrounded AC/DC systems

Applications:

• AC systems, single- and three-phase
• Pure DC and mixed AC/DC systems
• UPS systems and battery systems
• Systems with variable frequency drives (VFDs)
• Systems with power conversion components, including rectifiers and inverters
• Large industrial systems

IRDH575

Digital ground fault detector and ground fault location controller for ungrounded AC/DC systems

Applications:

• AC systems, single- and three-phase
• Pure DC and mixed AC/DC systems
• UPS systems and battery systems
• Systems with variable frequency drives (VFDs)
• Systems with power conversion components, including rectifiers and inverters
• Large industrial systems
• Ungrounded systems with high leakage capacitances
• Interconnected ungrounded systems

iso1685P

Ground fault detector for large scale isolated (ungrounded) systems and solar arrays

Applications:

• Isolated (ungrounded), large-scale systems and solar arrays
• AC systems, single- and three-phase
• Pure DC and mixed AC/DC systems
• Systems with high leakage capacitances
• Multiple ungrounded systems connected via tiebreaker / interlock

Detectors for Renewable Industries

isoPV425

Digital ground fault detector for ungrounded solar arrays up to 100 kW

Applications:

• Isolated (ungrounded) solar arrays 100 kW or less
• AC systems, single- and three-phase
• Pure DC and mixed AC/DC systems
• Systems with high leakage capacitances
• Multiple ungrounded systems connected via tiebreaker / interlock

Designed specifically for photovoltaic systems 100 kW and below, the isoPV425 ground fault detector provides early indication of ground faults before leakage current may even be present. The device detects both AC and DC ground faults by monitoring the system’s insulation resistance. The isoPV425 and AGH420 can connect to systems up to 690 VAC / 1000 VDC.

isoPV

Digital ground fault detector for ungrounded solar arrays

Applications:

• Isolated (ungrounded) solar arrays
• AC systems, single- and three-phase
• Pure DC and mixed AC/DC systems
• Systems with high leakage capacitances
• Multiple ungrounded systems connected via tiebreaker / interlock

The isoPV detects ground faults in isolated (ungrounded) solar arrays up to 793 VAC / 1100 VDC. The iso-PV monitors for ground faults by measuring the system’s insulation resistance, providing early indication of ground faults before leakage current may even be present. Both AC and DC ground faults can be detected, including on systems that have high leakage capacitances.

IR155 10 & IR155 03-04

Ground fault detectors for level 3 and AC/DC electric vehicles

Applications:

• Ungrounded DC systems
• Level 3 electric vehicle chargers
• Integration into electric vehicle drive systems

The IR155 10 series detects ground faults in ungrounded DC electric vehicle chargers (level 3). The device monitors the system’s insulation resistance between the charger and ground, for systems up to 800 VDC.

The IR155 03/04 series detects ground faults in ungrounded drive systems in electric vehicles. The device monitors the system’s insulation resistance between the charger and ground, for systems up to 1000 VDC.

The advanced measurement method monitors both the DC side as well as the AC motor side of the system, even through high system interference conditions caused by motor control processes. The devices are PCB-style with a very small footprint and light weight. Various connector and drive output options are available.

Portable Ground Fault Location for Ungrounded Systems

Portable EDS fault location systems provide a simple method of locating ground faults once they have been detected. The system may be used together with BENDER’s installed ground fault detector or as a standalone portable system.

EDS3090 & EDS3090PG

Portable ground fault location system for ungrounded AC/DC systems

Applications:

• AC systems, single- and three-phase
• Pure DC and mixed AC/DC systems
• Distribution systems requiring fast ground fault location
• UPS systems and battery systems
• Systems with variable frequency drives (VFDs)
• Systems with power conversion components, including rectifiers and inverters
• Large industrial systems

The EDS3090 is a portable ground fault location system for ungrounded AC and DC systems. The system utilizes an advanced measuring principle to locate ground faults down to the load level. The robust aluminum case includes the EDS190P ground fault evalulator, varying sizes of current clamps, and accessories.

The EDS3090 is designed for use with BENDER’s installed IRDH575 ground fault detector, while the EDS3090PG is designed to be a stand-alone portable location system and requires no other devices to operate.

Ground Fault Location Equipment

Installed EDS series modules provide an automated process of detecting faults. Each device can monitor up to twelve separate branches in parallel for any detected ground faults. Simple indication is provided to personnel when a fault is located.

EDS460 & 461

Ground fault location module for ungrounded AC/DC systems

EDS490 & 491

Ground fault location module for ungrounded AC/DC systems

The EDS460/61 & 490/91 ground fault location modules, in combination with the IRDH575 ground fault detector, locate branch faults in ungrounded AC/DC systems. Up to 12 separate branches may be monitored by one device. Up to 90 EDS devices may be connected together, for a total of 1080 branches simultaneously monitored. The EDS460/61 & 490/91 work on both AC and DC systems, including systems with variable frequency drives (VFDs). Devices are interconnected via RS-485 to automate the process of locating faults. An LCD display shows which branch has the ground fault after it has been located.