b3^C Compliant Series

 

Take some time to review the results of recent market initiatives with the launch of the b3^C relay range, providing compliance to relevant standards inc AS/NZS 2081:2011. In support, detailed compliance documentation is now available.

As with all Bramco products, our design are in operation throughout the world. They are ideally suited to the extreme environments that exist in mining and heavy industries. Innovation in design, come try our vision.

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Earth Leakage Lockout/Frozen Contactor Relay – ellfc3^C

Leaders in Innovative Protection Systems, Bramco’s ellfc3 is compliant to the latest statutory and industry standards (AS2081:2011). The ellfc3 combination Relay provides next generation Earth Leakage Lockout and Frozen Contactor Protection.

ELL - Earth Leakage Lockout: monitors earth leakage on conductors in an outgoing load circuit before load contactor is closed and to prevent closing the contactor if the earth leakage resistance is below pre-selected level.

FC - Frozen Contactor: monitors voltage on the outgoing load circuit when the load contactor is open, identifying leaky vacuum contactor or welded contactor, then initiate isolation of the incoming supply via circuit breaker back tripping.

Features:

ELL:
• Failsafe operation – relay opens on fault
• When incoming mains power is switched onto the system the LR scans the outgoing cable and will
  lockout if an earth fault is present of 1M ohms or less
• bar3 – Barrier (ANZEx 11.3014X) monitored for integrity – causes trip if not connected
• Common AR interlock contact input
• Separate contacts.

FC:
• Non-Failsafe operation – relay closes on fault
• Adjustable Timer inhibit for motor loads
• More than 25VAC/60VDC on any phase will cause trip
• bar3 – Barrier (ANZEx 11.3014X) monitored for
  integrity – causes trip if barrier fails to detect
  phase voltage during normal operation
• Barrier loss detection
• Common AR interlock contact input
• Separate contacts.

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Neutral Link Monitor – nlm3^C

Leaders in Innovative Protection Systems, Bramco’s nlm3 is compliant to the latest statutory and industry standards (AS/NZ 2081:2011). The Retro fittable Neutral Link Monitor (nlm3) is a NER integrity protection device designed to continuously monitor the current limitation system on the secondary star point to earth connection of a supply transformer.

The unit can also be utilised to monitor a direct connection to earth from the star point. The nlm3 monitors the NER Resistance integrity, excess phase voltage rise, neutral earth leakage current, with the ability to adjust trip times for protection coordination.

The nlm3 connects directly to AC supply systems with line voltages up to 1100 Volt without any additional barrier assembly. It can also be utilised on systems with line voltages up to 4160 Volt with the addition of a barrier assembly.

The nlm3 has dual power supplies for control voltage for 24-48VAC/DC and 110VAC Earth Leakage Current is monitored in the neutral to earth circuit using an external EL toroid (Toroid not included).

LED indication of Power On, NER integrity, Excess Voltage and Earth Leakage current. The unit is configured as fail safe and latch on fault.

Adjustable earth leakage current trip, excess voltage trip and NER resistance limits.Earth leakage frequency response range selectable: 50 – 60Hz or 5 – 100Hz.

Open circuit toroid protection, Time-stamped log of trip events and Password protection for setting all parameters.

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Neutral Earth Relay – ne3^C

The all New Bramco Neutral Earth relay (ne3) is a low cost NER integrity protection device that complies to AS/NZ 2081:2011. The ne3 continuously monitors the current limitation system on the secondary star point to earth connection of a supply transformer.

The unit can also be utilised to monitor a direct connection to earth from the star point. The ne3 monitors the NER Resistance integrity, excess phase voltage rise, with the ability to adjust trip times for protection coordination.

The ne3 connects directly to AC supply systems with line voltages up to 1100 Volt without any additional barrier assembly. It can also be utilised on systems with line voltages up to 4160 Volt with the addition of a barrier assembly.

The ne3 has dual power supplies for control voltage for 24-48V AC/DC and 110VAC.

The unit is configured as fail safe and latch on fault
• Back up protection is provided by detecting voltage
• Trip Delay Times are individually adjustable for:
  o NER integrity & Over-voltage
• Adjustable excess voltage trip
• Adjustable NER resistance limits
• Reset push button input provided
• Time-stamped log of trip events
• Password protection for setting all parameters.

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Earth Leakage Relays – el3^C, fel3^C

The el3 & fel3 Earth Leakage relays are an intelligent microprocessor based, versatile, earth fault protection modules. Bramco’s el3 and fel3 are compliant to the latest statutory and industry standards (AS2081:2011). They have been designed to detect earth current faults flowing in a power system and provide a timed tripping mechanism.

Features:
• Din Rail Foot Mounting (el3)
• Fascia Mounting (fel3)
• Clear opening door protection to IP54 (fel3)
• Incredible accuracy and consistency is within 5% at both the
  top and bottom of its monitoring current range
• The el3 & fel3 range can be mixed and matched with any of
  the 1000T ELTs without impacting accuracy
• 50-60Hz/5-100Hz operation
• Developed for use with latest generation VF drives.

Earth Leakage Relays – elf3^C

Bramco’s fascia-mounted intelligent micro-processing elf3, detects earth
fault currents flowing in a power system and provides visual indication of earth leakage conditions. The elf3 is compliant to the latest statutory and industry standards (AS2081:2011).

The elf3 is specifically designed to protect systems supplying VF drives and provides very high immunity to converter noise.

The elf3 uses an earth leakage toroid to measure RMS current and operates tripping contacts when the measured RMS current exceeds the trip setting for the duration of the trip time setting.

Features:
• Incredible accuracy and consistency is within 5% at both the top and bottom of its monitoring   current range.
• The elf3 range can be mixed and matched with any of the elt3 1000T Earth Leakage Toroids,   without impacting accuracy.
• The Backlit Display provides a wide number of operating statistics, and is coloured to
  match the operating status. (healthy, tripped, warning)
• 50-60Hz/5-100Hz operation.
• Developed for use with latest generation VF drives.

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Earth Continuity Relay – ic3^C

As part of Bramco’s exciting new b3C range the ic3 represents next generation earth continuity and pilot wire monitoring and protection. The ic3 is designed to latest statutory requirements and industry standards and represents the culmination of over two years of efforts by Bramco’s research team.

The Bramco ic3 Earth Continuity Relay is designed to replace older models such as IC, IC1 and IC2. The ic3 will actively monitor the Resistance of the Pilot Earth circuit in a supply cable via diode termination.

The ic3 utilizes latest microprocessor technology to provide a greater level of stability over extremely long length pilot cables by using digital filtering techniques. The microprocessor also performs continual self diagnostics to prevent false tripping or failure to operate. The ic3 has user selectable trip resistance, adjustable between 5 and 45 ohms as well as user selectable trip time from 100-500ms for electrically noisy cable reels and VSD.

Key operating information:

• Operational trip resistance selectable from 5-45 ohms
• Excellent tolerance to pilot capacitance and
  inductance allowing for longer cable runs
• Local or Remote start operation
• Failsafe Operation
• Certified Intrinsically Safe for operation in
  explosive environments to Exib.