iF      Frozen Contactor Relay

PRODUCT OVERVIEW

The i-F Frozen Contactor Relay forms part of the legacy-generation Bramco product range, originally developed through the  late 1990s by Gil Leishman and his engineering team, and now supported exclusively by m-tronix.

m-tronix remains the authorised and exclusive custodian and distributor of these Bramco protection technologies, continuing  more than four decades of design evolution, innovation, and field-proven reliability.

The i-F relay provides critical monitoring of switching devices to detect hazardous leakage voltage when a device is expected  to be in the open or tripped position. It operates in conjunction with a precision, three-phase Isolation Barrier that separates  high-voltage circuits from the detection electronics. Leakage on any monitored phase will energise the detection circuit and  cause the relay to trip.

APPLICATION

The i-F Frozen Contactor Relay has been engineered to:

• Detect leakage of 24 V or more across a switching device that should be open or tripped

• Operate in conjunction with a three-phase Isolation Barrier suitable for high-voltage systems

• Trip if leakage is detected on any monitored phase

• Provide protection for motor-starting and high-voltage switching applications

• Operate with a non–fail-safe detection circuit that energises upon leakage

• The relay is internally powered from the system power-supply card.

Typical applications:

• Mining starters and motor-control systems

• Contactor monitoring, including loss-of-vacuum detection

• Underground and surface electrical distribution systems

• OEM switchboard integration

• Installations requiring high-integrity leakage detection across switching devices

FEATURES

• Internal power supply

• Adjustable timer-delay function (4–20 seconds or 10–60 seconds depending on model) • Suitable for systems where motors are switched directly

• Detection circuit is non–fail-safe and energises on leakage

• Factory-set to detect a leakage of 24 V or more

• LED power indication

• LED warning of Frozen Contactor or Loss-of-Vacuum faults

• Designed for use with a precision Isolation Barrier suitable for systems up to 1100 V SPECIFICATIONS

Detection:

• Leakage detection threshold: 24 V or more

• Compatible with three-phase Isolation Barrier

• Detection circuit energises when leakage is present

Timer Delay:

• 4–20 seconds (model dependent)

• 10–60 seconds (model dependent)

Supply:

• Internally powered from system power-supply card

ORDERING INFORMATION

Enclosure

Dimensions: 75 mm (W) × 55 mm (H) × 110 mm (D)

Material:

• High-impact resistant polycarbonate construction

• IP20 rating

Mounting: DIN rail

Terminals: Cage screw terminals

Weight: 216 g

Certification

This product is designed and manufactured in accordance with ISO9001:2000 certified company standards. It is compliant with AS2081:2011.

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m-tronix Pty Ltd

info@m-tronix.com.au | +61 435 939 513 | www.m-tronix.com.au