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Ensuring electrical safety in underground mining
Shaft tower
Safely up and down and up again
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Product overview Residual current monitoring | |
Technical paper Electrical safety in control and auxiliary circuits |
Recommended systems for residual current monitoring:
Recommended measuring current transformers:
Analysing and reporting:
Recommended for resistance grounded systems:
Electronic equipment for use in power installations
Ventilation
A reliable supply of air
Ventilation of underground mines is a crucial criterion for their operational safety. An interruption to the ventilation is potentially life-threatening for the miners, includes an increased fire risk and failure of the production system. This means continuous residual current monitoring using RCMS is vital, as it detects any hazardous changes to the power supply immediately.
- Downloads
- Products
- Standards
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Product overview Residual current monitoring | |
Technical paper Electrical safety in control and auxiliary circuits |
Recommended systems for residual current monitoring:
Recommended measuring current transformers:
Analysing and reporting:
Recommended for resistance grounded systems:
Drainage
Water - a life-threatening risk underground
Drainage of underground mines is incredibly important. Any interruption to the drainage system increases the risks of shafts filling up with water and people being put in danger. From this perspective, continuous monitoring with ISOMETER®s or RCMS residual current monitoring systems is essential. They immediately recognise hazardous changes in the power supply.
- Downloads
- Products
- Standards
- Seminars
Product overview Residual current monitoring | |
Technical paper Electrical safety in control and auxiliary circuits |
Recommended systems for residual current monitoring:
Recommended measuring current transformers:
Analysing and reporting:
Recommended for resistance grounded systems:
Conveyor belts
Getting from A to B quickly but safely
Electric motors are generally employed for conveyor belts used in mining, which are driven by soft starters or frequency converters. However, these generate critical harmonic vibrations and DC currents which would not normally be present in the feeding AC system. With regular RCD or simple insulation monitors (e.g. 3 lamp method or 2 voltmeter process), this cannot be monitored with the requisite precision. There is a need for modern monitoring equipment which can recognise and report these problems quickly. Some standards even require a quick shutdown, which can be achieved using Bender insulation monitoring devices.
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Product overview Residual current monitoring | |
Technical paper Electrical safety in control and auxiliary circuits |
Recommended systems for insulation monitoring:
Recommended systems for residual current monitoring:
Recommended measuring current transformers:
Recommended coupling devices:
Analysing and reporting:
Recommended for resistance grounded systems:
Electronic equipment for use in power installations
DIN VDE 0168
Errichten elektrischer Anlagen in Tagebauen, Steinbrüchen und ähnlichen Betrieben
Mobile equipment
Safe mobility underground
Mining vehicles are electrically powered. These cordless vehicles need monitoring of the earthing conductor in the cable (pilot wire monitoring). For this application, Bender offers a range of monitoring options, depending on the requirements for wire monitoring or fault current/earth conductor monitoring.
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Recommended systems for ground-fault and ground-continuity monitoring:
Analysing and reporting:
Recommended for resistance grounded systems:
Machines for underground mines - Mobile machines working underground - Safety - Part 1: Rubber tyred vehicles
DIN EN ISO 19225
Underground mining machines - Mobile extracting machines at the face - Safety requirements for shearer loaders and plough systems