Over the years, Bender has remained one of the favoured suppliers of high voltage ground monitors to many well known mining switchgear suppliers. The Bender HW monitor series has been installed in mines as far afield as Poland, Russia, China and the Ukraine.
The HW 135 monitors a trailing high voltage cable in accordance with the German standard for mine safety in electrical installations, for ground fault, for open-circuit of the ground conductor, and for conducting objects penetrating the cable.
Ground fault monitoring is based on the residual current monitoring principle. The evaluation of the ground fault current is accomplished by processing the signal from the zero sequence current transformer HWW-11. The ground continuity monitoring loop is completed by means of the EV225 terminating device which is located at the load end of the trailing cable.
The HW 135 high voltage monitor can be used on cable lengths up to 3,2 km. It is ideal for monitoring supply cables without mechanical protection in underground mines and for ground fault clearing in underground mining. It can also be used for the monitoring of excavators with trailing cables, such as tunnel boring machines.
Anglo Allied Engineering is the sole agent for Bender's range of electrical protection devices for the mining industry.
For more information contact Hilda Bouwer, Anglo Allied Engineering, +27 (0) 11 766 1180, [email protected]
Read more...Empowering Africa’s renewable energy future
Electrical Power & Protection
As a global leader in renewable energy technology, SUNGROW has pioneered sustainable power solutions for over 28 years. At the recent Africa Energy Indaba 2025, SUNGROW showcased its advanced energy solutions designed to meet the diverse needs of the African continent.
Read more...The role of electromechanical solutions in supporting Africa’s industrial growth
Electrical Power & Protection
Africa’s industries are transforming rapidly. Fuelled by a huge demand for energy connectivity, better infrastructure, increased manufacturing and responsible resource management, electromechanical solutions are key to shaping this growth, allowing industries to scale up their operations efficiently and sustainably.
Read more...Empowering South Africa’s IPPs for a renewable future
Electrical Power & Protection
Many crucial parts of the economy of the future will be hugely energy intensive, foremost amongst which will be electrified transport and the large data processing required by automation and AI. Successful economies will be those that can ensure businesses and investors have access to a stable supply of low-cost renewable energy. South Africa has the opportunity to become a global leader in this regard.
Read more...Sustainable mining operations escalate as demand for critical materials to double
Electrical Power & Protection
The mining sector is at the forefront of the energy transition due to its role in extracting essential materials and minerals necessary for green technologies. As demand for renewable energy, electric vehicles and other sustainable technologies increases exponentially, so will the demand for these necessary materials.
Read more...Monitoring partial discharge on medium voltage switchgear Schneider Electric South Africa
Electrical Power & Protection
Schneider Electric South Africa has launched its EcoStruxure Service Plan (ESP) in the Anglophone African region for medium voltage (MV) switchgear
Read more...Raptor switches Phoenix Contact
Electrical Power & Protection
The Phoenix Contact Raptor switches enable reliable and safe operation in extreme ambient conditions. The managed switch portfolio meets the stringent requirements of IEC 61850-3 and IEEE 1613 standards and is ideal for critical infrastructure and power supply applications.
Read more...Self-contained standalone lightning warning system Senseca
Electrical Power & Protection
The BTD-200 lightning warning system from Biral (UK) is a complete detection and warning system. Its highly specialised aviation grade lightning detection technology delivers the warning as soon as lightning is detected and before the first strike.
Read more...Half brick second generation converter Vepac Electronics
Electrical Power & Protection
The Supreme series half brick second generation converter from Vepac is composed of isolated, board-mountable, fixed switching frequency DC-DC converters that use synchronous rectification to achieve extremely high power conversion efficiency.
printer friendly version