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]
Power supply with scalability optimised Schneider Electric South Africa
Electrical Power & Protection
Schneider Electric has introduced the Easy UPS 3-Phase Modular to the South African marketplace. This robust uninterruptible power supply (UPS) is designed to protect critical loads while offering third-party verified Live Swap functionality.
Read more...Prioritising arc flash safety Comtest
Electrical Power & Protection
Comtest has developed a range of thermal imaging and wireless testing tools from Fluke, designed to ensure safety is the top priority for engineers working in potentially dangerous arc flash zones.
Read more...Monitoring the voltage drop in cables Turck Banner Southern Africa
Electrical Power & Protection
With its new M12Plus connectors, Turck Banner is directly shifting the condition monitoring of cables subject to severe stress to the connection technology. The connectors, which come with voltage and current monitoring and a Bluetooth chip, enable measured voltage and current values to be sent wirelessly to a controller.
Read more...Mesh networks: a multidirectional electrical superhighway Schneider Electric South Africa
Electrical Power & Protection
Today, many power industry stakeholders are faced with mounting requirements for improved grid reliability, resilience and distribution efficiency. It’s a challenge which requires power service providers to rethink their infrastructure. Enter mesh networks, which can overcome the limitations of traditional star networks.
Read more...Versatile flexible copper busbar
Electrical Power & Protection
Referro Systems specialises in the supply and support of industrial electrical, automation and global software and hardware brands, and is now able to offer the Cubic range of Cu-Flex flexible copper busbars.
Read more...Trafo Power Solutions upgrades DRC mine transformers
Electrical Power & Protection
With its experience in Africa and its agility in executing projects rapidly, Trafo Power Solutions is supplying three mini-substations and two transformers to a copper-zinc mine in the Democratic Republic of Congo.
Read more...Acquiring locally-manufactured transformers ACTOM Electrical Machines
Electrical Power & Protection
Speed and efficiency are of the essence in the fast-evolving power generation and distribution space; but a significant challenge is the prolonged lead times associated with acquiring transformers – key components in any electrical infrastructure.
Read more...Seaward testers power PV specialists Comtest
Electrical Power & Protection
One of Asia’s leading clean energy specialists, Solarvest, uses the latest electrical safety test equipment to ensure the solar photovoltaic (PV) installations it services and maintains operate at peak performance levels.
Read more...Multi-purpose contact block
Electrical Power & Protection
The TME catalogue has been expanded to include products from Schlegel. This German, family-owned company has been specialising in the production of high-quality electromechanical components for almost 80 years.
Read more...ACTOM supplies transformer units to Kamoa Copper Mine ACTOM Electrical Machines
Electrical Power & Protection
ACTOM Distribution Transformers, recently secured an order for the supply of its neutral electromagnetic couplers, with earthing resistors, and an auxiliary transformer) to Kamoa Copper Mine in the DRC.
printer friendly version