Our Longwall Substations are designed for underground longwall mining sites and are tailored to customer requests and needs.
Ampcontrol’s longwall substations are built to customer specifications and are offered in both flameproof and ingress protected (IP66) enclosures, to suit a variety of underground mine sites.
Ampcontrol’s longwall substations are typically provided as part of a complete electrical package for a longwall system. This allows for incorporation of the complete system into the control design philosophy during the design and manufacturing stages.
The complete substation including HT, transformer and LT enclosures are typically offered on a powered track mounted skid with rated lifting facilities for easy relocation around site.
Ampcontrol designs and manufactures a range of underground substations up to 7.5MVA and customises each to meet the applications required. Longwall substations can include up to 10 outlets and are typically 11kV/3.3kV up to 7.5MVA and have been manufactured in either flameproof or ingress protected (IP66) variations.
11kV connections are typically provided via a flameproof coupler and may incorporate switched or non-switched through supplies. All 11kV equipment is housed in the High Tension (HT) Enclosure of the substation. Integrated into the HT enclosure are the isolation, earthing and protection required for the main transformer.
Transformers provided for Longwall Substations are nitrogen filled, dry type transformers (GNAN cooling system) units only. All GNAN transformers are built to meet IEC standards for explosion protection technique Ex p.
Each LT enclosure is customised to meet specific mine site communication requirements and can include PLC based control systems, HMI interface capabilities and SCADA packages. Customer required functionality including safety rated (SIL) isolation and earthing systems can be incorporated into the Control and HMI systems to ensure safe and reliable operation from behind closed doors.
Each substation upon completion follows through a process of Factory Acceptance Testing, Compatibility Testing (where necessary) and Commissioning to ensure operational status on delivery. Manuals including flameproof dossier and drawings are provided and options are available for ongoing support for each product including lifecycle management.
