Supporting Those Who Support the Downtrodden
On March, 2016, LEC got involved in a small power project when a missionary named Dale, was in the process of renovating a hospital in Malumghat, Bangladesh called Memorial Christian Hospital.
He explained to LEC that they have utility power present to run the hospital, but that it is unreliable to the point of having anywhere form 5-10 outages per day! So, they needed some switchgear and controls that would automatically start, parallel and transfer to generator power when needed. Then, execute closed transition return back to utility when utility is again available.
A couple hitches:
They were starting with small, non-paralleling Cummins gensets so we need to……
- Make them parallel
- Have control scheme that is very easy to use
- Integrate a tap changing transformer type automatic voltage regulator into the scheme – to regulate the wildly fluctuating utility voltage
- Integrate automatic power factor correction into the circuitry
- Arrange the switchgear to fit into the space available along with top entry for everything
- Make the switchgear front access only
- Do this very cost effectively
So LEC built some custom switchgear with built-in ATS functionality for this purpose. It features a clever double-hinged door design. Open the main hinged panels for complete access to switchgear interior to run cables. When finished, now access all controls by opening smaller control doors. LEC also built some genset paralleling kits to be attached and wired to the Cummins generators. With this, the system will be easy to install and effective.