Pernec Advanced Network Sdn Bhd (PAN) has a lot of experiance in fabricating durable telecommunication outdoor cabinets for many years. It all started in 1997, when Pernec Transmission Sdn Bhd requested PAN to localize DLC outdoor cabinets originated from NEC Brazil (NDB).
Starting with total adherence to NDB design in DLC1 and DLC2 projects, PAN had managed to incorporate many improvements in DLC3 and DLC4 projects based on TM feedback and studies on earlier cabinets. This has charted good reputation for PAN in the production of telecommunication cabinets.
Interestingly in this time, the Contract requires the MPOCs to comply for the most part with IP55 Standard, namely the requirements for dust-free and waterproofing together with few other tests. The SIRIM-IP55 dust free test was a historical and most challenging experience for both SIRIM and PAN because of the big size of the MPOC that could not fit into available 1 cubic meter test chamber. So, PAN had to build a special chamber that could cater for the dust test.
Basically, the chamber consisted of a pump and a blower that can collect and blow dust continuously. With advice from SIRIM, talcum powder which has particle sizes of 20 microns was used to resemble the dust, and after churning up to 40 kilograms of it the MPOC successfully passed through the test.
Besides that, the MPOC had undergone thermal test that made mandatory to keep the temperature inside the cabinet not more than 10 degrees higher tahn that of the ambient temperature. In complying with the requirement, PAN simulated the worst case scenario with heat load of 700 watts from equipment and 300 watts from the rectifier compartments. The temperature was monitored via 10 probes located inside the MPOC. Heat sinks were used as medium to transfer the heat while fans were used as the catalysts to accelerate cooling process for the cabinet.
Subsequently the MPOC succeeded through rain-test as well as the 100 kologram load test on the battery tray. Pernec provides a good teams and engineer to be successfully securing the MPOC projects. |