air cool reflector /250w HPS/MH ballast/ US style

- same quality as QUANTUM -convertable for HPS and MH lamps -Highlumen efficiency -Low power consumption -Protection functions:open circuit protection, short circuit protection, ignnition failure protection, over heat protection, -Completely silent: no more humming and buzzing - Approval: UL,CUL, EMC, ROSH -Input power:270W -Output power:250W - Input voltage: Ac110V Ac220V Ac108-268V -Max input current: 1.6A -Input frequency: 50Hz 60Hz -Output frequency:25K 100K -Diming: TD/ND -Max THD: <10% - Power factor:>0.97 -CCF: <1.7 -Efficiency of unit :>90% - Operation temperature:-30 +55°C -Output short protection: avaliable -Open circuit protection: available -Ignition failure protection: available -Energy saving rate: 30% (compare with magnetic ballast)