OTHER: CRE CEP-2
Module batteries equipped with resistors armored electrical built in steel tube 8mm in diameter with fins 25×50 mm in the same material and quick fastener screw and M4 screw terminals . Resistances conceived especially for applications ,aeraulic . They are mounted in frame and placed on a channel to facilitate their eventual disassembly .
All batteries are supplied with two safety thermostats , one reset automatic and one manual reset .
The batteries are built using resistors power with unit power of 1000 , 1500, 2000 and 3000 that allow build batteries W with wide range of potential available ,distributed by 2 or 3 levels