Our H/Z are continuous power (prime power), open type or sound-proof, fully pieced together in European - Japanese or American factories that have ISO 9001:2000 validation and contain a power engine with tropical type coolant and same axis generator, connected via a flexible metal connector on a metal base. Our H/Z are accompanied by accumulators enough for 6 attempts to start them. The couples can sustain 70% of the prime power on one step load while they charge the remaining 30% within 5 seconds. our H/Z are fully wired with the panel on the same metal base. In this base is a metal sealed box, in which lies an automatic overcharge and short circuit protection switch.