HCI/HCM 634 is a range of 4 - pole, single or 2-bearing AVR controlled generators. Engine adaptors to SAE 00, 0 & 1/2, and coupling discs to SAE 14, 18 & 21 are offered for HCI/IICM 634. Windings offered are 6-wire reconnectable as standard, a 12-wire reconnectable alternative is available for some applications - refer to factory for details. Voltages available range up to 690 V. IP22 enclose protection is standard, IP23 is optional at reduced ratings.