Accessory 타입 = EMC Filter Kit For Use With = ATV9 Altivar ATV11 / 12 EMC Filter. EMC filters for use with Altivar ATV11 ; 12 drive series designed for compliance with the requirements of IEC/EN 61800-3. Available in categories C1, C2 ; C3 in environment 1 (Public Network) or Environment 2 (Industrial Network) depending on your chosen drive rating