VALVE ELECTRIC ACTUATORS

VALVE ELECTRIC ACTUATORS : 1. MAIN TECHNICAL PARAMETERS 1) Power supply: 380 V, 50 Hz Optional: 380 660 V, 50 or 60 Hz, specified when ordering 2) Service environment (1) Environmental temperature: -20 60; Optional: -40 +70 (2) Relative humidity: ≤90% (+25) (3) Enclosure protection: IP68 (4 meter below water surface for 68 hours) (4) Flameproof specification: Exd , ExdibBT4 and ExdibCT4. The ExdibCT4 is for special order. (5) Flameproof mark: Exd , ExdibBT4 and ExdibCT4, for hazardous zone with Class B C explosive gases of temperature groups T1 T4. 3) The motor is of short time duty. Rated operating time is 15 min. Insulation: Class F 2. GENERAL DESCRIPTION OF ACTUATOR CHANGZHOU-CDF (abr. as SND) non-intrusive intellectualized electric actuators are designed with introduced technology from Schneider and developed by cooperation. These mechanic-electronic products have been integrated advanced multi-control technologies such as absolute coding technology, sensor technology, bus-mastering technology, infrared remote control technology, LED, magnetic control switch and advanced manufacturing technology. SND Range products are units to control the operation of final control element (e.g. valves) in open control system. Among the rest, SND actuators of Range Z are used for the control of globe valve, gate valve, throttle valve, water gate and etc. And SND actuators of Range Q and DQ are used for the control of ball valve, butterfly valve, and damper etc. 3, FEATURES OF ACTUATORS 3.1, Non-intrusive design is audio-visual and easy to adjust, 3.2, Measurement of position and torque is accurate and reliable. 3.3, Provided with speed-changeable and slow closing functions 3.4, Comprehensive data recording 3.5, Self-diagnostic and self-adapting functions 3.6, Automatic phase-rotation-corrective function 3.7, Trouble-diagnostic function in operation 3.8, Functions of network transmission 3.9, Overheat-protection for electric motor 3.10, Transient reverse protection 3.11, Capable to carry out valve closing at high speed 3.12, Capable to compensate valve seating at high temperature 3.13, Enclosure protection of IP68 (4 meter below water surface for 68 hours) 3.14, Provided with two series products of normal model and flame-proof model 3.15, Small in size, light in weight and extensive in speed range.