Explosion-Proof Spring Return Fail-Safe Electric Actuators / SE Series
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Product OverviewSun Yeh explosion-proof electric spring return fail-safe actuators, in addition to normal function (floating control, two-position control, modulating control) are designed to provide fail-safe positioning of valves and dampers upon loss of voltage supply. A mechanical spring set is utilized to position the controlled device to either the fully OPEN or fully CLOSED position, without any external power source. For two-position type actuator, a mechanical BUFFER is employed at the end of the spring stroke, in order to reduce the dynamic effects of the spring return system. A clutch-less and lever-less manual override is optional for standard units to provide full-time manual positioning of the controlled device. The SE series explosion-proof spring return fail-safe electric actuator is structured as flame-proof and combustible dust-proof. The directive and standards marking is II2GD Ex db IIB T4 Gb, Ex tb IIIC T130°C Db. where it is classified as Zone 1 or Zone 2, containing Group IIA and Group IIB gases, Zone 21 or Zone 22, containing the combustible dust atmosphere or a mixture of explosive gas atmospheres and combustible dust atmospheres. Temperature group T1 to T4. |
Model | Torque | Motor Power | Weight | Mounting Base | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
N•m | in•lb | Standard | W / Manual Override | Flange Type | Shaft | Depth of Shaft | |||||||
W | kg | lb | kg | lb | ISO 5211 | mm | inch | mm | inch | ||||
SE-500 | 50 | 445 | 50 | 28 | 62 | 38 | 84 | F07 | 17 | 0.669 | 30 | 1.181 | |
SE-1300 | 130 | 1150 | 130 | 59 | 130 | 76 | 168 | F10 | 22 | 0.886 | 41 | 1.614 | |
SE-2000 | 200 | 1770 | 130 | 97 | 214 | 137 | 302 | F12 | 27 | 1.063 | 45 | 1.772 | |
SE-2600 | 260 | 2300 | 130 | 97 | 214 | 137 | 302 | F12 | 27 | 1.063 | 45 | 1.772 |
Note:Motor power is based on 110VAC, 60Hz.