Explosion-proof Linear Electric Actuators / LE Series
LE-250
- LE-250 explosion-proof linear electric actuator is designed to provide thrust force 250 kg-f (2.45 kN) and the maximum adjustable stroke length is 50mm / 2 inch. It is standardized with modulating control suitable for globe valves, gate valves and linear travel devices to be applied to HVAC and industrial processes, especially for working at high temperature environment.
| Item | LE-250 |
|---|---|
| Thrust (kgf) | 250 |
| Thrust (lbf) | 550 |
| Thrust (kN) | 2.45 |
| Flange (ISO 5210) | F07 |
| Max. Stroke (mm) | 50 |
| Max. Stroke (inch) | 2 |
| Run Speed (mm/sec) | 0.46 |
| Run Speed (inch/sec) | 0.018 |
| Manual Override | Hand-Wheel |
| Weight (kg) | 10.5 |
| Weight (lb) | 23.5 |
- Enclosure conforms to IP68 (7m / 72 hrs) with explosion protection.
- Self-locking drive system.
- DC motor equipped.
- External stem position indicator.
- Low-power consumption.
- Manual operation can be applied in case of power outage.
- Built-in thermal protection prevents motor burnout.
Control：
- Standard：Modulating
- Options：Floating
Conduit entrance :
- Standard: 1/2 ” NPT
- Optional: 3/4” NPT、M20、M25
| Marking | Ambient Temperature |
|---|---|
| Ex db IIB T4 Gb | -30°C ~ +70°C (-22°F ~ +158°F) |
| Ex db IIB T4 Gb | -30°C ~ +70°C (-22°F ~ +158°F) |
In accordance with IEC 60079-0, IEC 60079-1, IEC60079-31
China Explosion-proof Certification - CNEx / CCC| Marking | Ambient Temperature |
|---|---|
| Ex db IIB T4 Gb | -30°C ~ +70°C (-22°F ~ +158°F) |
| Ex tb IIIC T130 °C Db | -30°C ~ +70°C (-22°F ~ +158°F) |
In accordance with IEC 60079-0, IEC 60079-1, IEC60079-31
EU Explosion-proof Certification - ATEX| Directive | Marking | Ambient Temperature |
|---|---|---|
| ATEX II 2GD | Ex db IIB T4 Gb | -30°C ~ +70°C (-22°F ~ +158°F) |
| ATEX II 2GD | Ex tb IIIC T130°C Db | -30°C ~ +70°C (-22°F ~ +158°F) |
In accordance with IEC 60079-0, IEC 60079-1, IEC60079-31
International Explosion-proof Certification - IECEx| Marking | Ambient Temperature |
|---|---|
| Ex db IIB T4 Gb | -30°C ~ +70°C (-22°F ~ +158°F) |
| Ex tb IIIC T130 °C Db | -30°C ~ +70°C (-22°F ~ +158°F) |
In accordance with IEC 60079-0, IEC 60079-1, IEC60079-31
CSA North American Hazardous Area Certification - Zone System| Code | Class | Permitted Zone | Type of Protection | Group | Temperature Class | Ambient Temperature |
|---|---|---|---|---|---|---|
| AEx / Ex | I | 1 | db | IIA, IIB | T4 | -30°C~+70°C(-22°F~+158°F) |
| AEx / Ex | II | 21 | tb | IIIA,IIIB,IIIC | T130°C | -30°C~+70°C(-22°F~+158°F) |
In accordance with CAN / CSA-C22.2 No. 60079-0, CAN / CSA-C22.2 No. 60079-1, CAN / CSA-C22.2 No. 60079-31, UL 60079-0, UL 60079-1, UL 60079-31
- CSA - Zone system
- TS
- IECEx
- ATEX
- CNEX / CCC
Space heater
A space heater can increase the internal temperature and keep dry inside actuator to avoid the freezing lubricant and moisture causing actuator failure under low temperature or high humidity. Heater is not recommended if the ambient temperature is above 35 degrees℃ (95 degrees℉). However, when the temperature varies much from day to night or between summer and winter, heater and thermostat (25±5 degrees℃ / 77±41 degrees℉) are recommended.
Heater thermostat
The option can switch the heater off when the temperature inside the actuator is over 25°C / 77°F.
Floating controller
An external switch is applied to provide either two-position or floating control to the actuator.
1. Thrust (kg)
- 250, 500, 1000, 2000
2.Voltage
- D24– 24 V DC; 24 – 24 V AC
- 110 – 110 V AC; 120 – 120 V AC
- 220 – 220 V AC; 240 – 240 V AC
3.Control Method
- M – Modulating
- F – ON/OFF-Floating
