Thiết bị truyền động hạt nhân SN Series (Weatherproof Quarter-turn Actuators), ĐẠI LÝ BERNARD CONTROLS VIỆT NAM

Thiết bị truyền động hạt nhân SN Series ( Qualified multi-turn actuators for inside containment )

Model: 

• SN6, SN6L, SN6LL, SN6LS
• SN14, SN14L
• SN30
• SN70
• SN175
• SN220
• SN600

Thông số kỹ thuật:

Casing:

•  Watertight at LOCA conditions (5,6 bars of waterstream).

 Mechanical:

•  Self-locking gearings at all speeds
•  Continuous gear drive from the motor down to the valve
•  Class H insulation motor
•  Unaffected by vibrations
•  No preventative maintenance required. Gearing is lubricated for lifetime

Maintenance:

•  Modular design to reduce exposure to radiation
•  Tightness testing device allows to check, on the spot, for the actuator proctection after any connection or maintenance operation
•  Common control box from SN6 to SN220 Handwheel without clutch release
•  Patented manual override system
•  Differential geardrive allows the handwheel to be operated without releasing a clutch beforehand (except for very low torque values on model SN6L)
•  The handwheel can therefore be operated under all conditions, even when a high torque is applied to the valve (i.e wedge gate valve closed tight)
•  Priority of electric command over manual override

Power:

• • Asynchronous motor with excellent starting torque over nominal torque ratio
• • On/Off operation: 40% motor duty rating with peak service conditions up to 360 starts per hour
• • Modulating class III : 50% motor duty rating with peak service conditions up to 1200 starts per hour
• • Motor easy to remove with intermediate connector

Connection:

• Pluggable connector with two configurations :
  •  BERNARD CONTROLS common control and power connector available on all models
  •  BERNARD CONTROLS separated connectors for control (plug-in 30 points with earth terminal for shielding) and power (plug-in 4 points including earth terminal) available on all models except SN6L(5)
• Auxiliary terminals available allowing the remote monitoring of power connector disconnection in the case of a dual connectors configuration
• External earth terminal
• Direct connection of large power cables up to 4 x 35 mm²
• Connectors have been designed to prevent any penetration of water steam from the cables (creepage distance, condensates removal,…)

Xem thêm chi tiết : TẠI ĐÂY