IN JOB QATAR

4. Prevents over-heating of Boosters. 5. Protects the Booster against overload and excessive pressures.

6. Offers complete protection to motor against over voltage, under voltage, over current,

Over-heating, ground fault. 7. Eliminates the needs of separate starter and overload relays for the Motor.

1. 8. Automatically adjusts the speed of Booster between low and high range set giving high. pumping speeds with relatively low input power.
2. The Electronic Variable Frequency Control Drive is a microprocessor based electronic drive which is specially programmed to meet the demands of the Booster allowing it to operate directly from atmosphere along with suitable fore pump. Conventionally, Boosters can be started only after achieving fore vacuum in the range of 30 - 100 Torr, as they are not recommended for direct discharge into the atmosphere. Use of Pressure Switch, Hydro kinematic drive and by pass valves is necessary to prevent the overloading of the Booster. However with the installation of Electronic Variable Frequency Control Drive all the conventional methods can be bypassed since the drive is programmed to regulate the Booster speed automatically, keeping the load on motor within permissible limits. This allows the Booster to start simultaneously with backup pump. When the backup-pump and Booster are started the drive reduces the Booster speed to the pre-set levels and as the vacuum is created the Booster speed picks up, reaching the final pre-set speed, giving most optimum performance over the entire range. Since all the parameters are easily programmable, one can adjust the booster pumping speeds to match the system requirements easily and quickly. The drive limits the current to the motor and safeguards the motor against over voltage, under voltage, electronic thermal, overheat ground faults. i.e. protects the motor against all possible faults. External computer control over all aspects of booster performance is possible via RS485 serial interface built into the drive electronics. This enables the Booster to be integrated into any computer-controlled operating system.

To know more about this site visit this site:

Posted by Someone on April

Comments (0)       Read more

The major advantages are:-

(a) Can be integrated with any installed vacuum system such as Steam Ejectors, Water Ring Pumps, Oil Sealed Pumps, Water Ejectors, etc.