SANS 10142 PAGE 141 Flashcards
What are electric motor drives used for?
Domestic and industrial applications
Electric motor drives come in various sizes, types, and construction arrangements.
What are the two types of speed requirements for electric motor drives?
Constant speed and variable speed
Applications may require different speed control depending on their needs.
What must be done during the design planning for a new drive installation?
Design of control circuits and main supply circuits
Proper circuit design is necessary to ensure effective operation.
What factors must be considered when planning an electric drive installation?
- Safety regulations
- Mounting methods
- Environmental conditions
- Protection requirements
Each factor plays a crucial role in ensuring a successful installation.
What is the first step in the planning procedure for installing an electric drive?
Collect information on the drive’s intended use
This helps in selecting the correct drive for the installation.
What determines the characteristic requirements of the motor and drive?
The load torque requirements
The load coupled to the motor influences the selection of the motor.
What speed considerations should be taken into account for electric drives?
- Starting at low speed
- Gradual speed increase
- Constant speed requirement
- Need for gear, chain, or belt drives
Different applications may have different speed control needs.
What special attention should be given when installing a motor drive in extreme environmental conditions?
The motor casing
The casing must be suitable to protect the motor from harsh conditions.
Fill in the blank: The _______ requirements of the load will determine the motor specifications.
load torque
True or False: All electric drives require the same installation procedures.
False
Installation procedures vary based on specific requirements and conditions.
