module 4.7

What is the common term for a fault or abnormal excessive current caused by short-circuit?

• problem

• inrush current

• open circuit

• overload

What are the two major concerns when designing and installing a switchgear?

• economical and durable

• safety and reliability

• rugged and simple

• non-dependable and robust

Which device use in switchgear to allow the unit to operate safely and prevent you from touching or removing a CB while it is energized?

• overload device

• disconnect switch

• Interlocking

• safety switch

What is called for switching unit that can handle large amounts of power, considerably larger than the basic circuit breakers?

• Switchgear

• Inrush current

• Circuit Breaker

• Overload

121. What is the part of the switchgear CB’s that allows you to push the breaker into the compartment easily?

• Overload device

• Disconnect switch

• Interlocking

• Rollers

What is used to lift and fit heavy and bulky CB’s into its compartment?

• Lifting adaptor

• Levers

• Forklift

• Manual

The part of the switchgear CB’s that used to release the Interlocking devices is

• Levering device

• Inrush current

• Rollers

• Circuit Breaker

Refer to figure 9 Switchgear Breaker unit parts. Part # 3 is

• Roller

• Sensors

• Secondary disconnecting contacts

• Levering device arm remove position

Refer to figure Part # 4 is

• Roller

• Sensors

• Levering device arm remove position

• Secondary disconnecting contacts

121. Refer to figure Part # 7 is

• Roller

• Sensors

• Levering device arm remove position

• Secondary disconnecting contacts