Question
Thermal overload relay is provided in a starter to protect the motor against
The correct answer is
Excess current
This condition is known as an overload or excess current. When the motor draws excess current (an overload), the heating elements generate significantly more heat. This mechanism effectively protects the motor winding insulation from damage caused by overheating due to sustained excess current.
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Important Questions from Circuit Breakers
L series MCBs can be used effectively in:
Fusing factor of fuse is always
What is one of the functions of circuit breakers in a substation?
- For below 400 KV systems, the circuit breaker is designed to withstand ______above the normal system voltage.
If Ic is the critical current and Zo is the surge impedance, the basic impulse insulation level can be calculated as
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