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Which type of energy meter is provided for load demand more than 150 HP?
LT
LT MD
HT
3 Phase
HT
For industrial loads exceeding 150 HP (approximately 112 kW), the electricity distribution companies mandate the use of High Tension (HT) metering. This ensures accurate measurement at the supply voltage level, reducing the complexity and errors associated with large current-carrying low-voltage conductors.
For industrial loads exceeding 150 HP (approximately 112 kW), the electricity distribution companies mandate the use of High Tension (HT) metering. This ensures accurate measurement at the supply voltage level, reducing the complexity and errors associated with large current-carrying low-voltage conductors.
P=3тАЛVLтАЛILтАЛcos╧Х тАФ Total real power measurement
CT┬аRatio=IsecondaryтАЛIprimaryтАЛтАЛ тАФ Current transformer transformation ratio
In HT metering, Potential Transformers (PTs) and Current Transformers (CTs) are used to step down the high voltage and heavy current to manageable values for the energy meter. This allows the use of standard measuring instruments while effectively handling the high power demand of the consumer, ensuring safety and precision in billing.
HT supply is typically provided at 11 kV or 33 kV for large industrial consumers.
150 HP is approximately equivalent to 112 kW of power demand.
HT metering eliminates the need for very heavy cross-section cables required at low voltage levels for high current capacity.
Lower line losses due to transmission at higher voltage
Higher measurement accuracy for heavy industrial loads
Reduced conductor material requirement
Requires high-voltage insulation
Installation cost is significantly higher than LT setups
Requires specialized safety maintenance
Large industrial factories
Large commercial complexes
Bulk supply consumers
Most state electricity boards specify HT metering for loads exceeding 75 kW or 100 HP.
Option B (LT MD) refers to Low Tension Maximum Demand meters, which are generally used for smaller commercial or light industrial consumers.
C is correct тАФ Loads exceeding 150 HP require HT metering to ensure accurate energy measurement at the high-voltage distribution level.
Always remember that electricity distribution classification in India is primarily based on connected load or maximum demand; industrial loads above 100-150 HP almost universally fall under HT tariff categories.