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Refrigerator Metrics & Definitions

Energy Performance

Daily Energy Consumption [kWh/day]
Amount of energy consumed over a period of 24 hours with the fresh food compartment temperature set at an average of 4°C. Daily energy consumption is conducted at various ambient temperatures to simulate refrigerator performance in different climate zones.

Freezing capacity [hours]
Time that the product needs to cool the average temperature of water bottles to -6°C. The test is only applicable to refrigerator-freezer combination units.

16°C ambient temperature
Tests conducted at 16°C ambient temperature to simulate the normal climate class.

32°C ambient temperature
Tests conducted at 32°C ambient temperature to simulate the subtropical climate class.

43°C ambient temperature
Tests conducted at 43°C ambient temperature to simulate the tropical climate class.

Quality & Durability

Pull Down [hours]
Time required to lower the temperature of a refrigerator compartment from ambient temperature (32°C) to a desired cooling temperature (4°C).

Autonomy [hours]
Duration of time that a product can keep a sealed fresh food compartment under 12°C without input of power.

Over-Voltage Condition
Verify product’s ability to withstand voltage spikes and if a high-voltage protection device is active. Product is tested with an increased voltage (20% increase from the manufacturer’s rated input voltage).

Under-Voltage Conditions
Verify product’s ability to function with insufficient voltage and if a low-voltage protection device is active. Product is tested with a decreased voltage (10% decrease from the manufacturer’s rated input voltage).

Safety & Consumer Protection

Warranty [months]
Duration of the consumer-facing product warranty that covers manufacturing defects under normal use.

These metrics are defined in the Global LEAP Off-Grid Refrigerator Test Method.

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