Applies to commercial refrigerated display cabinets including: self-contained commercial refrigerated cabinet for selling and displaying purpose; closed type self-contained refrigerated beverage display units in stores hotels and restaurants; solid door commercial freezer and self-contained commercial cabinets for non-retailing use.
GB 30721-2014 Minimum allowable values of energy efficiency and energy efficiency grades for water-source -ground-source- heat pumps
水(地)源热泵机组能效限定值及能效等级
GB 19762-2007 Minimum allowable values of energy efficiency and evaluating values of energy conservation of centrifugal pump for fresh water
清水离心泵能效限定值及节能评价值
Applies only to single stage single suction clear water centrifugal pumps, single stage double suction clear water centrifugal pumps, and multiple stage clear water centrifugal pumps. This standard does not apply to other types of pumps.
This policy applies to single-phase or three-phase waste submersible motor-pumps that are used for carrying sewage or mixed liquid that contains sediment, fabrics, feces, and river sludge.
This policy applies to submersible pumps for deep well - an integrated system of pump and submersible motors used in well, which is used to extract clean water.
This policy applies to small-size submersible motor-pumps with rated power no larger than 22kW that are single- or three- phase and single- or multi- stage.
This policy is applicable to oil-immersed distribution transformers and dry-type distribution transformers with three-phase 10 kV voltage level, non-excitation voltage regulation, rated frequency of 50 Hz and rated capacity of 30 kVA ~ 2,500 kVA; oil-immersed power transformers with 35 kV ~ 500 kV voltage level, rated frequency of 50 Hz and rated capacity of 3,150 kVA and above; oil-immersed transformers and dry-type transformers with three-phase 6 kV ~ 35 kV voltage level, non-excitation voltage regulation, rated frequency of 50 Hz and rated capacity of 500 kVA and above for photovoltaics, wind power and energy storage on the new energy power generation side; oil-immersed transformers with three-phase 66 kV voltage level, non-excitation voltage regulation, rated frequency of 50 Hz and rated capacity of 3,150 kVA ~ 20,000 kVA for photovoltaics, wind power and energy storage on the new energy power generation side. This policy is not applicable to inflatable transformers, tower transformers and engine room transformers.
This document specifies the minimum allowable values of energy efficiency, the energy efficiency grades and test methods for power transformers. The policy applies to oil-immersed and dry-type distribution transformers. It will enter into effect on 1 February 2025.
Applies to external power supplies which convert AC current with 220V and 50Hz to single voltage DC -no higher than 36V- or single voltage AC -no higher than 36V- current.It applies to products with rated output power no larger than 250W. Does NOT apply to DC-DC transformer.