TYPE DD28 Kilowatt-hour Meter

APPLICATION
TYPE DD28 Kilowatt-hour meter, measure up to GB/T15283-94 (IEC521-88) , it’s used for family energy consumption calculation.

MAINLY TECHNICAL DATA
Rated voltage : 220V
Standard current : 1:2:2.5:3:5:10:20:25:50A
Rated max. current : twice of standard current
Rated frequency : 50Hz
Current coil with full-loading consumption (appro.) is : 0.6W
Insulation testing voltage : 2kv
Net weight : 0.9kg
Outer sizes : 158×115×105mm
Votage coil consumption under condition of rated voltage is :1.1WMax.

rotation speed of rotation component (under condition of standard current) is : 22 circuit/minute
Starting current (% of standard current) : 0.5
Temperature modulus (cosf=one hour) : <1.0%10°C

USAGE
Kilowatt-hour meter must be assembled fixed on the wall non-shaking or on switch board when assembling must guarantee the leaning to apeak position not more than 1°.On the places with dirty and have possible to damage machinery, Kilowatt-hour meter must be placed on protecting closet.The voltage connected to Kilowatt-hour meter must measured up to rated value, the current not exceed rated max. current. It’s installed and dismantled for testing or sealing only authorized departments on the scenes.

CONNECTION AS PER CONNECTION DIAGRAM:
            
Direct connection                               CT connection