Single Phase Smart Prepayment Meter
                                                                 Single Phase Smart Prepayment Meter(DDSD101- J6) 
TECHNICAL SPECIFICATIONS
Description  Value
   
Voltage  
Reference voltage 230V 
operating voltage range  70%-120%Un 
   
Current  
Basic current  5A 
Maximum current 80A,100A 
Starting current 0.4%Ib 
   
Accuracy Primary channel : Class 1.0 for kWh
Sub-channel :    Class 1.0 for kWh 
   
Frequency  
Rated frequency (fn) 50Hz
Frequency range ±2% 
   
Pulse constant Default:   1000 imp/kWh 
   
Temperature  
Normal Operation range -25℃ to +55℃
Limit operation range   -40℃ to +70℃
Limit range for storage and transport -25℃ to +85℃ 
   
Humidity 30%~95% non-condensing 
   
Power Consumption  
Power consumption in voltage circuit (active)  ≤2 W
Power consumption in voltage circuit (apparent) ≤10 VA
Power consumption in current circuit ≤1 VA 
   
Insulation Strength   
AC voltage test 4kV
Surge Withstand  6kV
Protection class  Class II
   
Electromagnetic Compatibility   
Electrostatic discharges Contact 8kV, air 15kV
Fast transient burst 4kV
Immunity to Impulse voltage (IEC62052-11) 6 kV
Immunity to electromagnetic RF fields 10V/m at reference current, 30V/m without current 
   
Protection degree  IP54 Indoor
   
Breaker Bi-stable relay 
 Lifetime  5000cycles at Imax PF=1.0 and PF=0.5L 
Performance UC2 
Maximum switching Voltage 250VAC 
Maximum switching current 80A
Maximum switching power 20.0kVA 
Lifetime ≧ 15 years