The SDM120DB - MID is a Direct Connected (with pulsed output), Single-Phase MID electric energy with 5+1 digital LCD display for measuring kWh. The SDM120DB uses advanced special recording integrated circuit with high precision. It is used in AC single-phase watt-hour with its recording frequency of 50Hz, It is highly accurate, durable, reliable, low power consumptive, without reversion, creep-proof, anti-tampering, and bilateral recording with strong overloading capability. It conforms to the related requirements of GB/T17215 321-2008, and pass EMC and LVD in world famous Lab. 

Technical Data 

• Voltage AC (Un)                                           230V
• Voltage range                                               -30% to +30% of Un
• Base current(Ib)                                           5A
• Max current(Imax)                                        45A
• Starting current (mA)                                    0.4% of Ib
• Power consumption of current                     ≤2W / 10VA
• Frequency (Hz)                                            50/60 (±10%)
• Accuracy                                                      1.0
• Standards                                                     IEC 62053-21                                              
• Memory back-up                                           EEprom
• Operating                                                     -10°C to +50°C
• Storing                                                          -30°C to +70°C
• Upper material                                              Polycarbonate
• Lower material                                              Polycarbonate/glass fibre          
• Operating humidity                                       75%
• Storing humidity                                            95%
• Protection against  dust and water               IP40
• Insulating encased meter                             II
• AC voltage withstand                                   2KV for 1 minute
• Impulse voltage withstand                           6KV – 1.2µS waveform                                        
• Current withstand                                        30Imax for 0.01s
• Pulse output rate                                         2000 imp/kWh