APM521網絡電力儀表按IEC國際標準設計,具有全電量測量、電能統計、電能質量分析事件記錄功能及網絡通訊等功能,主要用于電網供電質量的綜合監控。該系列儀表配有功能豐富的DI/DO模塊、AO模塊,可以靈活實現電氣回路全電量測量及開關狀態監控。


測量參數 Measured parameters | 全電量測量 Total electrical measurement |
四象限電能、四象限無功電能、分相電能、視在電能、復費率電能 Four-quadrant energy、Four - quadrant reactive electric energy、Split phase electricity、Apparent energy、Multi-rate energy | |
脈沖輸出 Pulse output | 總有功、總無功電能脈沖輸出 Total active power, total reactive power electrical energy pulse output |
需量 Demand | 三相電流、有功功率、無功功率、視在功率實時需量及最大需量(包含時間戳),上月最大需量(包含時間戳) Three-phase current, active power, reactive power, apparent power real-time demand and maximum demand (including timestamp), last month's maximum demand (including timestamp). |
極值統計 Extreme value statistics | 電流、線電壓、相電壓、有功功率、無功功率等電參量本月極值和上月極值(包含時間戳) Current, line voltage, phase voltage, active power, reactive power and other electrical parameters extreme values of this month and last month (including time stamps) |
電能質量 Power quality | 電流、線電壓、相電壓不平衡度 Unbalance of current, line voltage, phase voltage |
電壓相間角度、電流相間角度 Voltage phase angle, current phase angle | |
電壓電流總(奇、偶)諧波含量 Total (odd, even) harmonic content of voltage and current | |
電壓電流分次諧波(2-63次)含量 Harmonic content of voltage and current (2-63 times) | |
電壓波峰系數 Voltage peak coefficient | |
電話波形因子 Telephone waveform factor | |
電流K系數 Current K-factor | |
矢量圖 Vector | |
電壓、電流實時波形 Voltage and current waveform | |
基波電壓、基波電流、基波功率因素 Fundamental voltage ,current and power factor | |
電壓偏差、頻率偏差 Voltage deviation, frequency deviation | |
正序、負序、零序電壓 Positive - sequence voltage, negative - sequence voltage, zero - sequence voltage | |
正序、負序、零序電流 Positive - sequence current, negative - sequence current, zero - sequence current | |
凍結電能 Frozen electric energy |
24 - hour frozen electric energy, 31 - day frozen electric energy, December frozen electric energy, regular - time frozen electric energy |
事件記錄 Event logging | DIDO記錄,可記錄最近128條DIDO記錄 DIDO records, which can record the last 128 DID records |
報警記錄 Alarm logging | 可記錄最近128條報警記錄 The last 128 alarm records can be recorded |
通訊 Communication | Modbus - RTU協議、DL/T 645-2007規約 Modbus - RTU protocol, DL/T 645-2007 statute |
選配功能 Optional features | 4路開關量輸入,2路開關量輸出 4-channel digital input and 2-channel digital output |
2路模擬量輸出,4-20mA 2 channels of analog output, 4-20mA | |
擴展第二路RS485通訊,Modbus - RTU協議 Expand the second RS485 communication channel with Modbus - RTU protocol | |
擴展以太網通訊,MODBUS-TCP協議,FTP協議 Expand Ethernet communication with the MODBUS-TCP protocol,FTP protocol |


UL認證面板多功能電表
UL認證面板多功能電表