{"id":4001,"date":"2026-10-12T07:57:19","date_gmt":"2026-10-12T07:57:19","guid":{"rendered":"https:\/\/acrel.pl\/?post_type=product&p=4001"},"modified":"2026-10-12T08:31:30","modified_gmt":"2026-10-12T08:31:30","slug":"apm521-multifunctional-panel-meter","status":"publish","type":"product","link":"https:\/\/acrel.pl\/ru\/product\/apm521-multifunctional-panel-meter\/","title":{"rendered":"APM521 Multifunctional Panel Meter"},"content":{"rendered":"\n

Features<\/h2>\n\n\n\n

\u25cf Cut-Out Size: 88*88mm<\/p>\n\n\n\n

\u25cf Full Power Measurement<\/p>\n\n\n\n

\u25cf Power Quality Analysis<\/p>\n\n\n\n

\u25cf Panel Mounted or Din Rail Installation (optional \u201cR\u201d)<\/p>\n\n\n\n

\u25cf Support Modbus-RTU \/ Modbus-TCP Communication (optional \u201cE\u201d)<\/p>\n\n\n\n

\u25cf Accuracy: Class 0.2S (with 1A\/5A CT), Class 1 (with 100mV Rogowski Coil)<\/p>\n\n\n\n

\u25cf Application: Building EMS and complete set cabinet, Malaysia Max Demand Monitoring<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Technical Parameters<\/h2>\n\n\n\n
Item<\/strong><\/td>Performance Parameters<\/strong><\/td><\/tr>
<\/td>Voltage<\/td>Rated voltage (UL\u3001CE)<\/td>66VAC L-N 115VAC L-L 230VAC L-N 400VAC L-L 277VAC L-N 480VAC L-L 400VAC L-N 690VAC L-L<\/td><\/tr>
Rated voltage (CPA)<\/td>3P3L<\/td>3P4L<\/td><\/tr>
3x100V 3x380V 3x690V<\/td>3x57.7\/100V 3x220\/380V 3x400\/690V<\/td><\/tr>
Overload<\/td>1.2 times rating (continuous); 2 times the rating for 1 second<\/td><\/tr>
Power consumption<\/td><1VA<\/td><\/tr>
Accuracy class<\/td>Error \u00b10.2%<\/td><\/tr>
Current<\/td>Rated current (UL\u3001CE)<\/td>1A\u30015A<\/td><\/tr>
Rated current (CPA)<\/td>0.015-0.075(6)A (Active energy); 3X1(6)A (Reactive energy)<\/td><\/tr>
Overload<\/td>1.2 times rating (continuous); 10 times the rating for 1 second<\/td><\/tr>
Power consumption<\/td>< 0.2VA<\/td><\/tr>
Accuracy class<\/td>Error \u00b1 0.2%<\/td><\/tr>
Power<\/td>Active, reactive, apparent power, error \u00b1 0.2%<\/td><\/tr>
Grid frequency<\/td>UL\u3001CE<\/td>50Hz \/ 60Hz, error \u00b1 0.2%<\/td><\/tr>
CPA<\/td>50Hz, error \u00b1 0.2%<\/td><\/tr>
Response rate<\/td>\u2264 200ms (voltage, current, power)<\/td><\/tr>
\u2264 1s (electrical energy)<\/td><\/tr>
Measurement category<\/td>66ULN (\uff0b20%) 115ULL (\uff0b20%) CAT\u2162230ULN (\uff0b20%) 400ULL (\uff0b20%) CAT\u2162277ULN (\uff0b20%) 480ULL (\uff0b20%) CAT\u2162400ULN (\uff0b20%) 690ULL (\uff0b20%) CAT\u2161<\/td><\/tr>
Metering<\/td>Electric energy<\/td>Active energy: Class D (0.2S); Reactive energy (Class 2 accuracy)<\/td><\/tr>
Auxiliary power supply<\/td>AC\/DC 85-300V<\/td><\/tr>
power consumption \u2264 4W\u300110VA<\/td><\/tr>
Electromagnetic compatibility<\/td>Electrostatic discharge immunity Class IV<\/td><\/tr>
Electrical fast transient burst immunity Class IV<\/td><\/tr>
Surge (shock) immunity Class IV<\/td><\/tr>
Security<\/td>Power frequency withstand voltage<\/td>Between communication and signal input, AC4kV 1min<\/td><\/tr>
Insulation resistance<\/td>Input and output terminals to casing >500M\u03a9<\/td><\/tr>
Communication<\/td>Interface and communication protocol<\/td>RS485 interface and Modbus RTU protocol<\/td><\/tr>
Communication address range<\/td>Modbus RTU: 1~ 247;<\/td><\/tr>
Baud rate<\/td>Support 1200bps-38400bps<\/td><\/tr>
Environment<\/td>Operating temperature<\/td>-40\u2103\uff5e+70\u2103<\/td><\/tr>
Storage temperature<\/td>-40\u2103\uff5e+80\u2103<\/td><\/tr>
Relative humidity<\/td>\u226495% (without condensation)<\/td><\/tr>
Altitude<\/td>\u22642000m<\/td><\/tr>
\u22652000m, \u22645000mOnly applicable to the power supply with the voltage range of AC\/DC 85-265V and the voltage below 277\/480V.<\/td><\/tr>
Installation environment<\/td>Indoor use (dry location)<\/td><\/tr>
IP rating<\/td>IP54 (Front panel), IP30 (Body)<\/td><\/tr>
Pollution degree<\/td>Class 2<\/td><\/tr>
Overvoltage categories<\/td>OVC III<\/td><\/tr>
Reference standard<\/td>UL<\/td>CAN\/CSA C22.2 NO.61010-1-12 UL 61010-1 CSA C22.2 No.61010-2-030 UL 61010-2-030<\/td><\/tr>
IEC\u3001CE<\/td>IEC 61010-1 IEC EN 61010-2-30<\/td><\/tr>
CPA<\/td>GB\/T17215.321-2021 GB\/T17215.323-2022<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Dimension<\/strong><\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Panel Mounted<\/strong><\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Din Rail Installation<\/strong><\/p>\n\n\n\n

Wiring<\/strong><\/h2>\n\n\n\n

Wiring sample of current and voltage<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Typical Connection<\/strong><\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"APM521 network power meter (hereinafter referred to as the meter) is designed according to IEC international standards, featuring full electrical quantity measurement, energy statistics, power quality analysis, event logging functions, and network communication capabilities. It is primarily used for comprehensive monitoring of power supply quality in power grids. This series of meters is equipped with DI\/DO modules and AO modules that offer a wealth of functions, allowing for flexible implementation of full electrical quantity measurement and monitoring of switch statuses in electrical circuits.","protected":false},"featured_media":4017,"template":"","productcat":[3,14,37],"class_list":["post-4001","product","type-product","status-publish","has-post-thumbnail","hentry","productcat-power-monitoring","productcat-ul-energy-meter","productcat-ac-energy-meter"],"yoast_head":"\nAPM521 Multifunctional Panel Meter - ACREL<\/title>\n<meta name=\"description\" content=\"Full electricity&energy parameter monitoring and power quality analizing with optional built-in SD card for data storage [function code -E, check in datasheet for more detail]\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/acrel.pl\/ru\/product\/apm521-multifunctional-panel-meter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"APM521 Multifunctional Panel Meter - 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