Class 0.5S Active Energy Accuracy
Class 0.5S (IEC 62053-22) active-energy measurement with ±0.2 % voltage and current accuracy supports high-precision power monitoring for distribution applications.
YTL72-200D 72 mm Panel-Mount Multifunction Power Meter with RS485
YTL72-200D is a 72 mm panel-mount multifunction digital power meter with dot-matrix LCD display. It supports CT input at 5(6) A, three-phase high-accuracy measurement (Class 0.5S), and RS485 communication with Modbus RTU and DL/T 645-2007 protocols. It provides full-parameter electrical measurement including voltage, current, energy, power and power factor, along with 10-type event alarms.
Panel Mount Design
3P4W / 3P3W (ARON)
5(6) A CT input rating
72 × 72 mm Frame size
RS485 Communication interface
−40°C to +70°C Operating temperature
Product Highlights
Built for clear, connected panel metering
RS485 Dual Protocol Communication
RS485 communication compatible with Modbus RTU and DL/T 645-2007 protocols. Default 115200 bps, 2-wire connection, supports up to 64 devices. Communication response time ≤100 ms.
Full-Parameter Electrical Measurement
Measures voltage, current, energy, active/reactive power, power factor, frequency and demand. Supports absolute-value, algebraic-sum and separate import/export metering modes.
10-Type Event Alarms
Supports alarms for current imbalance, overcurrent, overload, overvoltage, undervoltage, low battery, voltage imbalance, phase-sequence error, low power factor and voltage/current circuit faults.
Panel IP54, Wide Temperature Range
Panel IP54 protection with housing IP20. Operating temperature −40°C to +70°C for demanding distribution environments.
Compact 72 mm Frame Design
72 × 72 mm panel-mount frame with 66 × 66 mm cutout. Dot-matrix LCD with white backlight for clear multi-parameter display.
Applications
Applications and Selection Guidance
EV Charging Metering
Solutions for AC/DC charging, billing and charging platform integration.
Explore ApplicationSolar PV & ESS Metering
DC/PV monitoring for inverters, storage systems and distributed energy monitoring.
Explore ApplicationC&I Sub-Metering
Branch metering for buildings, factories, tenants and energy allocation.
Explore ApplicationData Center Energy Metering
Rack, cabinet and distribution power monitoring for data center operations.
Explore ApplicationTechnical Specifications
Technical Specifications
| Voltage connection | Direct / PT |
| Rated voltage | AC 3×57.7/100 V, AC 3×63.5/110 V, AC 3×230/400 V |
| Voltage tolerance | 0.8 to 1.15 Un |
| Current connection | CT |
| Basic current (Ib) | 5 A |
| Minimum current (Imin) | 0.05 A |
| Maximum current (Imax) | 6 A |
| Operating frequency | 50 Hz / 60 Hz |
| Meter constant | 10000 imp/kWh, 10000 imp/kvarh |
| Auxiliary power supply | AC 85–276 V, DC 95–350 V |
| Power consumption | ≤1 VA per phase; auxiliary ≤2 W, ≤10 VA |
| Voltage accuracy | ±0.2 % |
| Current accuracy | ±0.2 % |
| Frequency accuracy | ±0.02 Hz |
| Active power accuracy | ±0.5 % |
| Reactive power accuracy | ±2 % |
| Active energy accuracy | Class 0.5S (IEC 62053-22) |
| Reactive energy accuracy | Class 2 |
| Voltage / current harmonic accuracy | ±1 % |
| Communication interface | RS485 |
| Protocol | Modbus RTU and DL/T 645-2007 |
| Communication type | Bidirectional |
| RS485 configuration | Default: 115200 bps, 8 data bits, 2 stop bits, no parity; 2-wire; max. 64 connections |
| Communication response time | ≤100 ms |
| LCD display | Dot-matrix LCD (D), white backlight; menu key, left key, right key, confirm key |
| Metering function | Full parameter measurement: voltage, current, energy, power, power factor and demand |
| Metering mode | Absolute-value, algebraic-sum and separate import/export metering |
| Event alarms | Current imbalance, overcurrent, overload, overvoltage, undervoltage, low battery, voltage imbalance, phase-sequence error, low power factor, voltage/current circuit fault |
| Firmware upgrade | Local upgrade |
| Panel IP rating | IP54 |
| Housing IP rating | IP20 |
| Protection class | Class II |
| Wiring method | 3P4W, compatible with 3P3W (ARON) |
| Altitude | < 2000 m |
| Impulse withstand voltage | 6 kV |
| Frame size | 72 × 72 mm |
| Housing dimensions | 65.3 × 65.3 × 80.5 mm |
| Cutout dimensions | 66 × 66 mm |
| Applicable standards | GB/T 17215.211:2021 / GB/T 17215.321:2021 / IEC 62052-11:2020 / IEC 62053-22:2020 / IEC 61557-12:2021 |
Structure & Dimensions
YTL72-200D Wiring & Dimensions
Wiring
Dimensions
FAQ
Product FAQ
What is YTL72-200D?
YTL72-200D is a 72 mm panel-mount multifunction digital power meter with dot-matrix LCD display. It supports CT input at 5(6) A, three-phase high-accuracy measurement (Class 0.5S), and RS485 communication with Modbus RTU and DL/T 645-2007 protocols. It provides full-parameter electrical measurement including voltage, current, energy, power and power factor, along with 10-type event alarms.
What frame sizes are available?
YTL72 series uses a 72×72 mm frame (cutout 66×66 mm). YTL96 series uses a 96×96 mm frame (cutout 86×86 mm). The 96 frame also supports AC 3×400/690 V rated voltage.
What communication protocols does it support?
RS485 supports Modbus RTU and DL/T 645-2007 protocols with a response time of ≤100 ms.
What is the operating temperature range?
−40°C to +70°C. Suitable for demanding distribution environments when panel-mounted in an appropriately rated enclosure.
Product Downloads
Product Datasheet Download
Datasheet
YTL-72 Series Product Datasheet
Official YTL-72 series datasheet covering product overview, specifications, wiring and dimensions.
Download PDF- Product overview and features
- Technical specifications
- Wiring diagrams and dimensions
Need a Smart Metering Solution for Your Project?
Tell us your requirements and our team will provide a professional solution and quotation within 24 hours.
Quick ResponseReply within 24 hours
Expert SupportEngineer-to-engineer
Custom SolutionsProject-ready from spec
Long-term PartnerSingle point of contact
