YFM2E-250 Series Intelligent Measuring Switch
This intelligent measuring switch has many iot sensing functions suchas HPLC communication, high-precision AC sampling, power supply relationship topologyidentification, metering box management, power theft warning, power outage event reportingline loss analysis and judgment, terminal temperature detection, automatic fault diagnosisetc.
Specification Parameter
| Model number | YFM2E-250 |
| Number of poles | 3 |
| Connection mode | Three-phase four-wire |
| Rated operating voltage Ue(V) | AC 400V |
| Rated current In(A) | 125,160,200,250 |
| Rated insulation voltage Ui(V) | 800 |
| Rated impulse withstand voltage Uimp(kV) | 8 |
| Rated operating short-circuit breaking capacity lcs(kA) | L：25kA;M：36kA |
| Rated limit short-circuit breaking capacity Icu(kA) | L：36kA;M：50kA |
| Icw(kA) | 3kA/1s |
| Category of use | B |
| Mechanical life | 8000 |
| Electrical life | 5000 |
| Overall dimensions(mm)(L×W×H) | 180×107×100 |
| Mounting dimension | 141*35(4×φ4.5) |
Intelligent measurement switch connecting wire sectional area selection
| Rated current(A) | 125 | 160 | 200 | 250 | |
| Cable section(mm²) | 50 | 70 | 95 | 120 | |
Intelligent measuring switch(characteristic current)terminal and mounting screw tightening torque
Model number Thread diameter(mm) Torque(N ·m) YFM2E-250 Wiring screw M8 12 Mounting screw M4 4
Product Advantage
Multiple protection functions protect lines andpower equipment, and detection and monitoring at the load end can reduce grid operation andmaintenance costs and provide the necessary data for future energy efficient systems.
1)The elevation oftheinstallation site is less than 2000m;
2)Ambient temperature -35℃~+70 c; The average value of 24h does not exceed +35 c;
3) Relative humidity: +23 'c should not be higher than 83%: +40 'c should not be higher than 93%;
4) The product can withstand the effects of humid air, salt spray, oil spray and mold;
5) The installation category of inteligent measuring switch (characteristic current) connected to the main loop isClass ll (distribution and control level), and the installation category of intelligent measuring switch (characteristiccurrent) not connected to the main loop is: Class ll (load level);
6)Pollution level:Level 3:
7)Protectionlevel:lp20:
8) The product is installed in a medium without explosion risk, and the medium is not enough to corrode metal anddestroy insulation gas and conductive dust, avoid use in places where rain and snow attack;
9) When the user's use conditions are more severe than the above, it should negotiate with the manufacturer.
Outline And Mounting Dimensions
