Huanghua Group Co., Ltd. 
HKM9E Intelligent Measurement Switch Of The Internet Of Things
Product overview
This series of intelligent measurment switch is suitable for AC 50Hz, ratedcurrent 250A (100A-250A adjustable), rated insulation voltage 1000V, rated workingvoltage 400V three-phase four-wire, neutral point directly grounded distribution network.
This measurement switch (characteristic current) has a number of loT sensingfunctions such as HPLC communication, high-precision AC sampling, topologyidentification of power supply relations, metering box management, electricity theftwarning, power failure event reporting, line loss analysis and judgment, terminaltemperature detection, automatic fault diagnosis, etc. It has overload long delay,short circuit short delay, short circuit instantaneous, over voltage and open phaseprotection functions. Various protection functions protect lines and power supplyequipment. Detection and monitoring of the load side reduces the operational costs
Model and its meaning
Work environment
Elevation of installation site S 2000 m;
Ambient temperature-35°C~ +70°C;24h average value does not exceed +35°C;
Relative humidity: +23°C should not be higher than 83%;+40°C should not be higher than 93%;
Products can withstand humid air, salt mist, oil mist, mold;
Installation categoy of measuring swich (characteristic curent) connected to main circuit: Class Ill (distribution and contro level), installation category of measuring switch (characteristic current) not connected to main circuit Class II (oad leve);
Pollution grade: Grade 3;
Protection class: IP20;
The product is installed in a medium without explosion hazard, and the medium has no place where gas and conductive dustare suficient to corrode metal and destroy insulation, and avoid use in places where rain and snow attack: A When the user’s useconditions are more severe than the above, consult with the manufacturer.
Main technical parameters
main performance indexes
| Poles | 3P |
| Connection mode | 3 phase 4 wire |
| Rated operating voltage Ue(V) | AC400V |
| Rated current In (A) | 125/160/200/250 |
| Rated insulation voltage ui (V) | 100 |
| Rated impulse withstand voltage Uimp (kV) | 8 |
| Rated short-ircuit breaking capacity Ics (kA) | 35 |
| Rated limit short-ircuit breaking capacity Icu (kA) | 50 |
| Icw (kA) | 5/1s |
| Use classes | A |
| Mechanical life | 8000 |
| Electrical life | 5000 |
| Appearance size (m) (L X W X H) | 180*107*100 |
| Installation size | 141*35 (4X Φ 4.5 hole ) |
Cross-sectional area selection of connecting wires
| Rated current In (A) | 125 | 160 | 200 | 250 |
| Cable sectional area (mm²) | 50 | 70 | 95 | 120 |
Cross-sectional area selection of connecting wires
| Thread diameter (mm) | Torsional moment (N·m) |
|---|---|
| Binding screws M8 | 12 |
| Mounting screws M4 | 4 |
Product appearance and installation size
| Specification | Outline size | Installation size | Access size | binding screw | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | W | H | H1 | W1 | L1 | W2 | L2 | H2 | H3 | D | W3 | L3 | M | |
| 160/250 | 180 | 107 | 127.5 | 100 | 70 | 160 | 35 | 141 | 27 | 25 | 4*φ4.5 | 23.5 | 12 | 6*M8 |
| 400/630 | 270 | 140 | 160.5 | 121 | 88 | 239 | 44 | 208 | 35 | 35 | 4*φ7 | 33 | 12 | 6*M8 |
| 800 | 290 | 182 | 164.5 | 126 | 116 | 255 | 58 | 220 | 35 | 35 | 4*φ7 | 45 | 16 | 6*M8 |
