MT302 3P Electricity TOU Meter
Introduction
The MT302 meter offers outstanding measurement and complex tariff capabilities for use in both small commercial and residential whole current operated applications. The MT302 meter can operate as a standalone unit or as part of a comprehensive metering system.
Features
- Up to 5(100)A whole current
- Up to 8 comprehensive tariff structure
- Instantaneous instrumentation values
- Communications via optical port or RS485
- Big capacity data storage
- Internal clock and calendar with battery back-up
- Concealed utility/reset push button
- DLMS/COSEM protocol
- High security design
- Anti-tamper
Billing
Data Security
DLMS
Firmware Upgrade
Load Profile
IP54
Specifications
| Item | Sub-item | Value |
|---|---|---|
| Measurement | Active accuracy(kWh) | Class1 (IEC 62053-21) |
| Measurement | Reactive accuracy(kvarh) | Class 2 (IEC 62053-23) |
| Measurement | Measuring and registration | Import with reverse blocking; Import/Export; Absolute sum of both directions |
| Voltage | Rated voltage(Un) | 3x220/380V, 3x230/400V, 3x240/415V |
| Voltage | Working voltage range | 0.8Un ~ 1.2Un |
| Current | Basic current(Ib) | 5(60)A, 5(80)A, 5(100)A |
| Current | Starting current | 0.004 Ib |
| Frequency | Rated frequency(fn) | 50Hz or 60Hz |
| Power Consumption | Voltage circuit | 2W/10 VA |
| Power Consumption | Current circuit | 0.5 VA |
| Environmental Influences | Operating temperature range | -40°C ~+70°C |
| Environmental Influences | Storage temperature | -40°C ~+80°C |
| Environmental Influences | Impermeability to IEC 60529 | IP54 indoor |
| Electromagnetic Compatibility | IEC 61000-4-2 Electrostatic discharges | Contact discharge: 8 kV; Air discharge: 15 kV |
| Electromagnetic Compatibility | IEC 61000-4-3 Electromagnetic RF-fields | 10Vm and 30Vm |
| Electromagnetic Compatibility | IEC/CISPR 22 Radio interference suppression | class B |
| Electromagnetic Compatibility | IEC 61000-4-4 Fast transient burst test | 4kV |
| Electromagnetic Compatibility | IEC 61000-4-5 Surge immunity test | 6kV |
| Insulation Strength | Insulation strength | 4 kV 50Hz during 1 min. |
| Insulation Strength | IEC 62052-11 Impulse voltage 1.2/50 μs | 8kV |
| Inputs and Outputs | Optical test output | LED (red): kWh impulses |
| Inputs and Outputs | Meter constant | 1000 imp/kWh; 1000 imp/kvarh |
| Display | Type | LCD liquid crystal display |
| Display | Backlit | With backlit(option) |
| Display | Digit size | Up to 12mm |
| Display | Number of digits | Up to 8 |
| TOU | Time of use | Up to 8 tariff; 8 time span; 8 typical days； 12 typical weeks； 12 seasons； 200 programmable national holiday and special holidays |
| Time Clock & Calendar | Accuracy | 15 Seconds per Month at 23˚C |
| Time Clock & Calendar | Backup Time | 10 Years without Power (Lithium Battery) |
| Time Clock & Calendar | Daylight Saving Time | Option |
| Time Clock & Calendar | Battery | 1 Internal battery for RTC / 1 replaceable external battery for power outage display |
| Communication Interface | Optical Interface | Optical port IEC 62056-21； Protocol: IEC62056-21 C mode or E mode |
| Communication Interface | Serial Interface | RS485(option)； Protocol: IEC62056-21 or DLMS HDLC |
| Load Profile | Channels | Up to 8 channels |
| Load Profile | Integration period | 1 to 60 Minutes |
| Load Profile | Storage | 90 Days (8 Channels, 30-Minute Intervals) |
| Load Profile | Capture object | Demand(kW, kvar)； Energy(kWh, kvarh)； Instantaneous value(V, A, W, PF, Phase angle) |
| Billing & Max Demand | Storage | 12 sets of energy billing data； 12 sets of Max Demand data |
| Billing & Max Demand | MD mode | Block mode or Slide mode |
| Billing & Max Demand | MD value | Time and value of maximum demand, Value of cumulative Max Demand |
| Antifraud protection | Tamper detiction and alarms | Sag/Swell； Meter cover open detection； Terminal cover open detection； Magnetic field influence detection； Battery/clock/memory failure detection； Pre-programmed alarms for meter self-check |
| Antifraud protection | Anti-Tamper | Anti 0.5T Magnetic influence |
| Air-upgrade | Air-upgrade | Local/remote firmware upgrade |
| Terminal cover | Standard | 60 mm free space |
| Weight and dimensions | Dimensions | 234.7mm(H) x 169.4mm(W) x 61.7mm(D) |
| Weight and dimensions | Weight | approx. 1.5 kg |