LYD301 Three Phase Direct Connected Energy Meter
Introduction
LYD301 Three Phase Direct Connected Energy Meter uses a 20-digit STS token as its recharge medium. Data is securely transmitted via a 20-digit numeric code in compliance with the international STS (Standard Transfer Specification) or CTS (Currency Transfer Specification) encryption protocols. The meter can automatically disconnect the customer’s power supply in cases of fraudulent activity—such as tampering with the terminal cover—or when the contracted power limit is exceeded.
It is equipped with advanced security features, including detection of main and terminal cover removal as well as magnetic field interference, safeguarding both the meter and its internal modules against fraud or tampering.
- Modem mounted on PCB or Plug and Play
- Imax 120A
- Multi data records, curve
- Anti-tamper
- Local: RS485, IR, Box Open, MC171, RJ45, USB
- Downlink to CIU: RF, PLC, Wire
- Uplink to HES:GPRS,4G
- Uplink to DCU:RF, PLC, RS485
- Protocol: DLMS/COSEM, IEC62056-21
| Items | Parameters |
|---|---|
| Network | 3 Phase 4 Wires network |
| Nominative standard | IEC 62052-11, IEC 62053-21 |
| Nominative standard | IEC 62053-23, IEC 62055-31 IEC 62055-41, IEC 62055-51 |
| Nominative standard | IEC 62055-52, IEC 62056-21 |
| Accuracy class | Class 1.0 as per IEC 62053-21 |
| Accuracy class | Class 2.0 as per IEC 62053-23 |
| Reference voltage | Un=3x22-240/380-415V, L-N |
| Operating voltage | Range 70%-120%Un |
| Maximum current | Imax=60A |
| Starting current | Ist=0.4%Ib |
| Power consumption | Voltage circuit <1W, <2.5VA |
| Power consumption | Current circuit < 0.25VA @ Imax |
| Temperature | Operation: -40º to + 55º C |
| Temperature | Storage: -40º to + 85º C |
| Enclosure | IP54 IEC 60529:1989 |
| Communication | Local: Optical |
| Communication | CIU: PLC |
| Communication | Remote: PLC |
