KSTAR SDM630MCT V2, three-phase smart meter for DIN rail (1 A / 5 A transformers)
The KSTAR SDM630MCT V2 is a three-phase smart meter for DIN rail connected through 1 A or 5 A current transformers. Metering is bidirectional, with active energy per IEC 62053-22 class 0.5S. Communication is over RS-485 (Modbus RTU), and it is used at solar plants for zero export and export control.
- Measured quantities
- kWh, kvarh, kW, kvar, kVA, P, F, PF, Hz, dmd, V, A, THD
- Input
- current transformer, secondary winding 1 A / 5 A, primary 1–9999 A
- Rated voltage
- 380 / 400 V AC (operating 173–480 V, L-L)
- Accuracy class
- active energy IEC 62053-22 class 0.5S, IEC 62053-21 class 1; reactive IEC 62053-23 class 2
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
USK ENERGY supplies KSTAR equipment as an official partner of the manufacturer. All KSTAR products
Description
The SDM630MCT V2 from KSTAR is connected through current transformers with a 1 A or 5 A secondary winding and a primary current of 1–9999 A. The transformers are not included in the delivery set and are selected and supplied by the user. According to the datasheet, the primary rating of the transformer must exceed the maximum current on the AC bus, and this current is estimated as the system power divided by 230 and by 3, with a margin of 1.2. The meter belongs to the SDM630MCT line, which covers a platform for three-phase systems with bidirectional metering and accuracy class 0.5S. There is also a version with 40 mA transformers, but this page describes the V2 variant for 1 A and 5 A transformers.
The KSTAR device measures true RMS values, including harmonics, in a three-phase network (3P and 3P+N). It shows active and reactive energy, active, reactive and apparent power, frequency, power factor, peak power values, voltage, current and THD distortion. Metering is bidirectional, import (IMP) and export (EXP) of energy are counted separately, and this is exactly what systems with zero export and feed-in to the grid need.
The accuracy is as follows. Active energy is measured per IEC 62053-22 class 0.5S and IEC 62053-21 class 1.0, and reactive energy per IEC 62053-23 class 2. Voltage and current are measured with an error of 0.5 % of the range maximum, and power with an error of 1 %. This is sufficient for energy settlements and for monitoring plant operation.
Communication is over RS-485 using the Modbus RTU protocol, with addresses 1–247, a line length of up to 1000 m, and baud rates from 1200 to 38400 bit/s. The response time is less than 100 ms. There are two pulse outputs. The rated voltage is 380/400 V, and the operating range is 173–480 V between phases. The enclosure is mounted on a 35 mm DIN rail and takes little space in the cabinet.
The manufacturer recommends using the SDM630MCT V2 together with KSTAR commercial and industrial string inverters. Application: commercial and industrial solar installations, zero export and grid export functions, integration with SCADA and energy management systems, and monitoring of the grid connection point.
Technical specifications
| Measured quantities | kWh, kvarh, kW, kvar, kVA, P, F, PF, Hz, dmd, V, A, THD |
|---|---|
| Input | current transformer, secondary winding 1 A / 5 A, primary 1–9999 A |
| Rated voltage | 380 / 400 V AC (operating 173–480 V, L-L) |
| Accuracy class | active energy IEC 62053-22 class 0.5S, IEC 62053-21 class 1; reactive IEC 62053-23 class 2 |
| Interface | RS-485, Modbus RTU, address 1–247, up to 1000 m, 1200–38400 bit/s |
| Pulse outputs | two |
| Response time | less than 100 ms |
| Mounting | 35 mm DIN rail |
Request a price and lead time
KSTAR SDM630MCT V2, three-phase smart meter for DIN rail (1 A / 5 A transformers). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
Which current transformers does the KSTAR SDM630MCT V2 work with?
The transformer secondary winding is 1 A or 5 A, and the primary current is 1–9999 A. The transformers are not included in the delivery set and are selected by the user.
What is the accuracy class of the meter?
Active energy is measured per IEC 62053-22 class 0.5S and IEC 62053-21 class 1.0, and reactive energy per IEC 62053-23 class 2. Voltage and current are measured with an error of 0.5 % of the range maximum, and power with an error of 1 %.
Which communication parameters does the device support?
RS-485 with the Modbus RTU protocol, addresses 1–247, line length up to 1000 m. Baud rates range from 1200 to 38400 bit/s, and the response time is less than 100 ms.
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