NewTrend · compact three-phase energy metering
Product overview
The DTS238-4-M is a four-module LCD meter for three-phase four-wire energy monitoring. The illustrated direct-connected version is marked 3 × 220/380V and 3 × 230/400V, 10(100)A and 50/60Hz. It combines bidirectional active-energy measurement, a front touch key, phase indicators and pulse output in a DIN-rail enclosure.
Technical selection summary
| Model | DTS238-4-M |
|---|---|
| System | Three-phase four-wire AC |
| Nameplate voltage ratings | 3 × 220/380V and 3 × 230/400V |
| Rated / maximum current | 10(100)A per phase; direct connection |
| Frequency | 50/60Hz |
| Accuracy | Class 1 |
| Starting current | 0.004 Ib |
| Display | LCD with front touch key for step-by-step readings |
| Energy measurement | Bidirectional total active energy; reverse energy accumulated in total |
| M-series measurements | Voltage, current, active/reactive power, power factor and frequency |
| Energy registers | Total, import, export and resettable interval energy |
| Front indicators | L1, L2, L3 and REV |
| Pulse constant | 1000imp/kWh on the illustrated unit |
| Pulse output | Passive, optically isolated |
| Power consumption | <1W / 10VA per phase |
| Protection | IP20 |
| Mounting | 35mm DIN rail; four-module format |
| Operating temperature | −25°C to +55°C |
| Standard marking | IEC62053-21 |
LCD readings and touch operation
The M-series display provides voltage, current, active power, reactive power, power factor, frequency, imported and exported active energy, and resettable interval energy. Use the front touch key to move through the readings step by step. Reverse active energy is included in the total accumulation.
Phase status and energy pulses
L1, L2 and L3 indicators show the status of the three phases. The REV indicator identifies reverse energy or reverse connection. The energy-pulse indication is marked 1000imp/kWh on this 100A unit, and the passive pulse output uses optical isolation for external energy counting.
Three-phase four-wire connection
Connect each phase and neutral to the corresponding marked terminals. The illustrated 100A version measures current by direct connection. Follow the L1, L2, L3 and N labels on the meter and keep each input and output pair correctly aligned.
DIN-rail installation
The enclosure mounts on a standard 35mm DIN rail in a distribution board. The covered terminals and front LCD keep the connections and readings accessible. Isolate the supply before installation or servicing, use suitable conductors and tighten the terminal screws securely.
Typical applications
For three-phase residential and commercial submetering, industrial distribution boards, consumption allocation and bidirectional energy monitoring. The compact four-module format suits installations where local readings and electrical-parameter checks are required.
