The DTSD178-1 is a three-phase electricity meter for residential usage, which is available for 3-wire and 4-wire applications and complies with IEC62055-41, IEC 62052-11, 62053-21, 62053-22, 62053-23, 62056-53, 62056-61 and 62056-62 international standards. The DTSD178 is designed for the measurement of active and reactive energy, time-of-use metering, data recording, alarm detection, as well as the control switch function for connecting or disconnecting user’s power.
Ø Standard Features
l STS standard, an open safety transmission standard.
l Payment information is transmitted by TOKEN code, extensible various payment means;
l Class 1
l Include internal Real Time Clock (RTC).
l Include nonvolatile memory for register data and load profile.
l Switching power supply.
l Meter cover and terminal cover removal detection.
l Include Time-of-Use (TOU), demand, load profile features.
l Include self testing, event log features.
l Include removable backup battery.
Ø Communication Features
l Optical port, complies with IEC 62056-21 for two-way communication.
l Include RJ-45 connector for 2-wire RS-485 communication.
l Optional accessories: PLC/RF module.
l Disconnect switch. (Direct connected meter has disconnect switch, CT connected meter hasn’t.)
l LCD backlight.
|
Reference Voltage |
3×220/380V |
|
Current Rating |
3×5(100)A |
|
Maximum Current |
100A |
|
Reference Frequency |
50Hz |
|
Variation in frequency |
±5% |
|
Accuracy Class |
1 for active,2 for reactive |
|
Starting Current |
0.4%Ibfor active |
|
Measuring Elements |
four |
|
Operating Voltage |
0.8Vref～1.1Vref |
|
Meter constant |
300imp/kWh 300imp/kVarh |
|
Alarm function |
Alarm indicator light |
|
Power Consumption |
<1.5W(8VA) |
|
Test for Immunity to Electrostatic Discharge (ESD) |
8kV(Contact ESD ) , 15kV(Air ESD ) |
|
Fast Transient Burst Test |
4kV |
|
A.C. High Voltage Test |
4kV |
|
Impulse Voltage Test |
6kV |
|
Lightning Protection |
≤4kV(between phase and neutral) |
|
Protocol |
DLMS |
|
Communication |
Optical, RS 485,PLC/RF |
|
Environmental Temperature |
Operation range:-10℃～60℃ Limit range for storage and transport:-10℃～70℃ |
|
Relative Humidity |
≤85% |
|
Waterproof |
IP54 |
|
Service Life |
10 years |