CHINT DTSU666 Series User Manual

DTSU666 series and DSSU666 series
three phase electronic energy meter
ZTY0.464.1448
User manual
Page 3, Total 21
and the maximum line voltage does not exceed 540V(three-phase three-wire),Suitable for specific
occasions
1.4 Model composition and meanings
Figure 1 Model composition and meanings
1.5 Applicable environmental condition
1.5.1 Temperature range
Indoor type:
Regulated working temperature range: -10℃～+45℃；
Limited working temperature range: -25℃～+75℃；
1.5.2 Relative humidity(Annually average):≤75％RH；
1.5.3 Atmospheric pressure: 63.0kPa～106.0kPa( altitude 4km and below), excepting the requirements
for special orders.
2. Working Principle
The instrument are composed of high accurately integrated circuit specially for measurement
(ASIC) and managing MCU, memory chip, RS485 communication module, etc.
The working principle block diagram of the instrument is shown in figure 2

CHINT DTSU666 Series Specifications

General

Type	Three-phase electronic energy meter
Rated Current	5A
Starting Current	0.004Ib
Frequency	50/60Hz
Display	LCD
Mounting	DIN rail
Operating Temperature	-25°C to +55°C
Storage Temperature	-40°C to +70°C
Protection Level	IP51
Rated Voltage	3x230/400V
Communication	RS485
Weight	0.5 kg
Standards	IEC 62052-11
Accuracy Class	0.5S
Humidity	<95% non-condensing