CHINT DTSU666 Series User Manual

DTSU666 series and DSSU666 series
three phase electronic energy meter
ZTY0.464.1448
User manual
Page 7, Total 21
added voltage for voltage circuit shall be 115% of the referenced voltage.
Shortest testing time
Δt
：
For instrument of class 0.5S and class1：
6
max
600 10
Δt [ mi n]
n
k m U I


  
For instrument of class 2：
6
max
480 10
Δt [ mi n]
n
k m U I


  
From the formula, k represents meter constant (imp/kWh), m represents measuring components,
Un represents referenced voltage (V) and Imax represents the maximized current (A).
3.4.Electrical parameters
Table 7 Electrical parameters
Specified operating voltage range
0.9Un～1.1Un
Extended operating voltage range
0.8Un～1.15Un
Ultimate operating voltage range
0 Un～1.15Un
Power consumption of the voltage
circuit
≤1.5W and 6VA
Power consumption of the current
circuit
I
b
＜10A
≤0.2VA
I
b
≥10A
≤0.4VA
Data save time after power off
≥10 years
4.Key components adoption
Table 8 Key components adoption
Model
DTSU666
Metering chip
HT7036
Crystal
oscillator
5.5296MHz，32.768kHz
Printed PCB
ZTY8.067.2267，ZTY8.067.2837，ZTY8.067.2288
Power
transformer
EE19-0.9mH-B
Current
HLX1

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