3
3.2 Control function
3.2.1 Prepaid control
Instrument support pre-payment function.Can set the basic amount of electricity meter free
trial;Can carry on four levels alarm to the remaining amount: insufficient balance alarm (first
level) , pre-trip alarm (second level) , arrearage alarm (third level) , reach the credit limit (fourth
level) alarm.
3.2.2 Time Management Control
Instrumentation support time management control.The day can be set to working day or holiday
mode, up to a maximum of 8 time periods per day, each time period can be set to turn-on or
turn-off state.
3.2.3 Load Management Control
Instrument Support Load Management Control, specific functions as follows:
Load total power limit: limit the maximum power consumption of the branch, when the
branch power exceeds the set value, the branch trip.
Malignant load identification: limit the branch access to the undefined malignant load, when
the branch access to the unauthorized malignant load (mainly manifested as a large power
increment and a large increment factor) , the branch trip.
4
Technical parameter
4.1 Electrical characteristics
Projects
DDSY1352
DTSY1352
Specification
Measur
ement
voltage
Reference
voltage
220V
3
×
220/380V
Consumption
<10VA(Single phase)
Impedance
>2MΩ
Accuracy class
Error
±
0.2%
current
Input current
10(60)A
3
×
1(6)A
，
3
×
10(80)A
Consumption
<4VA(Single phase rated current)
Accuracy class
Error
±
0.2%
Power
Active, reactive, apparent power, error
±
0.5℅
Frequency
45
～
65Hz
，
Error
±
0.2%
meter
amount
Energy
Active energy(Accuracy
class:1)
Active energy(Accuracy
class:0.5)
Clock
≤
0.5s/d
number
signal
Energy pulse output
1 active optocoupler output
Switching output
1 Switching output
2 Switching output
