1
Guide Rail Type Electric Energy Meter
Operation Manual
This manual is applied to the following models：
DDS1946/DDS1946-T/DDSF1946/DSS1946/DSSF1946
DSSD1946/DTS1946/DTS1946-T/DTSF1946/DTSD1946
1. Product introduction
Guide rail type electric energy meters are designed and produced according to user’s real
electricity consumption situation by adopting advanced energy measurement IC and using digital
sampling processing and SMT technologies. They are used to measure the real-time parameters of
voltage, current, power, power factor, frequency and demand. They also have the functions such as
energy measurement, SOE, pulse and communication. This series of energy meters adopt modularity
structure with the features such as small volume, convenient installation and reliable working.
2. Panel description
Single phase guide rail type electric energy meter panel
4
3200imp/kWh 220V 5(30)A 50Hz/60Hz 1
1
2
3
Three phase guide rail type electric energy meter panel
1：Display interface 2：Energy pulse indication light 3：Buttons 4:Model
2
3. Installation and Wiring
3.1 Wiring mode
Single Phase
1 2 3 4
L
N
single phase direct connection
1 2 3 4
L
N
single phase connection via CT
*
Three phase three wire
1
L1
L2
L3
three phase three wire
direct connection
2
3
4
56
7
L1
L2
L3
*
*
1234 5
611
12 13 14
three phase three wire
connection via CT
Three phase four wire
1
L1
L2
L3
N
three phase four wire
direct connection
2
3456
7
L1
L2
L3
N
*
*
*
1
23 4561112
13
14
three phase four wire
connection via CT
Signal terminal wiring diagram
58
A
B
59
RS485
RS232
PC
c
ommunicatio
n
energy puls e
-
+
AP
47 48
3
3.2 Outline dimension
Single phase meter outline dimension (mm)
front view side view
Three phase meter outline dimension (mm)
front view side view
4
3.3 Installation method
DIN rail
installation support
35m
m
4. Display
Guide rail type electric energy meter shows the measured data of voltage, current, power,
power factor, frequency and electric energy. Press and buttons at the same time to switch
between electric energy interface and electric quantity interface.
Electric energy display interfaces
Display interface Description Display interface Description
Import active electric
energy：
EP =780.62 kWh
Total tariff energy (tip)：
208.09 kWh
Export active electric
energy：
EP- = 0.00 kWh
Total tariff energy (peak)：
101.06 kWh
Import reactive electric
energy：
EQ = 18.80 kvarh
Total tariff energy (level)：
382.23 kWh
Export reactive electric
energy：
EQ- = 7.10 kvarh
Total tariff energy
(valley)：
89.24 kWh
5
Electric quantity display interface of single phase meter：
Display interface Descripti on Display interface Description
Voltage：
U = 220.0 V
Apparent power：
S = 7.700 kVA
Current：
I = 35.00 A
Power factor：
PF = 1.000
Active power：
P = 7.700 kW
Frequency：
F = 50.00Hz
Reactive power：
Q = -0.006 kW
Electric quantity interface of three phase meter (e.g. three phase four wiring mode)
Display interface Descripti on Display interface Description
Phase voltage Ua
Ua = 220.1 V
Phase B reactive power
Qb = 0.210 kvar
Phase voltageUb
Ub = 220.2 V
Phase C reactive power
Qc = 0.098 kvar
Phase voltageUc
Uc = 220.0 V
Total reactive power
Q = 0.416 kvar
Line voltage Uab
Uab = 381.3V
Phase A apparent power
Sa = 2.218 kVA
Line voltage Ubc
Ubc = 381.2 V
Phase B apparent power
Sb = 2.207 kVA
Line voltage Uca
Uca = 381.2 V
Phase C apparent power
Sc = 2.211 kVA
Phase A current
Ia = 10.10A
Total apparent power
S = 6.636 kVA
Phase B current
Ib = 10.20A
Phase A power factor
PFa = 0.998
Phase C current
Ic = 11.00A
Phase B power factor
PFb = 0.980
6
Phase A active power
Pa = 2.128 kW
Phase C power factor
PFc = 0.960
Phase B active power
Pb = 2.040 kW
Total power factor
PF = .979
Phase C active power
Pc = 2.100 kW
Grid frequency
F = 50.00 Hz
Total active power
P = 6.267 kW
Time: year-month-day
2012, August 6th
Phase A reactive power
Qa = 0.108 kvar
Time: hour-minute-second
12: 36: 15
5. Setting
Enter programming mode
Keep pressing
and buttons for more than 3 seconds in electric energy display interface
until
appears. Then press or button to input password (defaulted as 0000). After
inputting correct password, press
button to enter setting interface.
Exit programming mode
After changing the data of items of third level menu, press
button to confirm the
modification. If user wants to cancel the modification, please press
and buttons at the same
time. After confirm or cancel the modification, press
and buttons to return to first level menu.
Now press
and buttons again, appears. There are two choices at this situation:
1）Press
button not to save setting parameters;
2）Press
and buttons to select , then press button to save setting parameters.
In parameter setting operation, button is used to switch between menus and select numbers
at different bits,
button is used to switch between menus and change the number at same bit,
and
buttons are used as combined buttons for returning to upper level menu or canceling
modification,
button is used to enter next level menu or confirm modification.
Setting menu
7
set passwo rd
set circularly display
clear energy
set first display interface
after power on
clear demand
set energy pulse
(three phase meter)
>3S
meter address
baud rate
check mode
/
/
/
/
/
/
//
/
/
/
/
/
//
//
communication prot ocol
//
//
press and
at the same time
System parameter setting menu
>3S
set password
set circularly display
clear energy
/
/
/
/
/
/
/
//
set first display interface
after power on
press and
at the same time
save modified data
and exit
/
//
clear demand
p
ress and
at the same time
//
set energy pulse
(three phase meter)
press and
at the same time
8
Communication setting
Set communication address as 2, select baud rate 4800bps, set check mode E.8.1, and choose
DLT645 communication protocol.
press and
at the same time
save modified dat a
and exit
press and
at the same time
set meter address
set baud rate
set check mode
set communicat ion protoco
l
>3S
/ /
/
/
/
/
/
/
/
//
p
ress and
at the same time
6. Techn ical parameters
Electrical feature
Model
Function
DDS1946
DDS1946-T
DDSF1946
DSS1946
DSSF1946
DSSD1946
DTS1946
DTS1946-T
DTSF1946
DTSD1946
Accuracy
voltage, current：Class 1
power active energy：Class 1
Rated voltage 220V 3×380V 3×220/380V
Direct input
5(30)A，10(60)A
5(100)A
Input current
Input via CT 1.5(6)A
Frequency 50/60 Hz
Wiring mode
Single phase three phase three
wire
three phase four
wire
Voltage range
0.8Un ～ 1.2Un
voltage circuit
consumption
< 5VA
Consumption
current circuit < 2VA
9
consumption
direct input 0.004Ib
Start current
input via CT 0.002In
Energy pulse
one active energy optoelectronic isolation output, pulse width
（80±20%）ms
Time error ≤0.5s
Communication feature
RS485 communication interface
Modbus-RTU protocol(optional)，baud rate up to 9600bps
DL/T 645 communication protocol (optional)，baud rate up to
9600bps
Mechanical feature
Dimension 72×90×63.5 126×90×63.5
IP protection
IP54（panel）/IP20（case）
Environment feature
Work temperature
(-10～55)℃
Storage temperature
(-25～70)℃
Relative humidity
(5～95)%（no condensation）
EMC
Electrostatic discharge immunity IEC 61000-4-2-III class
Radiated, radio-frequency,
electromagnetic field immunity
IEC 61000-4-3-III class
Electrical fast transient/bur st
immunity test
IEC 61000-4-4-Ⅳ class
Surge immunity
IEC 61000-4-5-Ⅳ class
Immunity to conducted
disturbances, induced by
radio-frequency fields
IEC 61000-4-6-III class
Power frequency magnetic field
immunity
IEC 61000-4-8-III class
Voltage dips, short interruptions
and voltage variations immunity
IEC 61000-4-11-III class
10
The information in this document is subject to changes without any further notice.
JIANGSU SFERE ELECTRIC CO., LTD.
Add.: 99 Chengjiang R.(E), Jiangyin, Jiangsu, China.
P.C.: 214429
Tel.: 0086-510-86199063
Fax: 0086-510-86199069
http://www.meter-sfere.com
Email: justinsfere@gmail.com
cdwjc@hotmail.com
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