1 Overview

2 Abbreviation
 Technical features Description of CT meter Description of CT and PT meter

Relay
 Percentage error
Specified range or
Limits for meters
value and Power
Test clause in
recommended value of Factor
Influence quantity IEC 62052-11:
test current (balanced Class 0.5S Class 1 for Class 1 for
2020
unless otherwise (3) for active active reactive
stated)

Radiated,
radiofrequency,
electromagnetic field 9.3.5 In 1 2.0 2.0 2.0
immunity test test
with current

Electrical fast
transient/burst 9.3.6 In 1 2.0 4.0 4.0
immunity test

Immunity to conducted
disturbances, induced
9.3.7 In 1 2.0 2.0 2.0
by radio-frequency
fields

Damped oscillatory
wave immunity 9.3.11 In 1 2.0 2.0 n/a
test (4)*

External static
magnetic fields
9.3.12 In 1 2.0 2.0 2.0
(0.7T 65*35*35mm)
(6)*

Power frequency
magnetic field
9.3.13 In 1 1.0 2.0 2.0
immunity
test

Harmonics in the
current and voltage
9.4.2.2 0,5 Imax 1 0.5 0.8 0.8
circuits 5th harmonic
test

Inter harmonics in the

current circuit burst 9.4.2.3 0,5 In 1 1.5 3.0 3.0
fired waveform test

Odd harmonics in the

9.4.2.4 0,5 In 1 1.5 3.0 3.0
current circuit
 Percentage error
Specified range or
Limits for meters
value and Power
Test clause in
recommended value of Factor
Influence quantity IEC 62052-11:
test current (balanced Class 0.5S Class 1 for Class 1 for
2020
unless otherwise (3) for active active reactive
stated)

Imin ≤ I ≤ Imax
1 0.25 0.5 0.5
(In)
Voltage variation 9.4.3
In
0.5 0.5 1.0 1.0
0,05 In ≤ I ≤ Imax

Imin ≤ I ≤ Imax
1 0.03 0.05 0.05
Ambient temperature (In)
9.4.4
Variation (2)* 0,1 In ≤ I ≤ Imax
0.5 0.05 0.07 0.07
(In)

Interruption of phase
9.4.5 In 1 1.0 2.0 2.0
voltage

Imin ≤ I ≤ Imax
1 0.2 0.5 1.0
(In)
Frequency
9.4.6
variation
0,05 In ≤ I ≤ Imax
0.5 0.2 0.7 1.0
(In)

Reversed phase
9.4.7 0,1 In 1 0.1 0.5 0.5
sequence

Operation of auxiliary
9.4.9 Imin 1 0.1 0.2 0.2
devices

Short-time
9.4.10 In 1 0.2 0.5 0.5
over currents (5)*

1 0.2 0.7 0.7

Self-heating (1)* 9.4.11 Imax
0.5 0.2 1.0 1.0

Fast load current

9.4.12 In 1 1.0 2.0 2.0
variations

Earth fault (5)* 9.4.13 In 1 0.25 0.5 n/a

Dry heat test (5)* 8.3.3 In 1 0.25 0.5 0.5

Cold test (5)* 8.3.4 In 1 0.25 0.5 0.5

 Percentage error
Specified range or
Limits for meters
value and Power
Test clause in
recommended value of Factor
Influence quantity IEC 62052-11:
test current (balanced Class 0.5S Class 1 for Class 1 for
2020
unless otherwise (3) for active active reactive
stated)

Damp heat cyclic test

8.3.5 In 1 0.25 0.5 0.5
(5)*

Table 3 Acceptable limits of variation in percentage error due to influence quantities

(1) The test shall be carried out for at least 1 h, or until the variation of error during 20 min does not exceed 0,2 %.
(2) These values shall be considered as mean temperature coefficients %/K for meters of class.
(3) Inductive.
(4) Voltage transformer operated meters only.
(5) For these tests, the meter accuracy is measured before and after the test. The difference in percentage error
before and after the test shall not exceed the error limits specified in this table. These errors limits may be
interpreted as allowable meter accuracy drift induced by the specified test conditions.
(6) According to the IEC standard, the mounting surface is exempted.
4.2.3 Terminals and Terminal Block
The terminals are made of brass with tin plated ( 5 micron) and provide two stainless steel M4 current screws and
M3 voltage screws in each terminal which are better protected against corrosion. The stainless-steel screws can
pass 72 hours salt spray test according to IEC 60068. The screw is at least 3 threads in the terminals. The screw
head type is Philips & slotted head

The current terminal diameter size is 5.5 0.2 mm, voltage terminal diameter size is 4.5 0.2 mm. The type of
wires can be solid cores, composite cores or stranded wires. The terminal block is suitable for cable sleeves, see the
figure as below(unit:mm):

Figure - 3 Dimensions of terminal of three phase meter

 No. Dimension(mm)
L 240±2
W 170±2
H 87±2

Figure - 6 Dimensions of three phase meter

 Figure 7b Marking of CTPT meter

1. Type designation 8. Property of utility

2. Number of phases and wires 9. Purchase Order No. & date
3. Current range, rated voltage 10. Month and Year of manufacture
4. Rated frequency 11. Guarantee period
5. Meter constant 12. Serial number
6. Class index 13. Connection diagram
7. Manufacturer's name
4.4.1 Meter Serial Number
1. Each meter has a permanent, clear and unique serial number, the serial number is permanently print on the
meter cover in two types, numbers and barcode. The barcode type is auto128 code.
2. The meter's unique serial number is also recorded in the non-volatile memory of meter as a permanent value,
which can be read out via optical port, or remote command.
3. The barcode and the internal memory's serial number consist of 14 digits: the first 4 digits present the meter
code with leading zeroes if necessary, and the next 10 digits present the unique serial number where the first
two digits present the manufacture year. These 8 digits form also the serial number imprint for visual reception.
The figures of the imprinted serial number shall be not less than 3.5 mm height.

1-
3-
4-
5-

1 - G3-PLC communication
2 - 4/2G communication

00000001 to 99999999
Figure - 10 Sealing of three phase meter
Figure - 11 Diagram of LCD screen
 Table - 11 Description of each symbol on LCD screen

5.6.3 Display Mode

The meter supports auto scroll mode, manual scroll mode and alarm mode, power down display mode. For all the
modes, the display parameters are configurable.

5.6.3.1 Auto Scroll Mode

This mode is the default mode at meter power up, it automatically scrolls through all defined display elements
every 5 seconds, and the interval can be configured from 1s to 60s.
If only a single element is defined for the data scroll sequence, it is permanently displayed on the display.
Please refer to Annex 3 for the default display objects for auto scroll mode, the display objects are also
configurable.

5.6.3.2 Manual Scroll Mode

User can enter Manual Scroll mode by short pressing the button. When entering the Manual Scroll mode, by short
pressing the button, the meter can display all items one by one.
 Bit2 Data not valid: Indicates that the current entry may not be used for billing e.g. due to
time shift or if no values have been recorded during the capture period
Bit3 Daylight saving: Indicates whether the daylight-saving time is currently active. The
bit is set if the daylight-saving time is active (summer) and cleared in winter
Bit4 Reserved
Bit5 Clock is adjusted more than the synchronization limit
Bit6 Reserved
Bit7 Power down: Power failure occurred
Table - 13 Description of each bit in load profile status word

5.7.3 Load Profile List

The meter supports following load profiles:

Table - 14 Capture objects of load profile

Figure - 12 State diagram of relay disconnect
 Figure - 13b Load control process

5.8.2 Over current

t1, t2 and the number of auto-reconnect, which are different from

Power Limitation and Demand Side Management (5.9.3).

5.8.3 Demand Side Management

The meter supports different power thresholds for up to 24 time periods. Each time period can be specified start hour time.
The last time period will be ended at 24:00. The demand side management power thresholds are configurable. The
following table is an example showing different demand side management thresholds for different time periods:
Start Time (hour) 0 4 6 12 14 18 23
Power threshold (kw) 4 3.5 3 3.5 3 3.5 4
Table - 17 Example of demand side management thresholds
If the power threshold is zero, then there is no demand side management threshold for this period.
The limitation and disconnection mechanism is same as 5.8.1 Power Limitation.
But the demand side management shares the same sole set of t1,t2 and the number of auto-reconnect which described
in Table-14 with power limitation(contract power).

5.8.4 Export Energy Function

•
•
•
•

5.8.5 Load and THD Monitoring Function

 status word.
The critical error icon will be displayed if critical error is detected.

5.10.2 Instantaneous Status Word

Bit
Description Set Condition Reset Condition
No.
Meter clock is re-
Clock invalid Meter clock is invalid
configured
Measurement A physical error in the The measurement system is
1
system error measurement system recovered
NVM(non-volatile Physical error in the
2 The NVM is recovered
memory) error EEPROM or Flash
Physical error in the
3 RAM error The RAM is recovered
RAM
Program memory The checksum of meter The checksum of meter
4
error code area is wrong code area is correct
CT and PT wire does
CT/PT mismatch
match match
Battery low Battery capacity is low Battery capacity is restored

Missing neutral Neutral line is lost Neutral line is restored

Phase wires are

Wrong phase Phase wires are connected
connected to the meter
sequence correctly
in wrong order
Phase neutral Phase & neutral line are Phase wires are connected
interchange interchanged correctly
Phase A voltage is
Under voltage Phase A voltage returns
lower than under
phase A to normal
voltage threshold
Phase B voltage is
Under voltage Phase B voltage returns
lower than under
phase B to normal
voltage threshold
Phase C voltage is
Under voltage Phase C voltage returns
lower than under
phase C to normal
voltage threshold
Phase A voltage is
Over voltage Phase A voltage returns
higher than overvoltage
phase A to normal
threshold
Phase B voltage is
Over voltage Phase B voltage returns
higher than overvoltage
phase B to normal
threshold
Phase C voltage is
Over voltage Phase C voltage returns
higher than overvoltage
phase C to normal
threshold
Voltage missing Phase A voltage is Phase A voltage is higher
 Bit
Description Set Condition Reset Condition
No.
phase A lower than voltage than voltage missing
missing threshold threshold
Phase B voltage is Phase B voltage is higher
Voltage missing
lower than voltage than voltage missing
phase B
missing threshold threshold
Phase C voltage is Phase C voltage is higher
Voltage missing
lower than voltage than voltage missing
phase C
missing threshold threshold
Terminal cover Terminal cover is
Terminal cover is closed
removal removed
Main cover
Main cover is removed Main cover is closed
removal
Strong magnetic Strong magnetic field is Strong magnetic field
field detected disappears
ESD disturbance is ESD disturbance no longer
ESD disturbance
detected existed
Meter is under current Current bypass condition is
Current bypass
bypass condition no longer existed
DC injection
Neutral disturbance is Neutral disturbance no
(neutral
detected longer existed
disturbance)
Any phase of current is All phases of current are
Current reverse
reverse normal
bit0=0, bit1=0:
Disconnected
bit0=1, bit1=0:
Connected
bit0=0, bit1=1:
Ready for reconnection
Any phase has voltage All phases of current
CT open
but no current restored
Current without Any phase has current, All phases of voltage
voltage but no voltage restored
Reserved
Table - 18 Description of Instantaneous Status Word

5.10.3 Tamper Status Word

A 32-bit tamper status word is used to indicate which tampers have occurred in the meter. It can only be cleared
by a clear tamper command.
Bit No. Description Set Condition Reset Condition
Main cover is closed and clear tamper
Main cover removal Main cover is removed
command is received
Terminal cover Terminal cover is closed and clear
1 Terminal cover is removed
removal tamper command is received
 Event Generation Capture
Group Capacity Description Push
Condition Object
No
No
No
No

Yes
No
No
Yes Event
Yes code,
Yes Timestam
Yes p
Yes
Yes
8kV ESD Yes
disturbance is
detected
ESD disturbance Yes
tampering no longer
exists
Yes
Yes
Yes
Yes
Yes
Yes
Fraud
50 No
event
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Wrong connection on Yes
phase wires detects
Yes
Neutral wire is not Yes
connected on the
meter
Yes
 Event Generation Capture
Group Capacity Description Push
Condition Object
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
50 No Event
No code,
No Time
stamp,
a. client ID,
communic
ation port
ID(1:optic
al;2:remot
e,3:RS485,
4:ethernet)

b.

Communi
cation
event

a.

b.

No
 Event Generation Capture
Group Capacity Description Push
Condition Object
The invocation No
counter in the data
frame receive by the
meter is equal to or
smaller than which
stores in the meter.
No

Yes
Yes

Yes
Yes

No

No
Demand side limiter threshold exceeded No
Demand side limiter threshold ok No
No

No Event
Disconnec Yes code,
t control 50 The current on L1 is Yes Timestam
event bigger than current p
threshold in the meter
The current on L1 is Yes
lower than current
threshold in the meter
The current on L2 is Yes
bigger than current
threshold in the meter
The current on L2 is Yes
lower than current
threshold in the meter
The current on L3 is Yes
bigger than current
threshold in the meter
The current on L3 is Yes
lower than current
threshold in the meter
No Event
Power
No code,
failure 50
No Time
 Event Generation Capture
Group Capacity Description Push
Condition Object
No Duration
of last
long
power
failure in
any phase
50 No
No
No
No
No
Event
Power No
code,
quality No
Timestam
event log No
p
No
No
No
No
No
100 No Event
No code,
No Timestam
No p
No
No
No
Communi
No
cation
No
module
No
event log
No
No
No
No
No
No
No

6 Communication Interfaces
The meter provides 4 communication interfaces:
Interface Purpose Baud Rate Protocol
Optical port Local communication 9600 bps DLMS/COSEM HDLC profile
RS485 port Local communication 4800 bps DLMS/COSEM HDLC profile
Local communication 2Mbps DLMS/COSEM HDLC profile
 Indications of Indicate 4G/2G signal strength in a minimum of 4 separate levels. Refer to
4G/2G signal LCD display.
strength RSRP, RSRQ value is readable.
Antenna Internal antenna
Wake-up Support fully qualified domain names.
Receive and store the IP addresses of the primary and secondary address
when establishing a PDP context based on the DHCP protocol
Support data pushing.
Access and Authentication Changeable APN/password
connection and security Support RADIUS authentication using PAP or CHAP.
Network access information is not saved on the SIM cards
Communication settings to be remotely configurable
Assign IP 4G/2G module support both dynamic IP address assignment and static IP
address address
Table - 22 Description of 4G/2G communication
The 4G/2G communication parameters are generally programmed in the factory. It is also possible to change the
communication parameter remotely or locally.
Refer to LED indicators chapter for the communication status indication.
Annex 1 Reference Standards
The meter complies with the following standards.
1. Metering Standards

2. Electrical Testing Standards

Electromagnetic compatibility (EMC) - Part 4-3: Testing

and measurement techniques - Radiated, radio-frequency, electromagnetic
field immunity test

Electromagnetic compatibility (EMC) - Part 4-4: Testing

and measurement techniques - Electrical fast transient/burst immunity test

Electromagnetic compatibility (EMC) - Part 4-5: Testing

and measurement techniques - Surge immunity test

Electromagnetic compatibility (EMC) - Part 4-8: Testing

and measurement techniques - Power frequency magnetic field immunity
test

Electromagnetic compatibility (EMC) - Part 4-19:

 differential mode disturbances and signaling in the frequency range 2 kHz
to 150 kHz at a.c. power ports

Electromagnetic compatibility (EMC) - Part 4-30:

Testing and measurement techniques Power quality measurement
methods

3. Mechanical Testing Standards

4. Environmental Standards

5. Software Standards
 IEC 62052-21 Electricity metering equipment (a.c.) - General
requirements, tests and test conditions Part 21: Tariff and load control
equipment
Electricity metering (a.c.) - Tariff and load control - Part
21: Requirements for time switches

6. 4G/2G module Standards

Annex 2 Default Tariff Scheme

1. Calendar name
Calendar_name
cale
2. Season tariff
Season_profile_name Season_start Weekly Profile Name
B FF-03-01 FF week_2
C FF-06-01 FF week_3
D FF-09-01 FF week_4
A FF-12-01 FF week_1
3. Week tariff
Weekly_profile_name Monday Tuesday Wednesday Thursday Friday Saturday Sunday
week_1 1 1 1 1 1 1 1
week_2 2 2 2 2 2 2 2
week_3 3 3 3 3 3 3 3
week_4 4 4 4 4 4 4 4
4. Day tariff
Day_id Start-time Tariff
17:00:00 T1
1
21:00:00 T2
18:00:00 T1
2
22:00:00 T2
19:00:00 T1
3
23:00:00 T2
18:00:00 T1
4
22:00:00 T2

Annex 3 Display Item List

1 / Display all segment All segments /

2 96.1.0 Device ID1, manufacturing number XXXXXXXX /
3 0.9.1 Local date DD-MM-YY /
4 0.9.2 Local time HH:MM:SS /
5 15.8.0 Active energy total (|+A|+|-A|) XXXXXXXX kWh
6 15.8.1 XXXXXXXX kWh
7 15.8.2 XXXXXXXX kWh
128.8.0 Reactive energy total (|+R|+|-R|) XXXXXXXX kVarh
128.8.1 Reactive energy total (|+R|+|-R|) T1 XXXXXXXX kVarh
128.8.2 Reactive energy total (|+R|+|-R|) T2 XXXXXXXX kVarh
 15.6.1 Monthly Maximum Demand Active total (|+P|+|-P|) T1 XXXXX.XXX kW
15.6.2 Monthly Maximum Demand Active total (|+P|+|-P|) T2 XXXXX.XXX kW
15.2.0 Monthly Cumulative Maximum Demand Active total (|+P|+|-P|) XXXXX.XXX kW
15.2.1 Monthly Cumulative Maximum Demand Active total (|+P|+|-P|) T1 XXXXX.XXX kW
15.2.2 Monthly Cumulative Maximum Demand Active total (|+P|+|-P|) T2 XXXXX.XXX kW
Billing period counter XXX /
Average power factor of current month X.XXX /
1.7.0 Instantaneous active import power (+P) XXXXX.XXX kW
2.7.0 Instantaneous active export power (-P) XXXXX.XXX kW

1 / Display all segment All segments /

4 96.1.0 Device ID1, manufacturing number XXXXXXXX /
2 0.9.1 Local time HH:MM:SS /
3 0.9.2 Local date DD-MM-YY /
5 32.7.0 Voltage of phase L1 XXX.X V
6 52.7.0 Voltage of phase L2 XXX.X V
7 72.7.0 Voltage of phase L3 XXX.X V
8 31.7.0 Current of phase L1 X.XX A
9 51.7.0 Current of phase L2 X.XX A
10 71.7.0 Current of phase L3 X.XX A
11 13.7.0 Power factor X.XXX /
12 33.7.0 Power factor of phase L1 X.XXX /
13 53.7.0 Power factor of phase L2 X.XXX /
14 73.7.0 Power factor of phase L3 X.XXX /
15 14.7.0 Frequency XX.XX Hz
16 15.7.0 Instantaneous active power total (|+P|+|-P|) XXXXX.XXX kW
17 15.8.0 Active energy total (|+A|+|-A|) XXXXXXXX kWh
18 15.8.1 Active energy total (|+A|+|-A|) T1 XXXXXXXX kWh
19 15.8.2 Active energy total (|+A|+|-A|) T2 XXXXXXXX kWh
20 128.8.0 Reactive energy total (|+R|+|-R|) XXXXXXXX Kvarh
21 128.8.1 Reactive energy total (|+R|+|-R|) T1 XXXXXXXX Kvarh
22 128.8.2 Reactive energy total (|+R|+|-R|) T2 XXXXXXXX Kvarh
23 15.6.0 Monthly Maximum Demand Active total (|+P|+|-P|) XXXXX.XXX kW
24 15.6.1 Monthly Maximum Demand Active total (|+P|+|-P|) T1 XXXXX.XXX kW
25 15.6.2 Monthly Maximum Demand Active total (|+P|+|-P|) T1 XXXXX.XXX kW
26 15.2.0 Monthly Cumulative Maximum Demand Active total (|+P|+|-P|) XXXXX.XXX kW
27 15.2.1 Monthly Cumulative Maximum Demand Active total (|+P|+|-P|) T1 XXXXX.XXX kW
28 15.2.2 Monthly Cumulative Maximum Demand Active total (|+P|+|-P|) T2 XXXXX.XXX kW
29 Instantaneous status word HEX format /
30 Tamper status word HEX format /
31 Billing period counter XXX /
32 Maximum Demand Active total (|+P|+|-P|), for last month XXXXX.XXX kW
Maximum Demand Active total (|+P|+|-P|), data time, for last month DD-MM-YY /
33
34 13.24.12 Average power factor of current month X.XXX /
35 CT ratio numerator XXX /
36 CT ratio denominator XXX /
37 VT ratio numerator XXX /
38 VT ratio denominator XXX /

1 15.8.0 Active energy total (|+A|+|-A|) XXXXXXXX kWh

2 128.8.0 Reactive energy total (|+R|+|-R|) XXXXXXXX kWh
3 15.6.0 Maximum Demand Active total (|+P|+|-P|) XXXXXXXX kW