APL SEM 3P V2 User manual

APL SEM 3P V2
Three‐phase Keypad Energy Meter
Technical Manual

Table of
Contents
1. Use Instruction................................................................................................................... 1
1.1 Overview...................................................................................................................... 1
1.1.1 Construction Profile..................................................................................................... 1
1.1.2 Major Application......................................................................................................... 1
1.1.3 Main Functions ............................................................................................................ 1
1.1.4 Additional Functions.................................................................................................... 2
1.1.5 Major Features ............................................................................................................ 2
1.1.6 Normative References................................................................................................. 2
2. Technical Parameters........................................................................................................ 3
2.1. Operating Voltage ...................................................................................................... 3
2.2. Current Parameters.................................................................................................... 3
2.3. Frequency Parameters............................................................................................... 3
2.4. Self- power Consumption of Meter............................................................................. 3
2.5. Active Metering Accuracy........................................................................................... 3
2.6. Display Mode.............................................................................................................. 4
2.7. Pulse Constant........................................................................................................... 4
2.8. Active Check Output................................................................................................... 4
2.9. Serial Communication Interface................................................................................. 4
2.10. Meter Electromagnetic Compatibility.......................................................................... 4
2.11. Insulation Test............................................................................................................ 5
2.12. Application Environment............................................................................................. 5
2.13. Operating Principle Diagram ...................................................................................... 6
3. Physical Design................................................................................................................. 7
3.1. Construction Diagram................................................................................................. 7
3.2. Dimension Diagram.................................................................................................... 8
3.3. Wiring Diagram........................................................................................................... 8
3.4. Protective Class.......................................................................................................... 9
3.5. Resistance to Heat and Fire....................................................................................... 9
4. Functions........................................................................................................................... 9
4.1. Metering Function....................................................................................................... 9
4.2. Active Energy Metering .............................................................................................. 9
4.3. Active Direction Definition .......................................................................................... 9
4.4. Active Max Demand (MD) Calculation ....................................................................... 9
4.5. Load Control Function.............................................................................................. 10
4.6. Pre-alarming Consumption Function........................................................................ 10
4.7. Reverse Consumption Function............................................................................... 10
4.8. LCD Data Display..................................................................................................... 10
4.9. IR Communication Function..................................................................................... 11
4.9.1 Time Synchronization............................................................................................. 12
4.9.2 Read Meter Data Item ............................................................................................ 12
4.10. Prompts.................................................................................................................... 12
4.11. Data Item Display Function...................................................................................... 12
4.11.1 LCD Display Instruction........................................................................................ 12

4.11.2 Meter Data Display............................................................................................... 13
4.11.3 Meter Data Item Code Table................................................................................ 14
4.12. Prepayment Function ............................................................................................... 19
4.12.1 Account Opening.................................................................................................. 19
4.12.2 Purchase Power ................................................................................................... 22
4.13. Indicator Status......................................................................................................... 22
4.14. Event Recording Function........................................................................................ 22
4.14.1 Trip Enabled Event Recording Function............................................................... 22
4.14.2 General Events Recording Function .................................................................... 24
4.15 Monthly Frozen Recording Function............................................................................ 25
4.16 Daily Frozen Recording Function................................................................................. 25
4.17 Update on Firmware..................................................................................................... 25
4.18 Remote Prepayment Function ..................................................................................... 25
4.19 Operating Mode Function............................................................................................. 26
4.20 Multi-tariff Function...................................................................................................... 26
4.21 Step Electricity Price .................................................................................................... 26
5. Meter Installation Instruction............................................................................................ 26
5.1 Cautions on Operation ................................................................................................... 26
5.2 Tools and Materials Required ........................................................................................ 26
5.3 Installation Dimension Figure......................................................................................... 27
5.4 Cautions on Installation.................................................................................................. 27
6. Transport and Storage..................................................................................................... 28
7. Warranty.......................................................................................................................... 28
8. Troubleshooting............................................................................................................... 28
9. Smart Meter User Manual................................................................................................ 29

General Safety Rules
Foreword
APL SEM 3P V2 Three-phase Keypad Prepayment Energy Meter owns advantages of simple
measurement, simple installation and simple operation. But to avoid personal injury and other
damages related to the meter, it is suggested that this manual should be carefully read, which
is better for usage before being installed, detected, operated and used.
While the designing and producing of APL SEM 3P V2 Three-phase Keypad Energy Meter, its
solidity and reliability and users’ safety and convenience have been already fully considered.
Thus, common faulty operations can be endured. If the meter is reasonably and safely installed
and used according to the guideline, its lifespan will be extended. This product could only be
used within its provisions; AplombTech BD Ltd. has no responsibility for the damage and
personal injury caused by faulty operations, operation and the usage beyond the specific range.
Safety Information
In each chapter of this manual, different letter symbols and graphic symbols which are
adopted to express the danger according to different levels of danger will be explained.
Please pay attention!
Caution!
This sign is to remind of possible danger, which will possibly cause some severe hurt and
damage to people and the equipment.
Attention!
This sign is to remind of possible unexpected situation, which might result in personal injury,
equipment damage and data error.
Safety Rules
Pay attention to this product’s rated voltage and maximum current.
Pay attention to this product’s measured load capacity.
Correct and reliable installation and connection.
Pay attention to effective cross-sectional area of wire connection.
Do not touch bare wire or use bare wire to connect.
Please don’t use this product in explosive environment.
Keep the product’s surface clean.
Pay attention to meter’s seal management.
Don’t immerse the meter in water and any chemical substance and don’t use any
chemical substance to clean the meter.

Displays are all examples in this manual, which may have some difference from the real
data in meters.
Since it is life-threatening to touch live components, the power must be cut off before
installation and replacement.
Please obey local safety rules; Installation and replacing of meter only could be done by
qualified person with specified technology.
When installing meter, pay attention to meter’s safety; Appearance damaged or fell downed
meters are not allowed to install.
Washing the meter by water is not allowed.
The Meter Standard applies to production and test in Meter Electronics, not the standard for
client test or acceptance. Only IEC standards apply to the client inspection and acceptance.
COPYRIGHT NOTICE
Sustainable product improvement is a policy in AplombTech BD Ltd. Therefore, the company
reserves rights to change product operational details and specification. Contents of this manual
may be changed without special notification. Without permission in writing from AplombTech BD
Ltd., any part of the manual cannot be reproduced or spread in any form or by any means for
any purpose by any individuals or other companies.

1
1. Use Instruction
1.1 Overview
1.1.1 Construction Profile
Figure 1.1.1: APL SEM 3P V2 Three-phase Keypad Prepayment Energy Meter
1.1.2 Major Application
APL SEM 3P V2 Three-phase Keypad Prepayment Energy Meter takes digital medium as
information exchange media. It is an active electric energy meter in which users load in pre-
purchased energy, and it takes energy as its billing. The meter includes measurement unit,
real-time clock unit, infrared communication, load switch, GPRS communication module and
other auxiliary equipment.
1.1.3 Main Functions
When energy balance is 0, the meter can send out power off signal to control load for
auto switching off, and it shall auto restore the power supply after the new purchased energy
is loaded.
Record events of open terminal cover trip, open face cover trip, overload trip, power off,
reverse tampering, phase off, relay off, time synchronization, power purchase, meter
reset, demand reset, event reset and data alteration tampering, etc. (see 4.14 Event
Recording Function)

2
1.1.4 Additional Functions
Active energy multi-tariff metering.
Demand calculating.
Auto detection.
Realize users’ load detecting and controlling.
Detect grid parameters including real-time power, voltage, current and power factor.
Enable to display by pressing buttons after power outage.
1.1.5 Major Features
Prepaid mode- it is a power consumption mode by paying first and using electricity later.
APL SEM 3P V2 Three-phase Keypad Prepayment Energy Meter takes amount as its
electricity billing. In conditions of prepaid mode, electricity consumer purchases amount
at first and the meter subtracts the remaining credit amount equivalent to the
consumption. When remaining amount is 0 or the overdraft energy allowed by both
parties, it will send out power off signal to control load switch automatically cut off.
APL SEM 3P V2 Three-phase Keypad Prepayment Energy Meter adopts CTS algorithm,
which has a set of security management system with a high-level security and is
completely compatible with the CTS management system deployed in Bangladesh.
1.1.6 Normative References
IEC62052-11 Electricity metering equipment (A.C)-General requirements tests and test
conditions- Part 11: Metering equipment.
IEC62053-21 Electricity metering equipment (A.C)-Particular Requirements-Part 21:
Static meters for active energy (classes 1 and 2).
IEC62055-31 Electricity metering -Payment Systems-Part 31: Particular requirements
Static payment meters for active energy (class 1 and 2)
IEC 62056-21 Electricity metering –Data exchange for meter reading, tariff and load
control –Part 21: Direct local data exchange
IEC 62056-42 Electricity metering –Data exchange for meter reading, tariff and load
control –Part 42: Physical layer services and procedures for connection oriented
asynchronous data exchange
IEC 62056-46 Electricity metering –Data exchange for meter reading, tariff and load
control –Part 46 –Data link layer using HDLC-protocol
IEC 62056-53 Electricity metering –Data exchange for meter reading, tariff and load
control –Part 53: COSEM Application layer
IEC 62056-61 Electricity metering - Data exchange for meter reading, tariff and laod
control - Part 61: Object identification system
IEC 62056-62 Electricity metering - Data exchange for meter reading, tariff and load
control –Part 62: Interface classes

3
2. Technical Parameters
2.1. Operating Voltage

Rated voltage Un
3×230/400 V

Operating voltage range
60% Un ~ 130% Un
The meter can work normally within the operating voltage range.
Limited range of operating voltage 0 Un ~ 190% Un
Within this limited operating voltage range, the meter will show no damage. It can
guarantee metering during normal display, but cannot ensure the metering accuracy
class.
Meanwhile, the load control equipment cannot operate. After the operating voltage returns
to normal, the meter can work normally and the accuracy class will remain unchanged.
2.2. Current Parameters
Imax 100 A
Starting current (0.4%Ib) 40 mA
Metering current range 40 mA ~ 100 A
Common current specification 10(100) A
2.3. Frequency Parameters
Rated frequency fn 50 Hz
Frequency application range 47.5 Hz ~ 52.5 Hz
2.4. Self- power Consumption of Meter
Power consumption of voltage circuit ≤2 W 6 VA
Power consumption of current circuit ≤2.5 VA
2.5. Active Metering Accuracy
The accuracy of active energy measurement of APL SEM 3P V2 conforms to
IEC62053-21 Class 1.0.
Table 1: Error limit in percentage for active class 1
Load value
Power
factor
Error limit in
percentage
Meter standard
IEC62053-21
0.05Ib≤I< 0.10 Ib
1
±1.5
±0.7
0.10Ib≤I≤Imax
1
±1.0
±0.5
0.1Ib≤I< 0.2Ib
0.5L
0.8C
±1.5
±1.5
±0.7
±0.7
0.2Ib≤I≤Imax
0.5L
0.8C
±1.0
±1.0
±0.5
±0.5

4
2.6. Display Mode
The meter displays
numeric data.
Display mode LCD display of wide-temperature range
Character digits for data item display 8 digits including 6 integers and 2 decimals
Character digits for data ID display 3 digits
2.7. Pulse Constant
Active pulse constant 400 imp/kWh
Reactive pulse constant 400 imp/kvarh
2.8. Active Check Output
The meter is equipped with special pulse indicator for testing active energy (LED is on the
nameplate of meter). In order to ensure the accuracy of active measuring test, according to
different current test points, pulse quantity collected from test should be incremented with the
increase of current, and reasonably select pulses between the numbers 1~8.
2.9. Serial Communication Interface
Interface 1:




Type Baud
Rate
Application
Pattern
Serial bi-direction communication interface
2400 bps
Data reading and related data item configuration
Non-modulated IR communication
Interface 2:




Type Baud
Rate
Application
Pattern
Serial bi-direction communication interface
9600 bps
Data reading and related data item configuration
485 communications
Interface 3:




Type Baud
Rate
Application
Pattern
Serial bi-direction communication interface
9600 bps
MCU and GPRS module communication interface
GPRS Communication
2.10. Meter Electromagnetic Compatibility
No.
Item
Requirements of
IEC62052-11
Meter Standard
1
Electrostatic
Discharge Immunity
Contact
Discharge
8 kV
10 kV
Air Discharge
15 kV
18 kV
2
HF Electromagnetic
Field Immunity
80 MHz-2 GHz
30 V/m
80 MHz-2 GHz
30 V/m
3
Fast Transient Burst
4 kV/100 kHz
4.3 kV/100 kHz

5
4
Radio Interference
Test
Equipment of CISPR
22 Class B
Equipment of CISPR
22 Class B
5
Immunity to conducted
disturbances induced
by radio-frequency
fields
150 kHz－80 MHz
10 V
150 kHz－80 MHz
10 V
6
Surge Immunity
4 kV
4.3 kV
Table 1: EMC
2.11. Insulation Test
No.
Item
Requirements of
IEC62052-11
Meter Standard
1
Impulse
Voltage
Insulation Class II
6 kV
6.5 kV
2
AC Voltage
Between current circuit and
the earth (insulation class
II)
4 kV (5 mA)
4.1 kV (5 mA)
Between auxiliary terminals
2 kV (5 mA)
2.5 kV (5 mA)
Table 3: Insulation test
2.12. Application Environment
No.
Item
Requirements of IEC
62052-11
Meter Standard
1
Temperature
Operating temperature
range
-25 °C～55 °C
-25 °C～70 °C
Limited range of
operation
-40 °C～70 °C
-40 °C～70 °C
Limit range for storage
and transport
-40 °C～70 °C
-40°C～80°C
2
Humidity
Annual mean
≤75%
≤75%
For 30 days, these days
being spread in natural
manner over one year
≤95%
≤95%
Occasionally on other
days
≤85%
≤85%
Table 4: Application environment

6
2.13. Operating Principle Diagram
This meter circuit, centralized with SOC single chip (with internal measurement module, real
time clock and temperature testing compensation circuit etc.), consists of main control circuit
module, memory circuit module composed of memory chip, power supply circuit module,
cover open detection module, GPRS communication module, LCD display and audio
reminding user information display module as well as IR emission and IR receiving circuit
module etc.
The current sampling uses measurement method of current transformer, while voltage
sampling uses dividing resistance network. The meter adjustment is completed via software.
LCD Display
Active Pulse output
Reactive Pulse output Terminal Cover Opening
Detection
LED Warning Indicator
GPRS
Keypad ASIC
Memory
RS485 Port
Battery
Meter Cover Opening
Detection
Battery Detection
RTC
Infrared Port
Power
Outage
Detection
Breaker
Power Supply
Circuit
3 Phase out 3 Phase in 3 Neutral in 3 Neutral out
Meter Working Principle Diagram

7
3. Physical Design
3.1.Construction Diagram
1
Face cover
7
GPRS module
receiving LED
13
Keyboard
2
LCD display
8
Flip cover
14
Low energy alert
LED
3
Active pulse LED
9
Terminal cover
15
IR communication
port
4
Reactive pulse LED
10
Sealing screw for
terminal cover
16
Base
5
Alert LED
11
Terminal block
6
GPRS module
sending LED
12
Flip cover sealing
screw

8
3.2.Dimension Diagram
Outline dimension: 285 mm ×175 mm ×88.5 mm
3.3. Wiring Diagram
All movable terminals of the meter locate in the connection terminal cover with secured
screws fitted with user seal to prevent from operations such as unauthorized connection or other
settings, etc.

9
3.4. Protective Class
The test is carried out with the energy meter manufactured by AplombTech BD Ltd. in
accordance with IEC60529-4.
3.5. Resistance to Heat and Fire
Resistance to heat and fire class: V0 (all the casing made out of heat-resistant and fire-
retardant material)
4. Functions
4.1. Metering Function
APL SEM 3P V2 Three-phase Keypad Prepayment Energy Meter can measure reverse power
in the same way of measuring forward power and the energy can be accumulated in total active
energy and active energy of each billing month. It can measure total active power and store the
data and calculate the credit balance, then store the data; meanwhile have them indicated by LED.
The meter measures real-time power by pulse constant and pulse interval.
4.2. Active Energy Metering
Active energy unit: kWh, reactive energy unit: kvarh.
The metering phasor diagram in right connection as:
U
a
фa Ia
Ic
фc
фb
Ub
U Ib
c
Active power expressed as: P =P1+P2+P3=UaIa cosφa+ UbIbcosφb+ UcIc cosφc
Reactive power expressed as: Q =Q1+Q2+Q3 =UaIa sinφa+ UbIb sinφb+ UcIc sinφc
Active energy expressed as: Ep =∫Pdt=∫（UaIa cosφa+ UbIb cosφb+ UcIc cosφc）dt
Reactive energy expressed as: Eq =∫Qdt=∫（UaIa sinφa+ UbIb sinφb+ UcIc sinφc）dt
4.3. Active Direction Definition
The APL SEM 3P V2 Meter, developed by AplombTech BD Ltd., uses the
conception of forward power and reverse power from the customers’ point of view.
Customers’ forward power =power received from the grid.
Customers’ reverse power =power sent to the grid.
4.4. Active Max Demand (MD) Calculation
Active maximum demand unit is kW.

10
Active MD calculation method is slide calculation method.
MD calculation cycle is 15 min.
MD slide window time is 1 min.
4.5. Load Control Function
The meter can be programmed to set load control threshold.
When the meter detects current power of one phase is higher than Sanctioned load, overload
alert will be triggered. Alert LED will blink in red. If alert duration reaches specified 30 secs, the
meter will cut off user load, alert LED will keep lighting in red. The meter relay will auto close
after 120 sec or input “0” “0” and press Enter key on UIU to
close relay. If overload trip times >3 within 30 min, the meter relay will auto close after 30
min or input “0” “0” and press Enter key to close relay.
When load threshold is 0, this function will be disabled.
4.6. Pre-alarming Consumption Function
The meter can be programmed to set pre-alarming threshold.
If the energy balance is lower than pre-alert threshold, the alert indicator will blink in red.
When energy balance is lower than pre-alarming threshold (which can be queried via
UIU), pre-alarming function will be triggered. Low energy alert LED indicator shall blink.
When energy balance is deducted to 0, the relay will trip and alert LED indicator shall keep
lighting in red.
When pre-alarming threshold value is 0, the function will be disabled.
4.7. Reverse Consumption Function
When the meter detects reverse consumption in Phase A, B and C, alert LED indicator
shall blink in red and reverse tag “ ” corresponding with Phase A, B and C shall keep
lighting.
Reverse consumption measured as forward.
4.8. LCD Data Display
Item Introduction
Power purchase token is correct and accepted
and “accept” is displayed.
Power purchase token is wrong and rejected and “reject” is
displayed.
When “old” is displayed, it means token is expired.
When “used” is displayed, it means the token is a
used one.

11
Overload consumption—When consumption load is over the
load threshold specified, “over po” will be displayed and the
power will be cut off within specified time.
Input “0”“1”and press Enter key, the consumed energy
100.00 kWh and the corresponding code 001 are
displayed.
Input “0”“2” and press Enter key, max. demand 2.00 kW in
current month and the corresponding code 002 are
displayed.
Input “0” “7” and press Enter key, the energy balance
200.00 Tk and energy balance code 007 are displayed.
Input “3” “1” and press Enter key, the real-time power 1.00
kW and display code 031 are displayed.
Input “1” “5” “6” and press Enter key, current electricity
price 1.0000 Tk and display code 156 are displayed.
4.9.IR Communication Function
The meter equips with non-modulated IR optical communication interface and 485 interfaces.
By HHU with serial communication port, the meter can realize time synchronization and meter
data items reading and other functions.

12
4.9.1 Time Synchronization
The meter can carry out time synchronization via communication interface.
4.9.2 Read Meter Data Item
Via communication interface, it is available to read data items in meter, including current
consumption data, energy balance, meter clock, previous 12 months consumption data, all kinds
of meter data items and log data.
4.10. Prompts
ACCEPT: TOKEN accepted
REJECT: TOKEN rejected
OLD: TOKEN expired
USED: TOKEN used
OK: Operation succeeded
Err_01: Error in manufacturer code
Err_02: Key expiration error
Err_03: DDTK error
Err_04: Overflow Error
Err_05: Key type Error
Err_06: Data format Error
Err_07: Token type error
Err_08: Appointed function Error
NULL: Reserved
4.11. Data Item Display Function
4.11.1 LCD Display Instruction
Firstly, initialize LCD after power on, LCD fully displays and automatically enters the set
display mode of power information after 4 seconds. LCD in full screen is as follows

13
1
Credit level indication
2
Display code area
3
Tariff display area
4
Phase A tag
5
Phase A current
reversed
6
Battery tag
7
Phase B tag
8
Phase B current
reversed
9
Relay state tag
10
Phase C tag
11
Open cover alert
12
Phase C current
reversed
13
Power factor tag
14
Magnetic detection alert
15
Quadrant tag
16
Smile face, sad face
17
Unit display area
18
Data display area
Data indication: 6 digits of integer and 2 digits of decimal. The unit of power is kWh, the unit of
active power is kW.
Display code: With 3 digits code to indicate respective data item (please see 4.11.3 Meter
Data Item Code).
4.11.2 Meter Data Display
Display content includes consumption data, configuration data, and history data and so on.
For data item length over 8 digits (e.g. date & time and meter No. etc.), the meter will
display in split screens.
For credit balance, the data item can be used to indicate the specific value; meanwhile
bar can be displayed on LCD screen.
credit balance in meter< 10TK, no bar displays;
10TK ≤credit balance< 100 TK, the first bar displays;
100 TK ≤credit balance< 1000 TK, the first 2 bars display;
1000 TK ≤credit balance< 10000 TK, the first 3 bars display;
10000 TK ≤credit balance< 100000 TK, the first 4 bars display;
100000 TK ≤credit balance< 1000000TK, the first 5 bars display;
1000000 TK ＜credit balance, all 6 bars display.

14
4.11.3 Meter Data Item Code Table
Display No. is 3-digit.
Display
No.
Data Item Name
Display
No.
Data Item Name
01
Accumulative active consumption
02
Max. demand of current month
03
Max. demand occurrence time in current
month
04
Accumulative consumed amount
05
TOKEN sequence No.
06
Accumulative purchased amount
07
Remaining amount
08
Overdraft amount
09
kWh of current month
10
Key Number
11
Last recharging time
12
Alert threshold
13
Maximum load threshold
14
Demand of last month
15
Overdraft threshold
16
Delay time to overload trip
17
Data transfer day
18
Frozen monthly kWh of the last 1st time
19
Frozen monthly kWh of the last 2nd time
20
Frozen monthly kWh of the last 3rd time
21
Frozen monthly kWh of the last 4th time
22
Frozen monthly kWh of the last 5th time
23
Frozen monthly kWh of the last 6th time
24
Frozen monthly kWh of the last 7th time
25
Frozen monthly kWh of the last 8th time
26
Frozen monthly kWh of the last 9th time
27
Frozen monthly kWh of the last 10th time
28
Frozen monthly kWh of the last 11th time
29
Frozen monthly kWh of the last 12th time
30
Consumed amount of current month
31
Real-time power
32
Demand calculating method
33
Demand calculating cycle
34
Slide window time
35
Key reversion No.
36
Tariff index
37
Reserved
38
Overdraft consumption tag
39
Frequency
40
Terminal cover-open counts
41
Last terminal cover-open time
42
Last 2nd terminal cover-open time
43
Last 3rd terminal cover-open time
44
Last 4th terminal cover-open time

15
45
Last 5th terminal cover-open time
46
Overload trip counts
47
Last overload trip
48
Last 2nd overload trip
49
Last 3rd overload trip
50
Last 4th overload trip
51
Last 5th overload trip
52
Power off counts
53
Last power off time
54
Last 2nd power off time
55
Last 3rd power off time
56
Last 4th power off time
57
Last 5th power off time
58
Reverse event counts
59
Last reverse occurrence time
60
Last 2nd reverse occurrence time
61
Last 3rd reverse occurrence time
62
Last 4th reverse occurrence time
63
Last 5th reverse occurrence time
64
Hoarding credit limit
65
Meter ID
66
Active pulse constant
67
Reserved
68
Meter hardware version No.
69
Meter software version No.
70
SGC
71
Working mode (0 user mode/1 factory
mode)
72
Current time
73
Current date
74
Reserved
75
Charging Mode (0-postpaid; 1-prepaid)
76
Last recharge token
77
Last 2nd recharge token
78
Last 3rd recharge token
79
Last 4th recharge token
80
Last 5th recharge token
81
Last 1st recharge Tk amount
82
Last 2nd recharge Tk amount
83
Last 3rd recharge Tk amount
84
Last 4th recharge Tk amount
85
Last 5th recharge Tk amount
86
Real time voltage
87
Reserved
88
Reserved
89
L circuit current
90
N circuit current
91
Reserved
92
Operating mode (0-Operational mode 1-
Non-operational mode)