DZG WH4013 User manual

Static Electricity Meter
WH4013
Single Phase Electronic Electricity Meter
for
DIN Rail-Assembling
Date
11.06.2014
Last changes
01.09.2020
DZG Metering GmbH, Heidelberger Str. 32, D-16515 Oranienburg
User Manual WH4013

User Manual WH4013
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The contents of this user manual are copyright reserved.
Translations, prints and copies are only allowed authorized by DZG.
All mentioned brand names and product names are ownership of DZG Metering GmbH.
Contents may be completed, changed or deleted without prior announcements.
The descriptions of this user manual are not integral part of contracts.
©DZG Metering GmbH All rights reserved.
DZG Metering GmbH
Heidelberger Str. 32
D-16515 Oranienburg

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Notice:
This manual describes electricity meters of the type DVH4013. It includes all necessary information
for assembling, setting into operation and use of the meter.
Used Symbols
Danger through Electric Voltages
The symbol indicates warnings, which may lead to personal injuries or death if it is
ignored. Take all necessary precautions to avoid danger!
Warning
The symbol indicates warnings to a possible dangerous situation which may lead to
personal injuries or damage to properties.
Avoid dangerous situations!
Attention!
„Attention“ indicates warnings, which may lead to damage of properties if not
observed.
Notice
„Notice“ indicates important information in the manual.
The symbol is printed on the nameplate an references to further information in a
instruction manual prepared for the customer.

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Content
1Properties ...................................................................................................................................... 7
1.1 Common................................................................................................................................ 7
1.2 Appropriate Use................................................................................................................... 7
1.3 Properties.............................................................................................................................. 7
1.3.1 Technical Standards........................................................................................................... 8
2Safety.............................................................................................................................................. 9
2.1 Responsibility ....................................................................................................................... 9
2.2 Common safety instrcutions................................................................................................ 9
2.3 Service- and warranty instructions .................................................................................... 9
2.4 Disposal (product end of life information)......................................................................... 9
2.5 Environment......................................................................................................................... 9
2.6 Service and Warranty.......................................................................................................... 9
3Typecode...................................................................................................................................... 10
4Assembling and Installation....................................................................................................... 11
4.1 Assembling.......................................................................................................................... 11
4.2 Installation.......................................................................................................................... 12
4.3 Protection Housing............................................................................................................. 13
5Firmware Version....................................................................................................................... 14
6Nameplate.................................................................................................................................... 14
7LCD-Display................................................................................................................................ 15
8RS485 Interface........................................................................................................................... 15
9Test LEDs.................................................................................................................................... 15
10 Components................................................................................................................................. 16
10.1 Blockdiagramm.................................................................................................................. 16
10.2 Real time clock (RTC) ....................................................................................................... 16
10.3 S0-Pulse Output ................................................................................................................. 17
11 Functionality ............................................................................................................................... 18
11.1 Measurement...................................................................................................................... 18
11.2 Firmware Architecture...................................................................................................... 18
11.3 Energy Checksum Mechanism ......................................................................................... 18
11.4 Fatal Error.......................................................................................................................... 19
11.5 Additional Functions ......................................................................................................... 19
11.5.1 Demand channel.......................................................................................................... 19
11.5.2 History data record...................................................................................................... 19
11.5.3 Instantaneous parameter measurements...................................................................... 19
11.5.4 Load profile................................................................................................................. 19
11.5.5 Second index ............................................................................................................... 20
11.5.6 Security functions........................................................................................................ 20
12 Registers ...................................................................................................................................... 21
12.1 Instantanous data............................................................................................................... 21
12.2 Basic Parameter................................................................................................................. 21
12.2.1 Status Register............................................................................................................. 22
12.3 Load Profile Parameter..................................................................................................... 22
12.4 Display Settings.................................................................................................................. 23
12.5 Energy Register.................................................................................................................. 23
12.6 Maximum Demand Register............................................................................................. 24
12.7 Logging Registers............................................................................................................... 26
12.7.1 Logging Demand Resets ............................................................................................. 26

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12.7.2 Logging Power Outages.............................................................................................. 27
12.7.3 Logging Clock Synchronisation.................................................................................. 28
12.8 Accuracy Test..................................................................................................................... 29
Tables
Tab. 2: Technical Properties ............................................................................................................... 8
Tab. 3: Typecode ................................................................................................................................ 10
Tab. 4: Terminal block ...................................................................................................................... 13
Tab. 5: Description Nameplate.......................................................................................................... 14
Tab. 6: Instantanous Data ................................................................................................................. 21
Tab. 7: Basic Parameter .................................................................................................................... 21
Tab. 8: Status Register....................................................................................................................... 22
Tab. 9: Load Profile Parameter........................................................................................................ 22
Tab. 10: Display Settings .................................................................................................................. 23
Tab. 11: Energy Registers.................................................................................................................. 23
Tab. 12: Maximum Demand Registers............................................................................................. 24
Tab. 13: Logging Demand Registers................................................................................................. 26
Tab. 14: Logging Power Outages...................................................................................................... 27
Tab. 15: Logging Clock Synchronisation......................................................................................... 28
Tab. 16: Quantity of pulses................................................................................................................ 29
Pictures
Abb 1: Housing.................................................................................................................................... 11
Abb 2: Housing Dimensions ............................................................................................................... 11
Abb 3: Terminal Block........................................................................................................................ 12
Abb 4: Connection diagramm............................................................................................................ 12
Abb 5: Label Protection Housing....................................................................................................... 13
Abb 6: Nameplate................................................................................................................................ 14
Abb 7: LCD.......................................................................................................................................... 15
Abb 8: Pin Definition RS485 .............................................................................................................. 15
Abb 9: Blockdiagramm....................................................................................................................... 16

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Abbreviations
+A Import active energy (to customer)
-A Export active energy (from customer)
dd day
DIN German Institut for Standards
EN European Standard
FNN Forum Netztechnik/Netzbetrieb im VDE
FIFO First IN-First OUT
HH or hh Hour
IEC International Electrotechnical Commision
Imp/kWh quantity of pulses each kWh
Imp/kvarh quantity of pulses each kvarh
IR Infrared
LCD Liquid Crystal Display
LED Light Emitting Diode
MM or mm Month or Minutes
OBIS Object Identification System
+P Import active power
-P Export active power
PTB Physikalisch Technische Bundesanstalt
+Q Import reactive Power
-Q Export reactive Power
RTC Real Time Clock
+R Import reactive energy (inductive)
-R Export reactive energy (capacitive)
SS or ss Seconds
TOU Time of Use
Tx Tariff (z.B. T1 Tariff1, T2 Tariff2, ...)
VDE Association of Electrotechnic/Elektronic/Informationtechnic e.V.
yyyy Year

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1Properties
1.1 Common
Welcome to use single phase Din Rail meter. Let’s introduction it’s functions and operations of this
product.
This meter is 1phase –2wire direct connected electricity meter. It adopts the advanced technology of
LSI (Large Scale Integrated circuit) and digital signal processing. The craftworks of our product are
exquisite and the functions provided are comprehensive and client-oriented. The energy meter is an
intelligent instrument equipped with leading technology.
The functionality of the single phase Din Rail energy meter includes active energy and demand
measurement, instantaneous measurement for voltage, current, frequency, power factor and power,
RS485 communication, anti-tamper protection and event record, power quality detection, load profile,
pulse output for test, self check.
1.2 Appropriate Use
The electricity meter WH40 and all versions of its are allowed to be used for measuring electrical
energy only.
1.3 Properties
Type
Single phase electricity meter
direct connection
Voltage
Nominal voltage Un
230 VAC
Voltage range
0.8 –1.15 Un
Frequency
Nominal frequency fn
50 Hz
Frequency range
0.98 –1.02 fn
Current
Reference current Iref = Ib = 10 Itr
5 A
Maximum current Imax
65A
Minimum current Imin
0.25 A
Starting current Ist
0.004 Ib
Accuracy
Cl. B
Class B in compliance with DIN EN 50470-1,-3
Measuring Active Energy
One Energy Direction
+A reverse locking
Meter constant
LED-Output
1000 Imp/(kWh
Display
LCD
6 digit
Life cycle
> 12 years
RS485- Data Interface
Connector
RJ10-Socket
Parameter
9.600 bps, 8E1 (setable)
Communication protocol
Modbus RTU
Power Consumption
Voltage circuit
< 2 W / 10 VA at Un
Current circuit
< 4 VA at Ib
Temperature Range
Typical Operation
-25°C to +70°C
Storage
-40°C to +85°C
EMC Properties

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Isolation
4 kV AC, 50 Hz, 1min
High Voltage
10 kV, Impuls 1,2/50 µs
Housing
Dimension
DIN-Rail 86x35x62 mm
Material
fiber-glass reinforced Polycarbonat
(flame resistant EN 62053-21, recycable)
Class of protection
II
Degree of protection
IP 51
Weight
Weight
appr. 0,25 kg
Tab. 1: Technical Properties
1.3.1 Technical Standards
IEC 62053-21: Static meters for active energy (classes 1 and 2)
IEC 62052-11: Electricity metering equipment (AC)-General requirements, tests and test conditions –
part 11: metering equipment
IEC 62053-31: Electricity metering equipment (AC)- Particular requirements –part 31: Pulse output
devices for electromechanical and electronic meters (two wires only)
EN 50022: Low voltage switchgear and controlgear for industrial use; mounting rails,
top hat rails, 35 mm wide, for snap-on mounting of equipment
[1] PTB Requirements:
[1.1] „Anforderungen an elektronische und software-gesteuerte Messgeräte und
Zusatzeinrichtungen fr Elektrizität, Gas, Wasser und Wärme“, PTB-A 50.7
2002
[1.2] „Messgeräte fr Elektrizität, Elektrizitätszähler und deren
Zusatzeinrichtungen“, PTB-A 20.1, Dezember 2003
[2] Legal Directives:
“Legal Metrology Guide/ general rules”, published in Federal Journal Nr 108a on June 15th
2002
[3] WELMEC-Guide 7.2, software guide

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2Safety
2.1 Responsibility
The owner or provider is responsible for the proper use of the device. The installation, putting into
operation and reinstallation of the meter is only allowed to be done by electrically skilled persons,
which got knowledge about the contents of this user manual.
2.2 Common safety instrcutions
For installation, setting into operation and deinstallation of the device the local requirements for safety
requirements has to be observed.
Danger
Inappropriate use of parts under high voltage may lead to grave injuries and
accidents, which may be fatal even with 230V.
The conductors which are connected to the device must be disconnected to the mains
during assembling and installation. It must be used a prevention for being switched
on accidentally.
The device is not allowed to be used out of specifications.
2.3 Service- and warranty instructions
Damaged devices can’t be repaired by yourself. The warranty and liablity will be terminated with
opening the device. The same applies to damages caused by external influences.
For the device no servicing is required.
2.4 Disposal (product end of life information)
This meter was designed and built by DZG to provide many years of service,
and is backed by our commitment to provide high quality support. When it eventually reaches
the end of its serviceable life, it should be disposed of in accordance with local or national
legislation.
2.5 Environment
This meter is designed for indoor use or in a cabinet environment only (avoiding extreme
weather conditions) in accordance with IEC 62052-11 and IEC 62053-21, with the terminal
cover fitted.
2.6 Service and Warranty
This meter product is warranted against defects in material and workmanship for
a period of one year from date of shipment. During the warranty period DZG will at
its option, either repair or replace products which prove to be defective. For warranty service
or repair, this product must be returned to a service facility designated by DZG. DZG
does not warrant that the operation of the meter or firmware will be uninterrupted or
error free.
Damaged devices can’t be repaired by yourself. The warranty and liability will be terminated with
opening the device. The same applies to damages caused by external influences.
For the device no servicing is required.

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3Typecode
1
2
3
.
4
5
direct connection
W
two-wire single-phase meter
H40
Static meter
13
range Imax / Iref =1300%
Tab. 2: Typecode

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4Assembling and Installation
4.1 Assembling
The meter constructed for assembling on DIN-rail TH 35-7.5 according to IEC 60715.
Nr
Element
1
Meter Hook
2
LCD
3
DIN rail space
4
Meter cover
5
Meter case
6
Terminal Block with cover
Abb 1: Housing
Abb 2: Housing Dimensions

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4.2 Installation
The connection diagram printed on the housing needs to be considered connecting the meter to the
mains power.
Abb 4: Connection diagramm
Nr
Terminal
Term
inal
Nr
Terminal-
Ø[mm]
Terminal screw
torque M [Nm]
1
Current In L1
1
6,5
M4 Pozidrive PZ2
1,2 Nm < M < 1,5
Nm
2
Current Out L1
3
3
Neutral wire
4
4
S0-Output (pos voltage)
20
5
S0-Output (neg. voltage)
21
Abb 3: Terminal Block

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Data Interface
8
RS485 A
RS485 A
RS485 B
RS485 B
PIN 1
PIN 2
PIN 3
PIN4
RJ10 (female)
Tab. 3: Terminal block
Warning
The requirements of the netprovider need to be fullfilled.
Selective hedges needs to be used according requirements of the netprovider.
Attention!
Damage of the terminals due to high torque
The specified maximum torques must not be exceeded!
Ensure that the connected lines are fixed with the needed torque compliant to EN
60999 for a safe connection. The needed torque depends on the type of used lines and
the maximum current.
4.3 Protection Housing
The assembled meter base and meter cover will be protected against unauthorized opening with a
manufacturer label (format 18x26 mm, corner radius 0,5 mm) on the side of the housing.
Abb 5: Label Protection Housing

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5Firmware Version
The firmware of the meter has the version number FW1.05 with the checksum 3B0987(Hex). The
firmware version is printed to the nameplate.
6Nameplate
Abb 6: Nameplate
Nr
Element
Function
1
RJ10 female
RS485 interface
2
sealing terminal cover
3
year of certification
4
electrical characteristics
5
LCD
6 digits without decimal
6
serial number
number and barcode 128
The first 2 charakter are used for the year of production
f.e. 14 = 2014
7
LED
test LED 1000 Imp/kWh
8
constant S0-pulse output
500 Imp/kWh
9
symbols
single phase, protection class, reverse locking
10
firmware version
FW 1.05
11
type code
12
number approval document
Tab. 4: Description Nameplate

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7LCD-Display
The LCD has the following format:
- LCD size: 24.39mm × 9mm
- Digit size: 2.72mm × 6mm
Abb 7: LCD
The counter value of energy for +A is displayed. On the right side the unit kWh is printed on the
housing.
8RS485 Interface
The interface is provided for meter reading and programming according to Modbus-RTU via RS485.
The pin definition is as following:
Pin 1—A
Pin 2—A
Pin 3—B
Pin 4—B
The Baudrate can be selected with 9600, 19200 or 38400 Bd.
The Modbus-RTU protocol is described in an own document
9Test LEDs
The meter has one pulse LED for active energy with 1000 Imp/kWh.
The ON-time of a pulse is 40 ms.
Abb 8: Pin Definition RS485

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10 Components
10.1 Blockdiagramm
Abb 9: Blockdiagramm
Current measuring: manganin shunt
Voltage measuring: resistor devider
A/D: analog to digital converter for the sampled voltage and current
MCU: Micro Controller Unit
RTC: real Time Clock
Communication interface: RS485-Interface (RJ10 female)
Data storage: nonvolatile storage for energy register +A and meter parameter in
EEPROM and Dataflash memory.
Display: LCD with 6 digits
LED Pulse output: active energy +A, 1000 Imp/kWh
Pulse Output: S0-Pulse Output for active energy +A, 500 Imp/kWh
10.2 Real time clock (RTC)
AC power and super capacitor are powering the internal clock.
Built-in 32.768 kHz quartz oscillator, frequency adjusted for high precision (±5x10-6 at ambient
temperature 25 °C)
accuracy: <± 0.5 sec/day at 23 °C. The variation of the time-keeping accuracy with temperature
is less than 0.1s/℃/day).

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The RTC uses Gregorian calendar. (100years calendar including leap year).
The time and date can be set through the RS485-interface by software.
10.3 S0-Pulse Output
The meter provides on terminal 20 (positive voltage) and 21 (negative voltage) a pulse output for
active energy +A according IEC 62053-31:
Maximum voltage: 80 VDC (standard is 27 V)
Maximum current: 60 mA (standard 27 mA)
Pulse constant: 500 Imp/kWh
Pulse duration: 80 ms

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11 Functionality
11.1 Measurement
The meter measures one phase active energy +A with accuracy class B.
The line current is measured with a shunt-resistor. The line-voltage is divided with resistors to a
voltage level which can be measured by the A/D-converter unit.
The voltages of the shunt resistor and voltage divider are measured with an A/D unit which supports
the MCU with the realtime digital values for voltage and current.
The MCU calculates in realtime active power, energy and demand based on the converted analog
signals for voltage and current.
The energy for +A is counted in a register which is stored in a non volatile memory. This value is
displayed on the LCD.
The measured energy is indicated on an LED with 1000 Imp/kWh used for testing the accuracy of the
meter. Additionally the energy is put to a S0-puls output with 500 Imp/kWh used for external
registration devices.
11.2 Firmware Architecture
The functionality of the meter is periodically processed in the main loop of the application layer. The
main loop is interupted by interrupt service routines based on timer events and asynchron events.
11.3 Energy Checksum Mechanism
The energy register is stored once in the internal RAM of the MCU and once in the external
EEPROM. In each memory two backups are available. The contents, original and backup, are stored
together with a checksum.
Before the current energy consumption (△E) is accumulated to the energy registers in the RAM or
EEPROM the energy registers are red out and the checksum is controlled. If the check sum is not
correct the backup registers are used.
The current △E is accumulated to the energy register and the check sum is calculated new. This
information are stored to the memories. Finally a new back up of the energy registers and the
checksum is created.

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11.4 Fatal Error
The meter has an internal software watch dog. If the firmware is running abnormally without feeding
the watch dog periodically, the watch dog will reset the main CPU. Watchdog events lead to fatal error
if the events occur more times within a defined time slot.
The meter has implemented a self-monitoring system. If the meter recognizes no proper operation
(measurement, memory check, watchdog events) so that billing relevant values may not be used
anymore it displays a „ Fatal Error“. This status will be indicated with the flashing energy counter
value for +A (1Hz).
11.5 Additional Functions
This functions are not approved according MID. The values may be used for information and not for
billing purposes.
11.5.1 Demand channel
The demand channel the supports the following demand measurements:
Active import demand of total energy
The meter supports block methods for demand calculation:
The demand interval is programmable for 60, 120, 300, 600, 900 or 1200 seconds.
The demand can be reset by:
No.
Ways of Demand Reset
Description
1
Demand reset by software
Demand can be reset by software through
RS485 interface
There is time limit between two demand reset actions for 30minutes.
When demand reset occurs, the current energy and the maximum demand will be automatically saved
for the last month. The energy of current month will be continuously cumulated, and the demand will
be reset and restart to record.
11.5.2 History data record
There are 20 months history energy and demand data.
All this history data can be read out via Software through RS485 interface.
11.5.3 Instantaneous parameter measurements
The instantaneous values can be be read out via RS485 interface.
● Voltage and current
● Power factor
● Active power
● Frequency
11.5.4 Load profile
Load profile interval is configurable with 1, 2, 5, 10, 15, 30, 60, 120, 300, 600, 900, 1800, 3600
seconds.
Memory capable: 8 channels (the first channel should be time) with together 43200 entries.

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The load profile data are stored with time stamp.
-first channel time stamp
-up to 7 further channel with values selectable according the following list:
value
Active import energy
√
Active import
demand
√
Active import power
√
Voltage
√
Current
√
Power factor
√
Frequency
√
Note: √ means corresponding item with options
/ means corresponding item without options
11.5.5 Second index
The second index is a continously incremented second counter. It is used as time stamp for maximum
demand measurement, all events inside the meter, such as time stamp for power outage, clock
synchronization etc.
11.5.6 Security functions
The register for energy, demand, meter parameter and event records will be saved in non volatile
memory if the power is off.
The meter detects and registers current status and events:
Event logging with date and time:
-power off (last 20 events)
-time synchronisation (last 20 events)
-time asynchron (last 20 entries)