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28 305 515 - 1
M-bus three-phase meter for use with CT
DSZ15WDM-3x5A with display and MID approval
Only skilled electricians may install this electrical equipment
otherwise there is the risk of fire or electric shock!
Temperature at mounting location: -25°C up to +55°C.
Storage temperature: -25°C up to +70°C.
Relative humidity: annual average value <75%.
CT operated energy meter with settable CT ratio and MID.
Maximum current 3x5A. Standby loss 0.5 watt per path only.
Modular device for DIN-EN 60715 TH35 rail mounting.
4 modules = 70mm wide and 58mm deep.
Accuracy class B (1%). With M-bus interface.
This three-phase meter measures active energy by means of the currents
flowing between inputs and outputs. The internal power consumption of
0.5 watt active power per path is neither metered nor indicated.
1, 2 or 3 converters with secondary currents of up to 5 A can be connected.
The inrush current is1OmA. The N terminal must always be connected.
The 7 segment LC display is also legible twice within a period of 2 weeks
without power supply.
Power consumption is indicated by an LED flashing at a rate of 10 times per KWh.
On the right next to the display are the MODE and SELECT buttons to browse
through the menu. First the background lighting switches on. Then the total
active energy, the active energy of the resettable memory and the instantaneous
values of power, voltage and current are displayed for each outer conductor.
The CT ratio can also be set. It is set to 5:5 at the factory and blocked with a
bridge over the terminals which are marked with 'JUMPER'. To adjust the CT
ratio to the installed transformer remove the bridge and reset the energy
meter according to the operation manual.
Adjustable current transformer ratios: 5:5, 50:5, 100:5,
250:5, 300:5, 400:5, 500:5, 600:5, 750:5, 1000:5, 1250:5 and 1500:5.
Error message (false)
If there is no outer conductor of the current direction is incorrect, 'false' and
the related outer conductor are indicated in the display.
M-bus data transfer
■
On read-out all values are transferred in a telegram.
■
The following telegrams are supported:
- Initialisation: SND_NKE Reply: ACK
- Read out meter: REQ_UD2 Reply: RSP_UD
- Change primary address: SND_UD Reply: ACK
- Reset RS1: SND_UD Reply: ACK
- Slave selection for the secondary address Reply: ACK
■
The device does not reply to unknown requests
■
The transfer rate is detected automatically
■
The device has a voltage monitor. In case of voltage loss,
all registers are saved in the EEPROM.
Changing the M-bus primary address:
To change the M-bus primary address, hold down SELECT for 3 s. In the menu
that appears, press MODE to increment the address by 10. Press SELECT to
increment by 1. When the required primary address is set, wait until the main
menu reappears.
Secondary address:
■
It is possible to communicate with the energy meter according to the
standard EN13757 with help of the secondary address.
■
The use of wildcards is possible.
Detailed information are available in the operating manuals at www.eltako.com
Important! Before working on the current transformers disconnect the voltage
paths of the energy meters.
Typical connection:
4-wire-connection 3x230/400V
The secondary current converter terminals on the mains side must be
connected to the outer conductors measured. These connections for the
meter power supply must be protected according to local installation
regulations.
Then block it again with the bridge.
150:5, 200:5,
Typical connection:
4-wire-connection 3x230/400V
The secondary current converter terminals on the mains side must be
connected to the outer conductors measured. These connections for the
meter power supply must be protected according to local installation
regulations.
Technical data
Rated voltage, extended range 3x230/400V, 50Hz,
-2O%/+15%
Reference current I
(Limiting current I
ref
) 3x0.05 - 5(6)A
max
Internal consumption active power 0.5W per path
Display LC display 7 digits,
Technical data
Rated voltage, extended range 3x230/400V, 50Hz,
-2O%/+15%
Reference current I
(Limiting current I
ref
) 3x0.05 - 5(6)A
max
Internal consumption active power 0.5W per path
Display LC display 7 digits,
therefrom 1 digit after the decimal point
Accuracy class ±1% B
Inrush current according to accuracy class B 1OmA
Operating temperature -25/+55°C
Bus system M-Bus
Bus length According to M-bus specifications
Transfer rates 300, 2400, 9600 baud.
Response time Write up to 60ms
(system response time) Read up to 60ms
Terminal cover sealable Terminal cover claps
Protection degree lP50 for mounting in distribution cabines
with protection class IP51
Maximum conductor cross section
1)
N and L terminals 16mm2,
M-Bus terminals and jumper terminals 6mm
Recommended torque
2)
L- and N terminals 1,5Nm (max. 2,0Nm)
M-Bus terminals and jumper terminals 0,8Nm (max. 1,2Nm)
EC type examination certificate 0120/SGS0314
The energy meter is used indoors.
Mechanical environmental conditions class M1
Electromagnetic environmental conditions class E2
1)
The carrying capacity of cables and wires is defined in DIN VDE 0298-4.
2)
The torques for screw terminals are mentioned in DIN EN 60999-1.
To avoid damages at the energy meter, the recommended torque values for each terminal
must not be exceeded!
2
Menu guidance
Must be kept for later use!
We recommend the housing for operating instructions GBA12.
Eltako GmbH
D-70736 Fellbach
Technical Support English:
+49 711 94350025
technical-support@eltako.de
eltako.com
23/2020 Subject to change without notice.
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