Modular Power Meter
Modular power meter version 1.0 Page 11 / 40
5.4.
Interconnection or meter bus cables
Here standard Ethernet patch cables can be used, be aware that the cable contains 8 cores.
These cables are available in all lengths and colors on the market.
Note: Cables for industrial ethernet often have only 2 pairs of wires.
Warning: do not plug the RJ45 jack into a computer or ethernet switch, the 24V can damage
the 1G-bit channel.
5.5.
Volt1000
The voltage sensor has the following properties:
- measure 3-phase voltage +N (connection for 3 phases and neutral wire);
- modbus interface.
- Two RJ45 sockets for chaining, standard Ethernet cables can be used.
- DIN-rail-TS35 mounting + magnet to fix it on an iron plate.
- CAT4.
- 2 meter long wires to connect with L1, L2, L3 and N.
- high creeping and clearance distance 15mm, not only for inputs to GND but also
between phases.
- 1000V rms fix input range.
- 300V, 200V, 140V auto range for L1 - N, L2 - N, L3 – N.
- 300V, 200V, 100V, 63V, 32V auto range between N and GND (if the 0V pin is earthed
in the MODBUS master).
- 10M-Ohm input impedance, 5kV, 15mm creeping distance.
- graphical 128x64 pixel OLED display with touch interface, this shows the
measurements of the whole chain and can be used to set-up the system.
Note: The OLED works only with a power supply of more than 14 Volts.
- 24V, power consumption: 15mA (30mA with OLED display on) + n x 15mA to feed n
current modules.
Figure 5-8 Volt1000 Module
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