14-15_GHV_c_koleje_en.qxd
6.9.2023
13:39
Page 15
rail transport
50155, as well as the fire protection of railway vehicles according to ČSN EN 45545-2 and can also be used to ensure the safety of machinery according to ČSN EN 60204-1.
The devices meet the requirements of EMC tests according to
EN 50121-3-2 and EN 61326-2-4 and the limitation of hazardous substances according to EN 50581.
For all devices, data can be read using Modbus/RTU.
For applications where non-sinusoidal voltages in the DC to
15 Hz frequency range can also be expected, we recommend
using the top of the range isoRW685.
This range of devices allows connection and display of data via
a web browser, as well as the ability to set individual alarm parameters or read data via a Modbus/TCP interface.
COMPONENTS FOR SWITCHBOARDS
MEASURING TECHNOLOGY
Automatic network switches
Panel measuring instruments
Instrument current transformers
Grid analyzers
Sidewalls and electricity meters
For more information, please contact our company staff
GHV Trading
Phone: +420 541 235 532
ghv@ghvtrading.cz,
www.ghvtrading.cz
Transducers of electrical quantities
...isolation watchdogs
www.ghvtrading.cz / www.ghvtrading.sk
GHV Trading, spol. s r. o., Edisonova 3, 612 00 Brno
(CZ) +420 541 235 532-4
(SK) +421 255 640 293
...localization of insulation fault
Device name
Function
Network monitoring
scope Un
Supply voltage Us
Range of leakage capacity
isoRW425
AC 0–440 V
DC 0–440 V
DC 16,8–276 V
AC 70–276 V
300 µF
isoHV425W + AGH422W
AC 0–1 000 V
DC 0–1 000 V
DC 16,8–276 V
AC 70–276 V
150 µF
isoRW685
AC 0–690 V
DC 0–1 000 V
including AGH to
1,76 kV DC and 12kV AC
AC/DC 16,8–276 V
1 000 µF
Operating temperature range °C
–40 to 70 °C
–40 to 70 °C
–40 to 70 °C
Output
2× contact
Modbus RTU
2× contact
Modbus RTU or
0–10 V, 0(4)–20 mA
2× contact
Modbus RTU
Modbus TCP
Insulation measurement range
Response values
Standards
0–4 MΩ
0–10 MΩ
0–20 MΩ
1 k–990 kΩ
10 k–500 kΩ
1 k–10 MΩ
ČSN EN 45545-2
ČSN EN 50155
ČSN EN 45545-2
ČSN EN 50155
ČSN EN 45545-2
ČSN EN 50155
www.technikaatrh.cz
15