
The DEWE-838-PNA is the smallest instrument in a wide range of Power network Analyzers (PNA) and Power Fault recorders (PFR) from DEWETRON. It is designed for plain PQ monitoring in transformer stations or on counter panels and can be implemented in global Power Monitoring Systems (PMT).
- Voltage, Power and Wind testing models available
- 10 kS/s/ch sample rate
- Small and inexpensive, with big performance
- Easy cabinet / rack mounting
- Web interface and data reporting
- Local storage on USB stick when network is not connected
- Database software included
The DEWE-838-PNA-V (voltage only) can calculate all relevant parameters like RMS of the voltage, harmonics, flicker, asymmetry and frequency. The relevant standards, especially IEC 61000-4-30 class A are supported and highly accurate voltage inputs allow accuracies < 0.1 % on the fundamental.
The DEWE 838-PNA-P (Power Version) combines all functions of the voltage version with a full equipped power meter. Active power, reactive power, power factor and many other parameters can be monitored with this instrument on four voltage and four current channels.
The third model is the DEWE-838-PNA-W adds more inputs for WIND SPEED and WIND DIRECTION sensors, which makes it ideal for wind turbine applications.
The DEWE 838-PNA-P (Power Version) combines all functions of the voltage version with a full equipped power meter. Active power, reactive power, power factor and many other parameters can be monitored with this instrument on four voltage and four current channels.
The third model is the DEWE-838-PNA-W adds more inputs for WIND SPEED and WIND DIRECTION sensors, which makes it ideal for wind turbine applications.
Top Applications
- Energy test - power network analysis, power fault recording, wind turbines
- Industry test - facility power system test

Rugged DIN mounting design

USB backup flash media

Network time server (NTP) time sync

Made for installation in cabinets and inside equipment panels, from rugged ABS. DIN RAIL mountable.
An internal USB stick buffers your data for weeks, protecting you against loss of network connection
The DEWE-838 series can be synced to a network time server, ensuring that the data are properly time aligned.
DEWE-838-PNA-V

- 3 voltage inputs
- Extremely compact and robust
- Easily mountable - can be mounted on wall or pole
- Internet/WEB page data push
DEWE-838-PNA-W

- 3 voltage, 3 current, wind speed and direction
- Extremely compact and robust
- Easily mountable
- Internet/WEB page data push
DEWE-838-PNA-P

- 4 voltage and 4 current inputs
- Extremely compact and robust
- Easily mountable - can be mounted on wall or pole
- Internet/WEB page data push
Computer specs:
Linux kernel inside with HTML interface
2 GB flash media for data backup
1x USB, 2x Ethernet, 1x RS-232
Power Specs:
Direct 10 to 36 VDC
Includes AC/DC adapter, input 95 ~ 260 VAC 50 / 60Hz
Software specifications:
Data are streamed out via ethernet interface to your network
Includes PMT software for your SQL server
Linux kernel inside with HTML interface
2 GB flash media for data backup
1x USB, 2x Ethernet, 1x RS-232
Power Specs:
Direct 10 to 36 VDC
Includes AC/DC adapter, input 95 ~ 260 VAC 50 / 60Hz
Software specifications:
Data are streamed out via ethernet interface to your network
Includes PMT software for your SQL server
Accessories included:
AC/DC adapter and cables
Printed manual
Mechanical Specs
160 x 166 x 125 mm (6.2 x 6.5 x 4.9 in.)
Typ. 2 kg (4.4 lb.)
Housing:
Counter panel mount chassis
Wall mount
DIN rail
Environmental Specs
Temp: 0 ~ +50 °C
Humidity: 95% non cond., @ 60°C
AC/DC adapter and cables
Printed manual
Mechanical Specs
160 x 166 x 125 mm (6.2 x 6.5 x 4.9 in.)
Typ. 2 kg (4.4 lb.)
Housing:
Counter panel mount chassis
Wall mount
DIN rail
Environmental Specs
Temp: 0 ~ +50 °C
Humidity: 95% non cond., @ 60°C
Analog input specs
Voltage inputs: ± 1400 V peak
10 kS/s max sample rate @ 16-bit resolution
Safety specifications:
Safety test: IEC -61010-1
ESD: IEC 61000-4-2: 8 kV contact; 15 kV air
EMC: EN 55011: Class A
Power, surge: IEC 61000-4-5: 4 kV
Power, burst: IEC 61000-4-4: 4 kV; L, N, PE
Voltage, surge: IEC 61000-4-5: 4 kV
Voltage, burst: IEC 61000-4-4: 4 kV
Current, surge: IEC 61000-4-5: 4 kV
Current, burst: IEC 61000-4-4: 4 kV
Voltage inputs: ± 1400 V peak
10 kS/s max sample rate @ 16-bit resolution
Safety specifications:
Safety test: IEC -61010-1
ESD: IEC 61000-4-2: 8 kV contact; 15 kV air
EMC: EN 55011: Class A
Power, surge: IEC 61000-4-5: 4 kV
Power, burst: IEC 61000-4-4: 4 kV; L, N, PE
Voltage, surge: IEC 61000-4-5: 4 kV
Voltage, burst: IEC 61000-4-4: 4 kV
Current, surge: IEC 61000-4-5: 4 kV
Current, burst: IEC 61000-4-4: 4 kV
The DEWE-838 features a WEB INTERFACE that provides complete control over how the system is setup, as well as on-line, real time monitoring of the power data that it is measuring. Simply connect a computer via ethernet and log in to the IP address of the system. You can create USER accounts in addition to the ADMIN account. Each one requires a password to log in. Only the administrator can make changes to system operations.








DEWE-838 Resources
There are a variety of things that you can download here, including the PDF product brochure and manual.
There are a variety of things that you can download here, including the PDF product brochure and manual.



