SDV – Smart Device Expert Voltage Regulation and On Load TAP Changer Monitor

Treetech’s innovation over many years has perfected voltage regulation.  The SDV Smart  Device goes far beyond a traditional  voltage  regulator  because  it allows intelligent voltage  regulation  that  is optimized  through  Artificial Intelligence  techniques  that use load curves, thereby producing better energy quality and fewer losses.

The On Load Tap Charger’s maintenance management functions also optimize and reduce maintenance costs, which can be maximized if connected to thermal monitoring such as Treetech’s SDT Smart   Device that identifies temperature differences.

Many of its attributes are patent pending in Brazil and abroad.  The sensor is the most complete and efficient solution available on the market, and features:

• Optimized voltage  regulation  using  Artificial Intelligence  techniques;
• Multiple adjustments  of regulating  parameters  available  for the user, activated through time, week and day programming  or remote command;
• Switch maintenance  wizard using number of operations and integration  of interrupted current; prediction of time remaining  for next maintenance period and pre-programmable maintenance warning;
• Colour display for intuitive information status view and graphing of the status history. Options for touch-screen  or joystick interface;
• Embedded web pages  for remote view of online measurements  and consultation  of historical graphs,  as well as password controlled setting of equipment parameters;
• History of measurements and alarms in embedded SQL database,  facilitating storage and safe and efficient access to data,  plus complete integration with remote online monitoring systems;
• Non-volatile Gigabyte mass memory expandable to 32 Gigabytes.  Low maintenance internal clock without batteries;
• USB port for connecting laptop or memory stick for downloading  data;
• Two optical fibre or RJ45 Ethernet  ports with F.O. serial option;
• Wireless communication  through Wi-Fi or GPRS modem;
• One RS485 port and a programmable RS232/RS485.
• Clock synchronism through IRIG-B;
• Open protocols: Serial IEC61850, DNP3.0 and Modbus RTU or through TCP/IP, FTP for remote  access  to files and databases and SMTP for sending alarm e-mails;
• Current measurements  with clip-on window CTs, increasing safety for installation and maintenance personnel;
• Independent actuation  times for increasing and decreasing voltage with linear and stepped linear timer modes or inverted curve;
• Local and remote tap position indication;
• Local/Remote and Manual/Automatic  switch command; parallel control between transformers;
• Automatic triggered switch blocking;
• Robust design exceeds EMC standards forsubstation operation under severe electromagnetic conditions.
• Operating temperature  -40  to 85ºC;
• Universal voltage supply, from 38 to 265 Vdc or Vac;
• Compact dimensions saves space and reduces control panel costs.