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PSW300
PSW300 series of intelligent power distribution terminal (DTU)
Summary
PSW300 series intelligent power distribution terminal (DTU) is the latest development of the company's new generation watchdog controller according to integrated domestic and foreign advanced technology, the actual demand of the power distribution area. The equipment is installed on the responsibility boundary point of 10kV overhead distribution line, which can achieve to automatically remove single phase to earth fault and isolate phase short circuit fault.
The controller and the switch body through the control cable and the aviation connector are electrically connected to achieve the protection and automatic monitoring function. The product is used in 10kV overhead distribution line, which can greatly reduce the failure of the fault line of the accident power, narrow the scope of the fault, shorten the time of the user, so as to improve the reliability of the power supply.
Product features
· Modular design: CPU board, power board, AC sampling model, open the board and other functional modules, can be flexibly configured according to the specific situation;
· Multi CPU architecture: the use of a number of 32 bit low power embedded CPU architecture, can simultaneously control the multi-channel switch, the CPU independent operation, stable and reliable;
· The use of electric power automation system embedded software platform design, flexible expansion of application;
· Device using zero sequence power direction criterion, can accurately judge the single-phase grounding fault inside and outside the world.
· The device can be applied to the ground system of neutral point, small resistance grounding and arc suppression coil grounding system. Device can be connected with a resistor divider voltage sensor or voltage transformer, and internal circuit of which is insulated voltage signal. The device, using standard 3U aluminum alloy chassis easy to install, has excellent ability to resist electromagnetic interference;
· With battery management function. To prevent battery over charge, over discharge, improve battery life.
· Controller with data communication function can be achieved the background of data exchange through the GPRS data communication module.
Main functions
· Measurement: three-phase voltage, current, zero sequence voltage, current, 16-48 remote signaling, 26 remote signaling.
· Protection function: single phase earth(with zero sequence direction) protection,interphase short circuit protection ,over current protection, over and under voltage protection,acceleration reclosure brake.
· Automation functions: reclosing, incident record, communication.
Boundary switch fault action principle
Fault type |
System mode |
Switch type |
|||
Circuit breaker |
Load switch |
||||
Single phase earth fault |
The neutral point not grounded or grounded in the arc suppression coil |
In of bounds |
Out of bounds |
In of bounds |
Out of bounds |
Automatic tripping |
No action |
Automatic tripping |
No action |
||
Small resistance grounding system |
Prior to substation protection |
No action |
Prior to substation protection |
No action |
|
Phase short-circuit fault |
Automatic tripping |
No action |
Cooperate with superior protection, delay action |
No action |
|
Technical data
Rated current |
1A or 5A； |
Rated voltage |
PT input 100V or sensor input； |
Protection error |
The error of current setting value is no more than ±3% (or 0.02In), and the error is not more than ±3%. |
Return coefficient |
Lower than 0.95 |
Switching pulse width tuning range |
0.1s~9.9s，Integer differential 0.01s， |
Tripping export contact capacity |
AC250V/5A. |
Working power source |
AC85V-265V，Power consumption≯5W。 |
Normal operating temperature range |
-25~+60℃ |
Storage and transportation temperature |
-55~+85℃ |
Relative humidity |
≯95% |
Device size |
4- way switch 360.5*128.7*190 (length * width * depth) |
Terminal definition
Dimension chart
To control the 4 way switch as an example, the maximum can be extended to control the 6 switches
Hyliton Power Technology is one of the largest and experienced manufacturers and suppliers of high-tech products in China who can offer you advanced and high quality distribution automation data transfer units OEM at competitive price. Welcome to order our CE distribution automation data transfer units made in China.
