PSW101 universal CT powered protection device

Summary

PSW101 universal CT powered protection device is a 10KV feeder protection device which has the function of over current, fast breaking protection and grounding protection according to the use of domestic users. With the use of standard current transformer, power supply is obtained by CT from the current line. Current quick-break protection, over current protection and grounding protection can be realized by driving the tripping coil so as to achieve low power without auxiliary power supply. The device, which not only saves the cost of the manufacturer, but also increases the stability of the system, solves the problem of the life of the conventional power supply battery so as to achieve the maintenance free. 

PSW101 especially suitable for medium voltage power distribution system breaker cabinet and boundary load switch, constitutes a protection system with the special standard current transformer and trip coil (24 v). Safe and reliable, life can be up to 25 years.

Features

· Using the CT powered technology, no external power supply, low cost, long period of maintenance- free;

· Support the definite-time of over current protection, fast break protection, earth protection and inverse-time over current protection, the setting of protection value is flexible;

· With zero sequence current sampling terminal, the zero sequence current transformer can be connected, and judgment of single phase to ground fault is more accurate;

· With USB port, can update the program through USB port;

· Adjusting all constant value by DIP switch or PDA hand held terminal;

· With the gateway interface and gateway interface, easy to trip and confirm of the emergency;

· With emergency tripping from distant AC220V.

· Can set the parameters directly, the operation is simple.

Technical data

Parameter tuning table

Setting of the time constant value of the zero sequence protection and the setting of the anti 

time limit acceleration factor

When the protection characteristics of the device are time limited (the specific setting method 5.1.7), the state of the third set of the code switch determines the time setting value of the over current and zero sequence protection, the value can be expressed as: I>= (DIP set +1) x50ms. Among them, the DIP set value depends on the value of the 8 bit binary code corresponding to the bit binary code corresponding to the code switching state. Setting range of protection time is 50ms~12.8S.

When the protection characteristics of the device are the inverse time protection, the state of the third sets of the code switch determines the size of the inverse time acceleration factor A, the value can be expressed as: a= (DIP set +1) x0.05. Acceleration factor setting range is 0.05~12.8.

Protection time characteristic curve

The time limit for the protection of the device is set by the 1-3 bit of the fourth set of code, which can set the time limit and the time limit of 7 kinds of anti time limit. The relationship between the protection of the time limit characteristic curve and the code is shown in the following diagram:

Other settings

Through fourth sets of 4-6 bits, can be set up to protect the function of flow protection, quick break protection function and zero sequence protection function, when the code is in the OFF position, the corresponding protection function, when the code is in the ON position, the corresponding protection function to exit. The seven dial setting of zero sequence current is calculated, when dial switch in the off position, zero sequence current by three-phase current synthesis, when dial switch is in the on position, zero sequence current input provided directly by the zero sequence current transformer (ratio of 100 / 1). The 8-bit dial setting depending in the access phase sequence current transformer turns ratio selection, when the current transformation ratio of 1000:1, need the dial switch to the off position; when the current transformation ratio of 200:1, need the dial switch is placed in the on position. You dial the above definition is shown

Wiring diagram

Strictly prohibit:S1, S2 terminal, S3 (C), S4 (D) terminal is short.

Device structure

The device is made of flame retardant plastic shell, which is cast in epoxy resin, and the protection is not influenced by external environment.

Device size：168*123*41; Fixed hole ：3*Φ7

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 ct powered feeder protection device OEM at competitive price. Welcome to order our CE ct powered feeder protection device made in China.

Download the specifications of PSW101 universal CT powered protection device Transformers

PSW100 Download.pdf