Overview

1.1 Main uses and programs

PS640UX Series Comprehensive Protection Relay is applicable to line, transformer, capacitor and bus coupler protection,measuring and control which is mainly for protection of 35KV and below. The device provides
communication interfaces and can be installed in switchgear dispersedly, it can also be installed in
cabinet in group. The device can compose the automation system with other protections and
automation devices through self-equipped communication interfaces. 

1.2 Technical Features

²Measuring three-phase current and zero-sequence current (Ia, Ib, Ic, I0), three-phase or line voltage (Uan, Ubn, Ucn, Uab, Ubc, Uca), active power P, reactive power Q, power factor cosφ, frequency f, meritorious electricity kWh, reactive power kVarh.

²The measured values of current, voltage, power, and electrical degrees not only reflect the fundamental wave, but also correctly reflect the 2~13th harmonic, and the frequency is 45~60HZ adaptive, so that the measurement results are consistent with the special measuring meter. 

²Up to 15-channel DI, users can customize the name.

²Way to protect the export of components through the tripping matrix setting, the convenience of users to select the relay action. Contact may choose to export all the relays for tripping contact (automatic return) or signal contact (after reversion back).

²Independent operating circuit which can adapt to the 0.5A~5A switch tripping and closing current, and the operating circuit is universal for AC and DC.

²GPS time synchronization can adopt the network time synchronization method, and also supports the B code time synchronization method (RS485 interface) and the SNTP method.

²Differential protection to prevent equipment to start or outside the failure resulting in differential protection saturated TA maloperation criterion.

²Valid and reliable criterion disconnected TV effectively prevent low-voltage electrical components malfunction.

²Two 100M Ethernet communication interface, one RS485 communication interface, support the IEC61850, IEC60870-5-103, Modbus and other protocols.

²16 recorders, the largest recorded wave volume contains the 13-channel analog (interval 1mS). Wave was recorded using standard Comtrade format.

²The full graphical programming technology, as well as stable and reliable protection relay library, improve reliability and correctness of the procedure.

²Machine static low power consumption (about 6W), LCD module using the new technology, life expectancy increased substantially.

²High anti-interference performance, by 10 Electromagnetic Compatibility Testing & Certification, fast transients, electrostatic discharge, surge anti-interference performance are the highest grade (Ⅳ grade) standard.

²Working ambient temperature range: -25 ℃ ~ +55 ℃ (liquid crystal non-fuzzy, slow phenomenon)

PSL 641UX Feeder  Protection  and  Control Device

PSL641UX Main protection functions