PAC-T100: Transformer protection

 Multifunction relay provides protection, control and monitoring function.

PAC-T100 is multifunction relay that have all protection, control and monitoring function. This relay is equipped instantaneous/percent differential, phase/ground (neutral)/negative sequence overcurrent to maximum three by winding, overexcitation, protection element of single phase overvoltage/undervoltage and is applicable to motor/generator winding protection as well as two/three winding transformer.

PAC-T100 has various measure and monitoring function such as quantity of electricity measure, self-diagnosis, and trip circuit supervision(TCS).

PAC-T100 has setting groups for four protection, and change and apply setting group according to system driving condition change and enables optimum protection.

This relay can be various and designs economically trip logic, inter-lock sequence and lock-out function without external addition logic or connection by programmable logic(Easy-Logic).

Event and waveform recording function of PAC-T100 offer driving history of necessary data and device to fault analysis.

PAC-T100 has event and waveform recording data that is stored even if control power is lost. Stored recording can analyze in PC after upload using front communication port in integration PC program (PACManager^TM).

PAC-T100 has 8 basis LEDs and 8 user setting LEDs, and offers convenient menu-tree through graphic LCD, and relay and circuit breaker can be controlled by keypad.

There is one RS-232 port that front of PAC-T100 can do in communication with PC program (PACManager^TM), and are two RS-232 ports that rear of PAC-F100 can do connection with remote monitoring system.

This relay provides ModBus, DNP3.0 and IEC 60870-5-103 protocol for communication with remote monitoring system.

Features

- Digital transformer protective relay that use two processors

- Use possibility for two-windings or three-winding transformer protection

- Four protection element setting groups

- Eleven protection elements - HOCR, PHS DIFF, OCR, OCGR, NSOCR, GND DIFF, OVR, UVR, CBF,

V/Hz, COLD LD, INRUSH

- Various TC curve - IEC standard, ANSI standard, KEPCO induction type, P&C curve

- Control of CB open/close on local and remote mode

- Quantity of electricity measuring function - Three-winding three-phase current, Single phase

voltage, Three-winding sequence current, Differential current by a phase(Fundamental wave,

Second harmonic wave, Fifth harmonic wave), Restrain current, Compensation current,

Magnification by winding, Reference winding, Frequency

- 1024 event recording and maximum eight fault waveform recording (32 samples/cycles)

- Engineering tool - Setting change, Event inquiry, Fault waveform analysis

- Graphic LCD (240 ´ 128, 16line ´ 30character) - Single line diagram, tree structure menu, 16

LEDs, 11 Keypad button

- Communication port - Front interface RS232 port 1 (ModBus Protocol - Setting change,

Event/Fault waveform transmission, measuring monitor), Rear interface RS485 port 2 (SCADA

communication, DNP3.0/ModBus/IEC60870- 5-103 protocol)

- Self-diagnosis function - DC power supply, Memory, CPU, Setting range, DSP, A/D converter,

Analog input circuit, inside logic element and digital input/output circuit

- Trip circuit (TCS) monitoring function

- Eight user setting LEDs

- Panel design easiness in sequence logic structure through EasyLogic Editor

- Test function - Output relay and front display department

- Software upgrade easiness by flash memory use

- Flexible control source (option - AC 110 ~ 240 V, DC 19 ~ 130 V)

- Access Security by password for settings and CB control