Computer Interface Numerical Percentage Biased Differential Relay Trainer, Model Name/Number: TS-DIFF3-PC

NUMERICAL PERCENTAGE BIASED DIFFERENTIAL RELAY TRAINER - with pc interface

Single/Three -phase Numerical Transformer Protection Relay

- With one number of Single/ Three-phase numerical transformer protection relay

- With Resistive load

- Based on DSP Based Digital Algorithms

- With minimum Trip Time - 30ms

- Password protected

- 20x4 LCD Display

- Power system frequency 50Hz

- Field Configurable CT Secondary 1A or 5A

- Configurable to Dual Slope Characteristic

- Be able to demonstrate Transformer Differential Protection (ANSI CODE: 87)

- With 2 number of output contacts

- Capable to store history of last 20 Events

- Capable to store disturbance record of last 10 Events

- Configurable to Pre and Post Fault Cycles

- With communication Port: Front-RS232 and Rear-RS485

- With communication Protocol: Modbus

- With draw-out facility with inbuilt CT shorting

Technical specifications:

The relay test bench having

• The relay test bench is provided with Software for oscillographic harmonic recording up to max 1200 cycles and programmable Pre fault and Post fault cycles.

• The oscillographic records can be transferred to PC via USB in COMTRADE format.

• Have sturdy enclosure with colorful overlays showing circuit diagrams and its connections for easy understanding of students.

• Detailed manual with theory and practical guidance with tables and charts

1. SINGLE PHASE TRANSFORMER:

- One Number of Single-phase with rating: 200VA, 230/48 V Stepdown transformer is to be provided,

- One Number of Single-phase with rating: 200VA, 24-0-24/ 24-0-24 Open type transformer is to be provided.

2. CONTROL PANEL:

- Digital voltmeter and ammeters in the primary and secondary sides

- Suitable fault resistances.

Capable of studying the various protection schemes of:

1. Three phase transformer.

2. Single Phase Transformer.

Detailed manual with theory and practical guidance with tables and charts