Nvis 7094 Earth Fault Relay Testing System

Nvis 7094, Earth Fault Relay Testing System is an ideal platform to enhance education, training, skills & development amongs our young minds.

Nvis 7094 provides complete learning platform related with the connection of Earth Fault Relay in transmission line and testing of Earth Fault Relay. After experimenting with Nvis 7094 the students will be able to use Earth Fault Relay in Power Systems.

There are various types of protective devices used in Power Systems. The knowledge of protective devices helps to use them smartly and avoid system breakdown. Earth leakage current gives rise to heat generation and progressive failure of insulation which leads to earth faults & sparks. The Earth Fault Relay detects the leakage current well before they cross threshold limit.

• Features:

- Inbuilt variable source
- Big font LCD display for better visibility
- Isolation transformer is provided for safe operation
- Exclusive and rugged designed panel
- Designed by considering all the safety precautions
- Diagrammatic representation for the ease of connections
- Learning material CD

- Mains Supply: 230 V ±10 % V AC, 50 Hz
- Variac:
             -- Input: 230 V
             -- Output: 0 - 270 V
             -- Current: 0 - 2 A
- Isolation Transformer:
             -- Rating: 1 kVA
             -- Primary Voltage: 0 - 230 V
             -- Secondary Voltage: 0 - 230 V
- Earth Fault Relay:
             -- Type: Electro - mechanical Inverse Time
             -- Normal Voltage: 110 V AC, 50 Hz
             -- Plug Setting: 0.5 A, 0.75 A, 1.0 A, 1.25 A, 1.50 A,1.75 A and 2 A
- Rheostat: 110 O, 5 A
- Display Measurement Unit:
             -- Design Technology: AVR RISC Microcontroller
             -- Voltmeter: 25 - 300 V
             -- Measurement Method: Direct ADC interface
             -- Display Resolution: 1 V
             -- Ammeter: 0.2 - 5 A
             -- Measurement Method: CT based ADC interface
             -- Display Resolution: 0.01 A
- Timer:
             -- Range: 10 mSec - 30 min
             -- Operation: Automatic with relay start operating
- LCD Specification:
             -- No. of lines: 2
             -- No. of Characters in each line: 16
- MCB: 6 A (SPN)
- Dimensions (mm): W 830 x D 355 x H 630
- Weight: 52 kg (approximate)

- To study and verify the operating characteristics of Earth Fault Relay with different plug setting
- To study connection of Earth Fault Relay in transmission line
- To study testing of Earth Fault Relay