Nvis 7090 MCB and HRC Fuse Testing System

Nvis 7090, MCB and HRC Fuse Testing System is an ideal platform to enhance education, training, skills & development amongs our young minds.

It includes B type MCB, C type MCB and HRC fuse. These are protective devices capable of carrying currents under normal circuit conditions and automatically break the circuit whenever over load or short circuit condition occurs. Nvis 7090 provides complete learning contents to demonstrate the internal working of MCB and HRC fuse.

The MCB are provided in transparent case to visualize the internal architectures. Two precise integrated circuit based Thermometers are provided on bimetal contact of MCB to analyze the temperature rise and fall. Digital timer is provided with start and stop facility to study the current versus tripping time characteristics. Inbuilt isolated variable AC Power Supply is provided for safety. The student will learn the difference in various classes of MCB.

• Features
  

- Alphanumeric 16X2 Big Font LCD for better visibility
- Isolated Power Supply using Transformer
- Inbuilt variable current injection facility
- Transparent MCB`s to understand internal architecture and its working
- Inbuilt Timer, Current & Temperature on LCD
- MCBs are mounted with temperature sensor for current temperature analysis
- Equipped with supply indication lamp
- Designed by considering all the safety standards
- Diagrammatic representation for the ease of connections
- Learning material CD

- Mains Supply: 0 - 220 V AC ±10 %,50 Hz
- Single Phase Variac:
         -- Input: 230 V
         -- Output: 0 - 270 V
         -- Current: 10 A
- Single Phase Transformer:
         -- Rating: 1 kVA
         -- Input: 230 V
         -- Output: 230 V
- Experimental Setup:
         -- MCB’s: B type, 6 A
                         C type, 2 A
         -- HRC Fuse: 6 A
- Temperature Sensor (2 Nos.):
         -- Type: Mounting type
         -- Name: LM35
         -- Display Resolution: 0.1 °C
         -- Mounting: With Brass holder mounted on MCB’s
- Protective Devices: 10 A (SPN)
- Rheostat: 100 / 5 A
- Dimension (mm): W 600 x D 350 x H 450
- Weight: 22 kg (approximate)

- Study the operating characteristics of Miniature Circuit Breaker B - type 6 A. Also draw the Current Time & Temperature - Time characteristics
- Study the operating characteristics of Miniature Circuit Breaker C - type 2 A. Also draw the Current Time & Temperature - Time characteristics
- Study the operating characteristics of HRC fuse