Van De Graaff Generator Large 400 KV Variable Speed (New) Manufacturer,Supplier and Exporter in India
Product Code : EL-PS-10538
Quick Answer: The Van De Graaff Generator Large 400 KV Variable Speed is a 250 mm Van De Graaff generator with an output of 400 kV under good conditions, a speed-controlled DC motor drive and all parts fully exposed for classroom use. Its height is 800 mm.
Last updated: October 2026
Key Features
- Main ball 250 mm, with all parts fully exposed for classroom use
- Output 400 kV under good conditions, with an approximate 15 cm spark gap
- Belt driven from a speed-controlled DC electric motor
- Charging belt of silicone rubber, 55 mm wide
- Discharge ball 80 mm diameter with insulated handle and earth terminal connection
- Supplied with earth cable, spare charging belt and spare motor drive belt
Technical Specifications
| Specification | Value |
|---|---|
| Main ball | 250 mm |
| Height | 800 mm |
| Output | 400 kV under good conditions |
| Spark gap | Approx. 15 cm |
| Discharge ball | 80 mm diameter, with insulated handle and earth terminal connection |
| Charging belt | 55 mm wide silicone rubber |
| Drive | Belt driven from a speed-controlled DC electric motor |
| Supplied with | Earth cable, spare charging belt, spare motor drive belt |
About This Product
Van de Graaff generators build up static charge on a hollow metal sphere. A moving belt carries charge to the sphere, and the voltage rises until a spark jumps to a nearby discharge ball. In class they are used to show electrostatic charge, repulsion, sparks and discharge, and why earthing matters. A speed-controlled motor lets the teacher change how quickly the charge builds. Use the generator under teacher supervision and connect the earth cable as instructed.
Frequently Asked Questions
Q1. What output does the Van De Graaff Generator give?
The output is 400 kV under good conditions, with an approximate 15 cm spark gap.
Q2. What is supplied with it?
It is supplied with an earth cable, a spare charging belt and a spare motor drive belt.
Q3. What are its main dimensions?
The main ball is 250 mm, the discharge ball is 80 mm in diameter and the height is 800 mm.
Related: Physical Sciences, Low Voltage Bulb Demonstration, Electronic Project Kit (14 in 1), Alligator Clips (4 mm).
For a quotation on the Van De Graaff Generator Large 400 KV Variable Speed, contact School Lab Equipment India.