Thermal Shock Test Facility
Thermal Shock Test Facility  

Electronics & Radar Development Establishment (LRDE), Bangalore, has installed a state-of-the-art Thermal Shock Test Facility. It consists of three modules of 1 x 1 x 1 m called the Hot Chamber, Ambient Chamber, and Cold Chamber. The thermal shock test is required to determine whether a system, material or component can withstand the rapid change of temperature in the surrounding atmosphere without experiencing any physical damage and deterioration in the performance.

In the Hot Chamber, temperature can be maintained from 0C to 200C with temperature gradient of 20C/minute, while in the Cold Chamber, temperature can be maintained from -70C to 100C with the temperature gradient of 10C/minute. The Cold Chamber can also be used for temperature cycling test with temperature gradient of more than 5C/ minute, and high or low temperature test.

The movement of the equipment/material between the chambers is controlled by hydraulic mechanism with a 250 kg loading capacity platform.

High Voltage Test Facility

High Voltage Test Facility

LRDE, Bangalore, has recently installed a High Voltage Test Facility. It is a variable voltage power supply with DC voltage range from 0to120 KV and current upto 1mA. The specifications of the system are:

Output voltage : 0-120 KV DC
Output current : 1 mA
Polarity : With +ve ground
Metering : Digital 3 1/2 digit panel meter for Kilo Volt meter
0-1 mA current meter
Leakage current :  Less than 10 mA at 100 KV DC
Protection : Overload/short circuit protected

he test set-up is used for testing low power high voltage assemblies, HV cables, capacitors, TWTs, klystrons, magnetrons, backward oscillators, transformers, chokes, insulators, etc.

Driving Rain Test Facility

Driving Rain Test Facility

LRDE, Bangalore, has installed a Driving Rain Test Facility. This test is required to determine the suitability of electronic and electrical equipment for use in harsh environmental conditions like heavy rains.

The test facility consists of a rain chamber measuring 10' x 10' x 10'. It has 8 nozzles (four horizontal nozzles and four nozzles inclined at 45) and a moving platform at the centre of the chamber on which an equipment weighing upto 250 kg can be kept. The water flow pressure can be maintained from 0 to 200 kPa.