I can offer no suggestions without the over all context for the function. And some circuit documentation.

I don't believe that you understand the actual problem. But I don't know for sure, because I have no details.

Do you understand what switching frequency means? And can you please state what the relay switching frequency is going to be?

A mechanical relay has a switching frequency limit for various reasons. If you are driving it faster than that limit.....contact arcing is of little concern.

Also the type of load that you are switching makes a big difference too.

ALL the details matter.

YES... It is under max switching frequency. Because RELAY will only ON when i/p voltage exceeds some voltage level .
About the load, I have connected 1 KW heater to it.

 

Assuming everything is within spec., the easiest thing to do is try a series RC network. This network can be across the relay switch or across the load. There is a difference. There are formulas for finding the values and power ratings of the network components.

Search for "relay arc suppression"......for explanations and examples.

 

YES... It is under max switching frequency. Because RELAY will only ON when i/p voltage exceeds some voltage level .
About the load, I have connected 1 KW heater to it.

None of which has anything to do with contact arcing.

 

The only way to reduce contact arcing is to use a snubber across the contacts (or possibly the load).

 

Hello ,AAC Community
I am working on Automatic voltage Controller Project the major issue i am getting is how to reduce sparking at high voltages. I have tried using zero crossover but nothing happens.Hardware is Correct , the thing is how to reduce arching using programming by adding delay. In relay datasheet , its
operating time is 15 ms and release time is 10 ms . Help me to solve this issue......

The Normally Open Relay Contact will CLOSE, some variable time between 0 ms and 15 ms AFTER the relay coil is energized.
The Normally Open Relay Contact will OPEN, some variable time between 0 ms and 10 ms AFTER the coil is de-energize.

Are you controlling the voltage on the Relay Coil and then expecting the Contacts to Open / Close exactly on a Zero Voltage Crossing?