P
Sir,
Being a regular visitor of your site, we look forward to your assistance in the following.
Upon installation of a computer to control an automated nondestructive test system, we have checked the electrical circuits in the building and have observed that the neutral to earth reading is around 8 volts. We have made a new ground pit and grounded the circuit and later found the neutral to earth reading is around 3 volts. Considering the instructions of the control card manufacturers, we have approached the Electricity board for assistance. They have provided an earth to the neutral from the main supply point. This has not changed the reading. Having difficulty in achieving lower reading, we have contacted local suppliers of major online UPS brands. We were told that the online UPS wouldn't solve this problem. Some suppliers mentioned of an "Isolation transformer", but could not come up with any literature (brochure) on this.
We would request your valuable assistance in resolving this issue. We do hope your technical personnel can provide us with answers for the following.
1. Can we eliminate this problem by providing an earth to Neutral? If so, are there any consequences and how this would reflect in the monthly electricity billing?
2. Can the Electricity board do something on their side to lower this voltage?
3. Is there any economical products available for the same purpose?
4. Is it possible to achieve a Neutral to earth reading as low as 250milli volts as required by the card manufacturer?
Thanking you,
Sincerely,
P.K. John
[email protected]
Being a regular visitor of your site, we look forward to your assistance in the following.
Upon installation of a computer to control an automated nondestructive test system, we have checked the electrical circuits in the building and have observed that the neutral to earth reading is around 8 volts. We have made a new ground pit and grounded the circuit and later found the neutral to earth reading is around 3 volts. Considering the instructions of the control card manufacturers, we have approached the Electricity board for assistance. They have provided an earth to the neutral from the main supply point. This has not changed the reading. Having difficulty in achieving lower reading, we have contacted local suppliers of major online UPS brands. We were told that the online UPS wouldn't solve this problem. Some suppliers mentioned of an "Isolation transformer", but could not come up with any literature (brochure) on this.
We would request your valuable assistance in resolving this issue. We do hope your technical personnel can provide us with answers for the following.
1. Can we eliminate this problem by providing an earth to Neutral? If so, are there any consequences and how this would reflect in the monthly electricity billing?
2. Can the Electricity board do something on their side to lower this voltage?
3. Is there any economical products available for the same purpose?
4. Is it possible to achieve a Neutral to earth reading as low as 250milli volts as required by the card manufacturer?
Thanking you,
Sincerely,
P.K. John
[email protected]