Voltage Regulators and Stabilisers – A comparison between Solid State and Servo Leave a comment

An ideal solution would be a fit & forget solution. One that requires no maintenance and no human intervention once installed. It should be an extension of your normal electrical infrastructure.

fit & forget solution
Not 

Servo stabilizers are very old technology. By the inherent nature of their design, they provide fine output control. Their output accuracy is often as tight as 0.5% but is this essential? No! Most electrical utilities around the world can not provide or promise better than +-/5%.

Historically, the voltage supplied in the UK (which is one of the best around the world today) is set at 240V and the supply range is between 226-254V. Many electrical distribution networks have been put in place to deliver electricity within this range. Since 1995, steps have been taken to harmonise the UK’s supply specification to 400/230v -10% +6%, which is close to Europe’s supplied voltage. This remains the current UK position.

Electricity Quality and Supply Regulations (EQS) will harmonize the supply across Europe at 400/230 +/-10% (253V-207V). EN 50160 states that voltage can vary around the nominal voltage in a band of +/-10% for minimally 95% of the time (measured with a 10-min integration interval). For LV customers only a 100%-of-time limit is set at +10%/-15% of nominal voltage.

 (EQS)
.

So why insist on +/-1% or better…No reason whatsoever. Most electrical and electronic equipment have tolerance of far greater than this.

So why insist on +/-1% or better…No reason whatsoever. Most electrical and electronic equipment have tolerance of far greater than this.
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