Normally the distribution voltage is 230V in Sri Lanka. But a variation of 6% of distribution voltage is allowed.
Then;
The minimum voltage allowed is 216.2 V.
The maximum voltage allowed is 243.8 V.
Normally the distribution frequency is around 50 Hz. But a variation of 1% of distribution frequency is allowed.
Then;
The minimum frequency allowed is 49.5 Hz.
The maximum frequency allowed is 50.5 Hz.
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