Carrier 06E Specifications download pdf (Page 112)

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4.11 — Voltage and Current Unbalance

VOLTAGE UNBALANCE (Maximum 2%)

Voltage unbalance can cause motors to overheat and fail.

Below is the recommended method for determining

voltage unbalance.

Example: Supply voltage is 240-3-60

Average Voltage =

Determine maximum deviation from average voltage:

(AB) 243 – 239 = 4 volts

(BC) 239 – 236 = 3 volts

(AC) 239 – 238 = 1 volt

Maximum deviation is 4 volts.

Determine % voltage unbalance:

% Voltage unbalance = 100 x

= 1.7%

This amount of phase unbalance is satisfactory as it is

below the maximum allowable of 2%.

IMPORTANT: If the supply voltage phase unbalance

is more than 2%, contact your local electric utility

company immediately.

239

243 + 236 + 238

717

= 239 volts

AB = 243 volts

BC = 236 volts

AC = 238 volts

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Chandan Singh 13 May 2025 | 15:14:33

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Carrier 06E Specifications Page 112