Blog Posts - Voltage Unbalance



SINGLE-PHASING ON TRANSFORMER PRIMARY

Single-phasing is the worst case of unbalance and can either be due to an open phase in the primary or secondary side of a transformer. However, this post will only tackle single-phasing on transformer primary, which exposes electrical equipment such...

SINGLE-PHASING ON TRANSFORMER SECONDARY

Single-phasing occurs when one phase of a three-phase system is intentionally or accidentally opened. It is considered as the worst case of Voltage Unbalance and can either be in the primary side or secondary side of a distribution transformer. Howev...

SINGLE-PHASING ON TRANSFORMER SECONDARY

Single-phasing occurs when one phase of a three-phase system is intentionally or accidentally opened. It is considered as the worst case of Voltage Unbalance and can either be in the primary side or secondary side of a distribution transformer. Howev...

POWER QUALITY BASICS: VOLTAGE UNBALANCE

Voltage Unbalance (or Imbalance) is defined by IEEE as the ratio of the negative or zero sequence component to the positive sequence component. In simple terms, it is a voltage variation in a power system in which the voltage magnitudes or the phase...

POWER QUALITY BASICS: VOLTAGE UNBALANCE

Voltage Unbalance (or Imbalance) is defined by IEEE as the ratio of the negative or zero sequence component to the positive sequence component. In simple terms, it is a voltage variation in a power system in which the voltage magnitudes or the phase...


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