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9.13 I2/I1> – Unbalanced Load Protection

9.13.1

I2/I1>: Device Planning Parameters

I2/I1> . Mode [Device planning / Projected Elements]

“-”

Only available if:

• Prot . Settings valid = Software•

“-”, use

╚═▷ Device planning

P.1

Unbalanced Load-Stage, general operation mode

I2/I1> . De󰈛nition [Device planning / De󰊟nition]

Trip

Only available if:

• Prot . Settings valid = Software•

Trip, Alarm

╚═▷ De󰊟nition

P.1

Unbalanced Load-Stage: If set to “Alarm”: The function operates as a supervision function, i.e. a fault generates

neither alarm nor trip, but an »Alarm« signal gets issued instead. If set to “Trip”: The function operates as a

protection function, i.e. trips the breaker in case of a fault.

9.13.2

I2/I1>: Settings

I2/I1> . Function [Protection Para / I2/I1>]

Active Inactive, Active

╚═▷ Mode

P.1

Permanent activation or deactivation of module/stage.

I2/I1> . I2/I1 [Protection Para / I2/I1>]

20% 10%  . . .  40% P.1

I2/I1 unbalance trip pickup setting (in percent), i.e. the ratio of negative sequence current I2 to the positive sequence

current I1.

I2/I1> . t [Protection Para / I2/I1>]

0.1s 0.00s  . . .  300.00s P.1

Time delay for trip or alarm

85WIC1WIC1-2.0-EN-REF

9 Protection Parameter

9.13 I2/I1> – Unbalanced Load Protection

Seg WIC1 Reference Manual

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