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NA11 - Manual - 02 - 2009

FUNCTION CHARACTERISTICS

Fun_50-51S3.ai

>>>RES

RESET

>>>def

≥1

>>>def

>>>RES

Start I>>>

Trip I>>>

CB-State

Start I

2ndh>

ON≡Enable 3rd overcurrent element

(Pickup within CLP)

(Pickup outside CLP)

Block1, Block2

I>>>TR-K

I>>>TR-L

I>>>ST-L

I>>>ST-K

CLP>>>

2nd harmonic restraint enable (ON≡Enable)

I>>>2ndh-REST

ICLP>>>Mode

CLP

>>>def

CLP

>>>

≥ I >>>

BF Enable (ON≡Enable)

I>>>BF

towards BF logic

I>>> BF

Trip I >>>

TRIPPING MATRIX

(LED+RELAYS)

A =“1”A =“0 or OFF”

Output t

CLP>>>

I>>> Enable

I>>> overcurrent element (50/51) Block diagram

CLP>>>

Output t

CLP>>>

CB State CB OPEN CB CLOSED CB OPEN

0.1 s

HIGH THRESHOLD/

BLOCK

LOW THRESHOLD/

UNBLOCK

HIGH THRESHOLD/

BLOCK

A = ON - Change setting

B = OFF

C = ON - Element blocking

(ON≡

Inhibit

)

Start I>>>

(ON≡

Inhibit

)

I> inhibition

I> disbyl>>>

I>> inhibition

I>> disbyl>>>

≥1

CLP I>>>

Phase overcurrent (50/51) - Third element logic diagram (I>>>)

Brand	Thytronic
Model	NA11
Category	Relays
Language	English

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