ABB Relion 670 series - Page 380

ABB Relion 670 series

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All signals are reset if:

• the direction of movement reverses

• the rotor angle detector resets without a slip being counted or

• no rotor relative movement was detected during the time

ResetTime

.

Vcos< 0.92 VBase

ANSI07000005.vsd

Imin > 0.10 IBase

0.2  Slip.Freq.  8 Hz

AND

  startAngle

AND

PICKUP

Z cross line ZA - ZC

Z cross line ZC - ZB

AND

AND

ZONE1

ZONE2

Counter

N1Limit

a

b

a  b

  tripAngle

AND

TRIP1

Counter

N2Limit

a

b

a  b

AND

TRIP2

OR

TRIP

ANSI07000005 V2 EN-US

Figure 198: Simplified logic diagram for pole slip protection PSPPPAM (78)

7.10.8 Technical data

SEMOD175138-1 v1

GUID-88E02516-1BFE-4075-BEEB-027484814697 v2

Table 162: PSPPPAM (78) technical data

Function

Range or value Accuracy

Impedance reach (0.00 - 1000.00)% of Zbase ±2.0% of V

n

/I

n

Zone 1 and Zone 2 trip

counters

(1 - 20) -

Section 7 1MRK 502 066-UUS B

Impedance protection

374

Technical manual

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