GE D30 Instruction Manual page 468

GROUPED ELEMENTS
The D30 contains one auxiliary undervoltage element for each VT bank. This element monitors undervoltage conditions of
the auxiliary voltage.
The
AUX UV1 PICKUP
voltage of the auxiliary voltage channel entered under
AUXILIARY VT X5 SECONDARY
The
AUX UV1 DELAY
Both
AUX UV1 PICKUP
undervoltage element can be programmed to use either definite time delay or inverse time delay characteristics. The
operating characteristics and equations for both definite and inverse time delay are as for the phase undervoltage
element.
The element resets instantaneously. The minimum voltage setting selects the operating voltage below which the element
is blocked.
5
5.7.12.7 Auxiliary overvoltage (ANSI 59X, IEC PTOV)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  VOLTAGE ELEMENTS  AUXILIARY OV1
 AUXILIARY OV1

The D30 contains one auxiliary overvoltage element for each VT bank. This element is intended for monitoring overvoltage
conditions of the auxiliary voltage. The nominal secondary voltage of the auxiliary voltage channel entered under
SETUP  AC INPUTS  VOLTAGE BANK X5  AUXILIARY VT X5 SECONDARY
pickup level.
5-258
selects the voltage level at which the time undervoltage element starts timing. The nominal secondary
is the per-unit base used when setting the pickup level.
setting selects the minimum operating time of the auxiliary undervoltage element.
and settings establish the operating curve of the undervoltage element. The auxiliary
AUX UV1 DELAY
Figure 5-146: Auxiliary undervoltage logic
AUX OV1

FUNCTION: Disabled
AUX OV1 SIGNAL

SOURCE: SRC 1
AUX OV1 PICKUP:

0.300 pu
AUX OV1 PICKUP

DELAY: 1.00 s
AUX OV1 RESET

DELAY: 1.00 s
AUX OV1 BLOCK:

Off
AUX OV1 TARGET:

Self-reset
AUX OV1 EVENTS:

Disabled
SETTINGS  SYSTEM SETUP  AC INPUTS  VOLTAGE BANK X5 
Range: Disabled, Enabled
Range: SRC 1, SRC 2
Range: 0.004 to 3.000 pu in steps of 0.001
Range: 0.00 to 600.00 s in steps of 0.01
Range: 0.00 to 600.00 s in steps of 0.01
Range: FlexLogic operand
Range: Self-reset, Latched, Disabled
Range: Disabled, Enabled
is the per-unit (pu) base used when setting the
D30 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
SYSTEM