GE D30 User Manual

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

GE D30 Specifications

General

Brand	GE
Model	D30
Category	Relays
Language	English