3.8.9.4 Frequency Relay Timing Test Screen
Figure 93 Frequency Relay Timing Test Setting Screen
•
The Target & Seal-In Settings button will change screens and will allow changes to meet the
manufacturer specifications.
•
The Pickup Settings button will change screens and will allow changes to meet the
manufacturer specifications.
The bottom of the screen has common buttons.
•
The Start button is used to begin testing. The Start button changes to become the Stop
button when the test is started. Pressing the STOP button will turn off all V/I Generators
immediately and fail the test.
•
The File button stores the present test values.
•
The Bat Sim ON button is used to turn the battery simulator on/off. When the battery
simulator power is on, the button will read Bat Sim OFF and vice versa.
•
The Test Menu button returns the user to the Frequency Test Screen.
•
The Main Menu button returns the user to the main screen menu. If the Main Menu button is
selected the test will be stopped and will return the generators to an inactive state.
3.8.9.4.1
Dynamic Frequency Timing Test
The unit performs a dynamic timing test on all under/over frequency relays either electro-
mechanical or solid-state, single or multi-set point. To test a typical multi-set point, solid-state
under frequency relay, the following procedure applies.
1. Set the NORMAL Line Frequency and VOLTAGE using the touch screen and numeric
keypad. Read the frequency and voltage selected on the appropriate displays.
2. Enter the Relay Tap (or Setting) frequency value in the Relay Tap window. Set the
desired FAULT Frequency (normally a value below, under frequency, or above, over
frequency, the Tap or Setting value) by using the touch screen and numeric keypad. This
is the frequency that the output will delta or step to. For doing a timing test enter the
appropriate trip time for that fault frequency.
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