Factory Default; Mechanical Sealing; Signalization Leds - ComAp MainsPro G99TT Global Manual

Mains decoupling protection relay

Table of Contents

4.1.6 Factory default

MainsPro G99TT contains a default set of all setpoints, which corresponds to the typical requirement of

distribution network operator in some countries.

1. Enter the init screen by pushing the ENTER and ESC at the same time.

2. Press ← and then use the buttons ↑ and ↓ to enter the Factory default activation screen:

3. Using ← and → choose the required operation. By selecting YES, you will return all previously done

setting to the default values. Please note that by this selection, you will lose all setting done prior to

this operation! Press ENTER to confirm your selection.

4. By selecting NO and pressing ENTER or by pressing ESC, return to the measurement screens with no

change.

MainsPro G99TT allows to mechanically prevent the setting changes of selected setpoints by securing the

mechanical seal in locked position by sealing wire. The locked position is indicated at the MainsPro G99TT

side-print and on the alphanumerical display. For information what setpoints are sealing protected see

Factory default setting of MainsPro G99TT unit (page

There are 7 LEDs for indication of MainsPro G99TT status with the meaning indicated in the table below

In case of signaling different statuses by one LED, the following priorities apply, i.e. the higher priority

signal is provided by the LED:

Red flashing

Red

Orange flashing

Orange

Green

Note: The U and f signalization is immediate at detection of fault conditions, regardless of the set delay for

the unit trip. After the conditions get back to the fault-free state, the LEDs may move back to green colour,

regardless of whether the unit is currently in TRIP status.

Indication of LED LOM is immediate at detection of the particular protection stage (Vector shift or ROCOF)

and fault indication remains active for the period of time, set by the setpoint Basic: Imp Len Del.

TRIP signalization is delayed according to the particular delay of the appropriate protective stage.

MainsPro G99TT 1.0.0 Global Guide

47).

Table of Contents