Schneider Electric 3.0A, 2.0A, 5.0A Ammeter, Trip Unit Testing, Micrologic Trip Unit Configuration

Page 16

Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units

48049-136-05

Section 1—General Information

Rev. 01, 07/2012

 

 

ENGLISH

Trip Indicator Lights

The Ir trip indicator light (A) lights when a trip occurs because the Ir long-time pickup level was exceeded.

The Isd/Ii trip indicator light (B) lights when a trip occurs because the Isd short-time pickup or the Ii instantaneous pickup was exceeded.

The Ig trip indicator light (C) lights when a trip occurs because the Ig ground fault pickup was exceeded.

The Ap self-protection indicator light (D) lights when the trip unit overheats, the instantaneous override level is exceeded, or a trip unit power supply failure occurs.

Figure 12: Trip Indicator Lights

A B C D

06133245

6.0 A

 

Ammeter

The ammeter monitors and displays the circuit breaker currents. An alphanumeric screen (A) continuously displays the phase at the highest load. Navigation buttons (B) can be pressed to display the various monitored currents.

The process of checking the ammeter values can be stopped at any time. After several seconds, Micrologic trip units automatically return to displaying the phase at the highest load.

See the following section for addition information concerning the ammeter.

Figure 13:

Ammeter

 

A

100 %

 

40 %

B

 

menu

 

Trip Unit Testing

Trip unit functions can be tested using primary injection testing or secondary

 

injection testing.

Micrologic Trip Unit Configuration

 

Control Power

Table 6: Pickup Values

Sensor Plug Value Minimum Ground-Fault

(In)

Pickup

100–250 A

30% of Sensor Rating

400–1200 A

20% of Sensor Rating

1600–6300 A

500 A

The A trip unit was designed to be used with or without an external 24 Vdc power supply.

The following will be powered and functional even if the trip unit is not externally powered:

Fault protection for LSIG functions. The A trip unit is fully circuit powered for fault protection.

LED trip indication (powered by an onboard battery). The battery’s only function is to provide LED indication if all other power is off

All display functions and trip unit features power-up with current flow on one phase greater than or equal to the values in Table 6.

Ground-fault push-to-trip button works for testing ground fault with current flow on one phase greater than or equal to the values in Table 6.

The ground-fault push-to-trip is also functional if a Hand-Held Test Kit or Full-Function Test Kit is powering the trip unit.

14-EN

© 1999–2012 Schneider Electric All Rights Reserved

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Contents Conserver pour usage ultérieur Page Micrologic 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units Retain for future useHazard Categories and Special Symbols Please NoteFCC Notice Death or serious injuryTable of Contents Rating Plug Removal New Rating Plug Installation List of RegistersTrip Unit Settings General InformationIntroduction CommunicationsMicrologic 3.0A Trip Unit Micrologic 2.0A Trip Unit0A Trip Unit Micrologic 5.0A Trip Unit Micrologic 6.0A Trip Unit Trips and clears the fault. Circuit breaker 2 does not trip Zone-Selective InterlockingMicrologic Trip Unit Long-Time Delay Values Trip Unit SwitchesLong-Time Protection Micrologic Trip Unit Short-Time Delay Values Short-Time ProtectionInstantaneous Protection Indicator Lights Ground-Fault ProtectionOverload Indicator Light Micrologic Trip Unit Ground-Fault Pickup ValuesTrip Unit Testing Micrologic Trip Unit ConfigurationTrip Indicator Lights Control PowerFunction Specification External Power Supply15-EN Accessing Information AmmeterDisplay Ammeter MeasurementsCurrent Menu Current MenusRev , 07/2012 Ammeter 17-ENPeak Menu 18-ENSwitch settings menu displays Switch Settings Menu19-EN Switch Setting Adjustment OperationExamples Set pickup levelsSet time delay Set Time DelayRev , 07/2012 Operation 21-ENSet time delays Set Time Delays22-EN Zone-Selective Interlocking ZSI ZSI CombinationsUnits 23-ENWire circuit breakers for zone-selective Communication Module valuesInterlocking 24-ENSet communication module values 25-ENTrip Unit Settings Check Trip Unit SettingsTrip Unit Operation Verification ScreenEquipment Ground-Fault Trip Functions Testing Trip Unit ResettingTrip Unit Status Check 27-ENRequired Tools Trip Unit ReplacementPreparation Trip Unit Replacement Battery InstallationRating Plug Removal Trip Unit RemovalTrip Unit Installation 30-ENCircuit Breaker Accessory Cover ReplacementClose switch cover a 31-ENTrip Unit Setup Circuit Breaker Reconnection Trip Unit Installation Check32-EN New Rating Plug Installation Adjustable Rating Plug ReplacementRating Plug Removal Battery Replacement Circuit Breaker Accessory Cover RemovalBattery Replacement Circuit Breaker DisconnectionRev , 07/2012 Battery Replacement Withstand Module Replacement35-EN Appendix A-Register List List of RegistersRegister List Module Module Name Equation Address RangeRev , 07/2012 Appendix A-Register List 37-ENSchneider Electric