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5

Instruction Booklet 

IB019013EN

Effective March 2019

Zone selective interlocking test kit 

For Digitrip 520M, 520MC and 1150 trip units 

  

EATON

 www.eaton.com

Zone configurations 

The figures below depict some of the most common ZSI wiring schemes.  These configurations 

describe how to connect the ZSI plugs to the breakers to be tested and where each zone plug should be 

connected to the corresponding receptacle on the test box. The table below each figure describes the 

ZSI wiring scheme configuration and what the ZSI test box is testing on each configuration based on the 

selections made on the HMI. Circuit diagrams of these setups can be found in the “Zone Config” screen 

subsection of the “Navigating the HMI Screens” section in this manual.

otee:

N

For M-T-T-M, repeat test for each tie breaker.

ZSI

Test

Box

Zone 1

Zone 2

Zone 3

Main1 Digitrip

Tie Digitrip

Main2 Feeder Digitrip

Configuration 1

Main Tie Main

Configuration 1
Arrangement 

double

Main fault:  This simulates a fault originating 

between the M1 (main 1) breaker and the tie 

breaker

Tie fault:  This simulates a fault on originating 

downstream of the M1 (main 1) breaker and 

the tie breaker.

Feeder fault:  This simulates a fault originating 

on the load side of a feeder on the main 2 bus 

(main 2 feeder).  This fault would flow through 

main 1, the tie breaker, and the main 2 feeder 

breaker.

Summary of Contents for ZSI

Page 1: ...TRICAL PERSONNEL SHOULD BE PERMITTED TO WORK ON THE EQUIPMENT m CAUTION SPECIFIC OPERATING PROCEDURES MUST BE DEVELOPED BY THE RESPONSIBLE PARTY DUE THE UNIQUE APPLICATION AND VAST VARIETY OF SYSTEM AND USER REQUIREMENTS FAILURE TO DEVELOP SPECIFIC PROCEDURES COULD LEAD TO IMPROPER USE OR OTHER MORE SERIOUS CONSEQUENCES m CAUTION PLEASE READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE ATTEMPTING TO O...

Page 2: ...ound time 0 3 sec Amp unbalance Off Amp unbalance time 10 sec Phase loss OFF Main PU 10 x In Maintenance mode Disabled Frequency 60 HZ BC relay reset Auto Sliding demand Off Wave form capture Off Rev power sensing Disabled Table 2 Digitrip 520M 520MC settings Parameter Setting Parameter Setting Long delay setting 0 4 Long delay time 6xlr 2 Short delay setting 3 Short delay time Depends on zone Z1 ...

Page 3: ... the power cable into the ZSI test box 5 Plug the power cable into a standard 120V outlet 6 Refer to the Test Sequence screen in the Navigating the HMI Screens section to determine which series of tests need to be performed 7 Refer to the Zone Configurations section to determine the correct cable connections for the desired test 8 Plug a ZSI zone cable into one of the zone plugs on the ZSI test bo...

Page 4: ... the correct zone 13 Move the selector switch on the ZSI test box to the ON posi tion 14 Navigate to the Test Screen on the display panel 15 Select Single or Double based on the switchgear configura tion being tested 16 Select Main Fault Tie Fault or Feeder Fault 17 Press the Initiate Test button to start the test 18 After the test is completed press the Reset Test button to prepare the tester for...

Page 5: ...n the selections made on the HMI Circuit diagrams of these setups can be found in the Zone Config screen subsection of the Navigating the HMI Screens section in this manual Note N For M T T M repeat test for each tie breaker ZSI Test Box Zone 1 Zone 2 Zone 3 Main1 Digitrip Tie Digitrip Main2 Feeder Digitrip Configuration 1 Main Tie Main Configuration 1 Arrangement double Main fault This simulates ...

Page 6: ...iguration 2 Main Tie Main Configuration 2 Arrangement double Main fault This simulates a fault originating between the M2 main 2 breaker and the tie breaker Tie fault This simulates a fault originating downstream of the M2 main 2 breaker and tie breaker Feeder fault This simulates a fault originating on the load side of a feeder on the main 1 bus main 1 feeder This fault would flow through main 2 ...

Page 7: ...Main fault This simulates a fault originating on the load side of the main 1 breaker Feeder fault This simulates a fault originating on the load side of the main 1 feeder breaker ZSI Test Box Zone 1 Zone 2 Zone 3 Main2 Digitrip Main2 Feeder Digitrip Configuration 4 Main2 Main2 Feeder Configuration 4 Arrangement single Main fault This simulates a fault originating on the load side of the main 2 bre...

Page 8: ...double main opposite feeder Simultaneous main fault This simulates simultaneous faults One originates on the load side of the main 1 breaker before the tie and the other originates on the load side of the main 2 feeder ZSI Test Box Zone 1 Zone 2 Zone 3 Main2 Digitrip Main1 Feeder Digitrip Configuration 6 Simultaneous Main Fault Main1 Digitrip Configuration 6 Arrangement double main opposite feeder...

Page 9: ...ections Once the check box has been selected the Test Screen button becomes visible Digitrip settings screen The Digitrip Settings button will take you to the Digitrip settings screen shown below Here you can select which Digitrip model you are testing and find all of the settings required to be enabled on the trip units in order to successfully test them using the ZSI test box Zone configuration ...

Page 10: ...see 5 5 This area of the screen is where buttons are that allow a user to change the arrangement of the switchgear lineup being tested 6 After a test is performed this area displays a timer that is relative and useful when troubleshooting any issues related to the wiring of the test box These are not true trip times but can be used to determine ZSI functionality 7 This is the area where the test r...

Page 11: ...p plugs are installed in correct breakers Single double feeder tie Z1 tripped during Z2 test Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers Double tie Z3 tripped during Z2 test Check trip unit settings and ZSI configuration map to ensure trip plugs are installed in correct breakers Z3 error messages Double feeder fault Z3 trippped too slow...

Page 12: ...______________________________ Ground time 0 4 ________________________________________ Arc flash reduction off __________________________________ Arc flash reduction setting R5 ___________________________ Long delay time 6xlr 2 ________________________________ Breaker Name _______ Breaker Position ________ Setting required for testing Original setting Setting required for testing Original setting...

Page 13: ...__________________ Inst PU 4 x ln ___________________________________________ Wave form capture off __________________________________ Gnd PU 0 3 ____________________________________________ Rev power sensing disabled _____________________________ Breaker name __________ Breaker position ___________ Setting required for testing Original setting Setting required for testing Original setting Curve t...

Page 14: ...ractual agreement between Eaton and the purchaser THERE ARE NO UNDERSTANDINGS AGREEMENTS WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT BETWEEN THE PARTIES ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON THE CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY...

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