12
Instruction Booklet
IB019013EN
Effective March 2019
Zone selective interlocking test kit
For Digitrip 520M, 520MC and 1150 trip units
EATON
www.eaton.com
ZSI breaker testing work sheet Digitrip 520M, 520MC
The following are the test settings used while programming the 520M and 520MC Digitrip units. If a parameter setting does not match the
one required for testing, record it in the space provided, and then modify the setting to match the chart. After testing, remember to change
your settings back to the states you record below.
Setting (required for testing) Original setting
Setting (required for testing) Original setting
Long delay setting (0.4) _________________________________
Short delay time Z1* (0.50 sec) __________________________
Short delay setting (3)___________________________________
Short delay time Z2* (0.30 sec) __________________________
Instantaneous setting (off) _______________________________
Short delay time Z3* (0.10 sec) __________________________
Ground time (0.3) _______________________________________
Ground time (0.4) _______________________________________
Arc flash reduction (off) _________________________________
Arc flash reduction setting (R5) __________________________
Long delay time @ 6xl
r
(2) _______________________________
Breaker Name: _______ Breaker Position: ________
Setting (required for testing) Original setting
Setting (required for testing) Original setting
Long delay setting (0.4) _________________________________
Short delay time Z1* (0.50 sec) __________________________
Short delay setting (3)___________________________________
Short delay time Z2* (0.30 sec) __________________________
Instantaneous setting (off) _______________________________
Short delay time Z3* (0.10 sec) __________________________
Ground time (0.3) _______________________________________
Ground time (0.4) _______________________________________
Arc flash reduction (off) _________________________________
Arc flash reduction setting (R5) __________________________
Long delay time @ 6xl
r
(2) _______________________________
Breaker Name: _______ Breaker Position: ________
Setting (required for testing) Original setting
Setting (required for testing) Original setting
Long delay setting (0.4) _________________________________
Short delay time Z1* (0.50 sec) __________________________
Short delay setting (3)___________________________________
Short delay time Z2* (0.30 sec) __________________________
Instantaneous setting (off) _______________________________
Short delay time Z3* (0.10 sec) __________________________
Ground time (0.3) _______________________________________
Ground time (0.4) _______________________________________
Arc flash reduction (off) _________________________________
Arc flash reduction setting (R5) __________________________
Long delay time @ 6xl
r
(2) _______________________________
Breaker Name: _______ Breaker Position: ________
Setting (required for testing) Original setting
Setting (required for testing) Original setting
Long delay setting (0.4) _________________________________
Short delay time Z1* (0.50 sec) __________________________
Short delay setting (3)___________________________________
Short delay time Z2* (0.30 sec) __________________________
Instantaneous setting (off) _______________________________
Short delay time Z3* (0.10 sec) __________________________
Ground time (0.3) _______________________________________
Ground time (0.4) _______________________________________
Arc flash reduction (off) _________________________________
Arc flash reduction setting (R5) __________________________
Long delay time @ 6xl
r
(2) _______________________________
Breaker Name: _______ Breaker Position: ________
* Assuming Z1 is connected to main, Z2 is directly downstream of Z1, and Z3 is directly downstream of Z2.
** If supplied.