Eaton ZSI, Instruction Booklet

Page: 2 / 14

2
Instruction Booklet IB019013EN
Effective March 2019
Zone selective interlocking test kit
For Digitrip 520M, 520MC and 1150 trip units
EATON
www.eaton.com
Read before operating
The ZSI tester was designed to work with prescribed Digitrip
settings and requires specific connections from the test box to
the breakers under test. If these are not followed, the test will be
invalid and you will get unexpected results.
The ZSI tester will not work with 520 trip units. It will only
work with 520M, 520MC and 1150 trip units in Magnum DS
breakers.
Setting the Digitrip time and multiplier set-
tings
The ZSI test box can only accurately test the ZSI wiring scheme if
each one of the Digitrips being tested are configured with the appro-
priate time and multiplier settings. These settings are shown in the
tables below, Tables 1 and 2: Digitrip settings, as well as through the
“DIGITRIP SETTINGS” button on the startup screen. For instruction
on how to navigate to these settings on your Digitrip unit consult
Table 3: Setting locations, and the Digitrip manuals: IL70C1037H05,
and IL70C1036H06.
Table 1. Digitrip 1150+ settings
Parameter Setting
LSIG On
Long slope I2T
Long PU 0.4 sec
Long time @ 6 X I
r
2.0 sec
Long memory Off
Short slope Flat
Short PU 3 X Ir
Short time *Depends on zone:
Z1 = 0.5 sec;
Z2 = 0.3 sec;
Z3 = 0.10 sec
Inst PU 4 x In
Gnd PU 0.3
Ground slope Flat
Ground 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 @ 6xl
r
2
Short delay setting 3 Short delay time *Depends on zone:
Z1 = 0.5 sec;
Z2 = 0.3 sec;
Z3 = 0.10 sec
Instantaneous setting OFF Ground setting 0.4
Ground time 0.3 Arc flash reduction
setting
R5
Arc flash reduction OFF
*Assuming Z1 is connected to main, Z2 is directly downstream of Z1, and Z3 is directly
downstream of Z2.
Table 3. Settings locations
Digitrip
unit Location Settings
520M
520MC
Rotary switches on
front of Digitrip unit
Long delay setting, long delay time, short delay
setting, short delay time, instantaneous setting,
ground setting, ground time, arc flash reduction
setting, arc flash reduction
1150+ PGM set
→
current Curve type, long slope, long pu, long time, long
memory, short slope, short pu, short time (all zones),
inst PU, GND PU, ground slope, ground time, amp
unbalance, amp unbalance time, phase loss
1150+
PGM set
→
system
Main PU, maintenance mode, frequency, BC relay
reset, sliding demand, wave form capture, rev power
sensing
Setup procedure
1. Ensure all Digitrip units have the settings required for ZSI testing.
Fill out ZSI tester worksheets when a change must be made.
See the end of this instruction manual for ZSI tester worksheets.
2. Open the ZSI test kit by releasing the two latches around the
perimeter of the case.