Larsen & Toubro Universal Test Kit User Manual

6.3 Test Procedure
a) Switch ON the testkit and connect the respective test cable to release and testkit connector
b) Set the pickup setting in the release for the test(O/L,S/C,E/F,Inst) which needs to be
Note:- Ensure while doing any particular test the other protection settings in the release
d) Set the test current value in test kit equal to the pick up setting of the release.
c) Set the same time delay of particular test in the release as well as in teskit.
e) Refer 5.1.2 for the navigation flow in test kit.
f) Refer Table 1 for ACB & Table 2 for MCCB to identify the type of test can be tested through
testkit.
Screen
Abbreviation
Details
Currrent Setting(A),Ir = In x … Ir
0.4 to 1.0 in steps of
0.05xIn
Time Delay , Tr (s) at 6 x Ir tr 3,10
Test Current Value : It 2,4,6,8
Thermal Reflectivity THM-MEM
Currrent Setting(A),Is = In x … Is 1.5,2.5,4,5.5,6.5
Time Delay , Ts (ms) DELAY/I2T OFF 100ms
Test Current Value : It
2.5In to 13In in steps of
0.5In
Currrent Setting(A),Ip = In x … Ip 1.5,2.5,4,5.5,6.5
Test Current Value : It
2.5In to 13In in steps of
0.5In
Currrent Setting(A),Ig = In x … Ig 0.2,0.3,0.4,0.5,0.6
Time Delay (s), Tg Tg 0.1, 0.2 s
Test Current Value : It
0.25In to 0.7In in steps of
0.05
Table 2
Parameter
Overload (Phase)
Short-Circuit
I2t OFF
Instantaneous
Earth Fault
I2t OFF
(MCCB)
Note : S/C and Inst testing at 8In is not Supported by testkit
14
Example:- While doing overload test , the other protection like Short-circuit,Earth-Fault,
of testkit
perfromed, also the same settings need to be done in testkit.
should be off.
Instatntaneous of the release should be turned OFF.

Larsen & Toubro Universal Test Kit Specifications

General

Brand	Larsen & Toubro
Model	Universal Test Kit
Category	Test Equipment
Language	English