TRIP UNIT
ཌቄڇᇮ
য়ླ၃0ླ၃0
DANGER
2.0-02
൩ඓԍୟഗ࿋ᇀཌቄ࿋ዃLj֡ፕኸ๖ഗ၂๖ྺ
OFF
DŽݴቄDžLjऐႁڑࣟئీᅙྜඇݣă
2
.
0
ຫ
2.0
!ۉጱྃ੩ഗ
ጺሶ
ᆅჾ
Mpro
!ۉጱྃ੩ഗᇑୟഗথڦۉጱጎዃăጎዃ॔
ୟഗ၎ۉୁĂዐႠۉୁࢅ0ईۉუLjሞ၄ࡗۉୁईۉუ
၎࠲ጒ้ਸୟഗă
ጎዃ࣏ਏᆶԍࢺीۉഗࠀీĂံڦ֪ଉĂኑࠀీࢅ
ཚ႑ࠀీăᅜሞ၄ׇਸୟഗ߃ቸժॽഄָأLjܸٗ
ָأई߸࣑ۉጱྃ੩ഗă
ۉጱྃ੩ഗᇑୟഗཚଉᅎۯጎዃথLjਏᆶऐۉཌቄࠀ
ీă
௬ӱฉದᆶᆩࢽহ௬Ljᅜۙኝۉጱྃ੩ഗڦ֖ຕă
ᇕࢅႀَ
!3/2!ଚକԨ֩ዐᆩڦᇕࢅႀَă
!
2.1
ఁ0ຫ
Please ensure that the breaker is placed in tripped
posi
Ɵ
on, that the opera
Ɵ
on indicator shows OFF and that
the mechanisms springs are fully discharged.
থںࠤቱ
ߛยዃຨ้ԍࢺ
ຨ้܌ୟۉୁยዃ
ST
ई
GF
ጎዃฉڦĐၽ୲đยዃ
ᅃْۉୁยዃ
থںईথںࠤቱۉୁยዃ
ຨ้܌ୟۉୁยዃ
ୟഗܮۨۉୁ
LT
ईࡗሜۉୁยዃ
ST
ई้ۨ܌ୟۉୁยዃ
้क़ईࡗሜԍࢺ
LT
ईࡗሜჽ้ݔྷ
Կࢇۉୁྃ੩ഗ
३ณڦຨ้
܌ୟ้क़ई้ۨ܌ୟۉୁยዃ
ST
ई܌ୟۉୁჽ้ݔྷ
ҾጎدߌഗܮۨኵڦԠຕ
ᅃْୟഗยዃ!
Ie
ڦԠຕ
ୟഗܮۨۉୁڦԠຕ
LT
ईࡗሜۉୁยዃڦԠຕ
GF
HSIO
C
I
I²t
Ie
Ig
Ii
In
Ir
Ist
LT
LTDB
MCR
RELT
ST
STDB
x CT
x Ie
x In
x LT
GF
HSIO
I
I²t
Ie
Ig
Ii
In
Ir
Ist
LT
LTDB
MCR
RELT
ST
STDB
x Ie
x In
x LT
Groundfault
Hi set Instantaneous protec
Ɵ
on
Instantaneous Short circuit Current se
ƫ
ng
'Slope' se
ƫ
ng on ST or GF device
Primary Current se
ƫ
ng
Ground, or Earth fault Current se
ƫ
ng
Instantaneous Short circuit Current se
ƫ
ng
Current ra
Ɵ
ng of Breaker
LT or overload Current se
ƫ
ng
ST or Timed Short circuit Current se
ƫ
ng
Long Time or Overload protec
Ɵ
on
LT or overload
Ɵ
me delay band
Making Current Release
Reduced Instantaneous
Short Time or Timed Short circuit Current se
ƫ
ng
STDB ST or short circuit
Ɵ
me delay band
x Ie Mul
Ɵ
ple of Primary Breaker se
ƫ
ng Ie
x In Mul
Ɵ
ple of Breaker Current ra
Ɵ
ng
x LT Mul
Ɵ
ple of LT or overload Current se
ƫ
ng
x CT
Mul
Ɵ
ple of installed sensor ra
Ɵ
ng
2.0 Trip unit
GENERAL INFORMATION
The Mpro Trip Unit is an electronic device that interfaces with a
circuit breaker. It monitorsthe breaker phase currents, neutral
current and/or voltage and trips the breaker in the event of an
over-current or voltage related condi
Ɵ
on.
It also can provide protec
Ɵ
ve relay func
Ɵ
ons, advanced metering,
diagnos
Ɵ
c features, and communica
Ɵ
ons. The Trip Unit can be
removed or replaced in the
Į
eld by de-energizing and removing the
cover of the circuit breaker.
The Trip Unit also connects with the circuit breaker
Ň
ux shi
Ō
er to
provide the electromechanical tripping func
Ɵ
on.
A user interface is provided on the front panel to allow adjustment of
the Trip Unit’s parameters.
ABBREVIATIONS AND ACRONYMS
The abbrevia
Ɵ
ons and acronyms in Table 2.1
used throughout this manual.
Table 2.1
Denomina
Ɵ
on / Descrip
Ɵ
on
NF1:ဣଚگუഘୟഗ