Table of contents
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
11
4 SIRIUS 3RV2 motor starter protectors................................................................................................... 379
4.1 Standards...................................................................................................................................379
4.2
Produc
t description ....................................................................................................................380
4.2.1
Introduc
tion ................................................................................................................................380
4.2.2 Vers
ions .....................................................................................................................................381
4.2.3 Applic
ations................................................................................................................................382
4.2.4 Motor s
tarter protectors..............................................................................................................383
4.2.5 Performanc
e features ................................................................................................................384
4.3 Produc
t combinations ................................................................................................................385
4.4
Func
tions....................................................................................................................................386
4.4.1
Ov
erload and short-circuit protection.........................................................................................386
4.4.1.1 Tripping c
lasses .........................................................................................................................387
4.4.1.2 Tripping charac
teristics ..............................................................................................................388
4.4.2 Phas
e loss sensitivity.................................................................................................................390
4.4.3 Protec
ting single-phase loads or DC loads................................................................................390
4.4.4 Tes
t function...............................................................................................................................390
4.5 Configuration
..............................................................................................................................391
4.5.1
Short-c
ircuit protection ...............................................................................................................391
4.5.2 Motor protec
tion .........................................................................................................................391
4.5.3 Sy
stem protection ......................................................................................................................391
4.5.4 Motor protecti
on with overload relay function ............................................................................392
4.5.5 Short-c
ircuit protection for starter combinations ........................................................................392
4.5.6 Trans
former protection...............................................................................................................393
4.5.7 Main switc
h ................................................................................................................................393
4.5.8 Use in IT s
ystems ......................................................................................................................393
4.5.9 Switc
hing direct current..............................................................................................................394
4.5.10 D
evices for North America (UL/CSA) ........................................................................................395
4.5.10.1 Approved according to UL
508/CSA C22.2 No. 14....................................................................395
4.5.10.2
Approval as "circuit breaker" according to UL 489/CSA C 22.2 No. 5-02 .................................396
4.5.11 A
pplication environment.............................................................................................................396
4.5.12 S
electing the motor starter protectors........................................................................................398
4.5.13
Project guidelines for use downstream of frequency converters/inverters with pulsed
voltage........................................................................................................................................398
4.5.13.1
The effects of high-frequency currents on the thermal overload release ..................................398
4.5.13.2 Capac
itive leakage currents.......................................................................................................399
4.5.13.3
Speed control of motors with characteristic-controlled frequency converters ...........................400
4.6 Mounting
....................................................................................................................................401
4.6.1
Standard mounting
.....................................................................................................................401
4.6.1.1 Minimum cl
earances and mounting position..............................................................................401
4.6.1.2 Mounting
....................................................................................................................................402
4.6.2 Mounting in li
miter circuit ...........................................................................................................403
4.7 Connec
tion.................................................................................................................................403
4.8 Operation
...................................................................................................................................404
4.8.1
Setting the c
urrent......................................................................................................................404
4.8.2 Testing the overl
oad release......................................................................................................405
4.8.3 Testing the overload
relay function (3RV21) .............................................................................405
4.8.4 Sec
uring.....................................................................................................................................406
4.8.5 Rec
losing after tripping ..............................................................................................................406
4.9 Ac
cessories................................................................................................................................407
4.9.1
Ac
cessories overview ................................................................................................................407
4.9.2 Ins
tallation rules/Component rules ............................................................................................409
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