ACB Testing
Universal Test Kit
Compatible with following L&T Protection Releases:-
- SR Protection releases of C-power ACB family.
- UNRS protection release of U-power ACB Family.
- MTX and RC release of D-Sine MCCB Family.
Salient Features:
- Test the release for
- Overload , Short-circuit ,Instantaneous and Earth Fault protection
- Unique O-LED display.
- Navigation through touch keys.
Test Kit UN – ES1
Salient Features
- Test – Kit for SR 18G/SR18Gi with display
- Operates from 230V AC supply & generates single phase voltage test signals.
- Tests the release for
1] Phase fault i.e. for overload, short circuit and instantaneous protection
2] Earth Fault Protection - Test current multiples
1] For phase faults: 2.5in, 4.5in, 6.5in,9.5in, 11in, 13in
2] For earth fault – 0.25in, 0.35in, 0.45in, 0.55in - Five 7- segments LED display indicates the trip time(two places after decimal
Test kit SRT-2
Salient Features
- Test – Kit for SR 18G/SR18Gi/SR21i releases
- Operates from 230V AC supply & generates single phase voltage test signals.
- Tests the release for
1] Phase fault i.e. for overload, short circuit and instantaneous protection
2] Earth Fault Protection - Test current multiples
1] For phase faults: 2.5in, 4.5in, 6.5in,9.5in, 11in, 13in
2] For earth fault – 0.25in, 0.35in, 0.45in, 0.55in - Five 7- segments LED display indicates the trip time(two places after decimal
Thermo-magnetic release Type – DN1
-
DN1 Thermo-magnetic release offers reliable protection against overload, short- circuit and earth faults via multicap Cts. with ambient temperature compensation from -5C to 50C.
Protection
- Unique Individual phase O/L setting adjustment helps to avoid the nuisance tripping of ACB’s in unbalance load condition(due to single phase loads) on distribution transformer. Overload pick-up range :0.75 to 1 times In
- Two taps on CT’s (working as rating plug) help in selecting operating threshold. Short Circuit pick up range: 5.5 to 7.5 times In with minimum impulsion time of 25 ms to prevent nuisance tripping due to transients
- Offered with auxiliary earth fault release model. Earth- fault pick uprange: 0.2 too 0.5 times In
Overload Protection
Short- Circuit Protection
Earth Fault Protection
Microprocessor Based Release -SR18 & SR21G
Salient Features
- Self powered & true RMS sensing
- Comprehensive Protection
1] SR18 : Overload(phase) and short- circuit
2] R18G: Overload(phase),short- circuit and Earth Fault Protection - True Hot & Cold Characteristics & switchable thermal memory.
- Multi state LED to indicate
1] Power-on Condition
2] Test Mode - Individual fault annunciation through LEDs
- AN1 module for remote fault indication through LEDs with changeover contact for each kind of fault.
- Provision for self diagnostic test (without tripping the breaker)
- Test Kit(SRT-2 ) available for testing the releases
- Conformance to EMI/EMC standards
Microprocessor Based Release -SR18 & SR21G
Salient Features
- Self powered & true RMS sensing
- Comprehensive Protection
1] SR18 : Overload(phase) and short- circuit
2] R18G: Overload(phase),short- circuit and Earth Fault Protection - True Hot & Cold Characteristics & switchable thermal memory.
- Multi state LED to indicate
1] Power-on Condition
2] Test Mode - Individual fault annunciation through LEDs
- AN1 module for remote fault indication through LEDs with changeover contact for each kind of fault.
- Provision for self diagnostic test (without tripping the breaker)
- Test Kit(SRT-2 ) available for testing the releases
- Conformance to EMI/EMC standards
Microprocessor Based Release - SR18G with display
Salient Features
- Self powered & true RMS sensing
- True Hot & Cold characteristics & switchable thermal memory
- Unique 3 line O-LED display (Organic LED)
- Offers comprehensive protection against overload – Phase & neutral , Short- Circuit, Instantaneous, Earth- Fault
- Setting Overload delay
- Settable Instantaneous setting with provision of OFF
- Individual fault LED indication
- Provision for self diagnostic test
- Conformance to EMI/EMC standards
- Testing through test kit
- Separate vision with Zone Selective Interlocking (ZSI) – SR18Gi with display
Microprocessor Based Release - SR21i
Salient Features
- Self powered & true RMS sensing
- Inbuilt Zone Selective Interlocking (ZSI)
- Provision for self diagnostic test
- True Hot & Cold characteristics & switchable thermal memory
- Multi- state LED to indicate
1] Power On indication
2] Test mode - Individual fault annunciation through LEDs
- Provision for AN1 module for remote fault indication through LEDs with changeover contact for each kind of fault
- Direct tripping of breaker- reliable tripping with minimum time delay
- Test kit available for testing the release(SRT-2)
- Realistic hot and cold curves which take into account integrated heating effect
- Conformance to EMI/EMC standards
Microprocessor-based, Communication-capable Release - SR71
Salient Features
- True RMS sensing
- Offers comprehensive protection against overload, short- circuit
- High resolution backlit LCD display
- Intelligent Pre- trip alarm to prevent system shutdown
- Password protected settings and commands
- MODBUS RTU protocol with intrinsic RS 485 port
- LED indication for POWER ON, different faults and Pre- Trip alarm
- 2 sets of storable protection settings
- Last 5 trips & 128 event records with time & date stamping
- 3 programmable contacts-1 for micro controller failure, 2 for basic fault annunciation
- 4-relay Contacts for indication of exceeding maximum demand,Pre-trip alarm and control on breaker(closing and opening)
- Rating- plug for precise protection at lower load currents
- Auto- doubling featuresto prevent nuisance tripping
- Thermal reflectivity enables faster tripping on recurrent overloads
- Inbuilt Zone Selective Interlocking
- Provision for Self- diagnostic test
- Conformance to EMI/EMC standards
