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Technical Specifications NI 40 / 41 Series
1HYT
800001-503
ABB Limited
Distribution Automation
Products
Maneja,
Vadodara 390 013 India
Tel. : +91 265 2604384/5/6+91 265 2604397
Fax : +91 265 2638922
Email: [email protected]
www.abb.co.in
th4 Floor
NBCC Tower No.15Bhikaji Cama PlaceNew Delhi 110 066
Tel: +91 11-6186000Fax: +91 11-6197592/84035
North
rd
3 Floor,No. 9,Lala Lajpat Rai Sarani,(Elgin Road)Kolkatta 700
020Tel: +91 33-2479162/8015Fax: +91 33-2472427
East
ABB HouseDr. S.B. PathBallard EstateMumbai 400 038Tel.+91
22-56318231-39Fax:+91 22-56318276-77
West
Vandana House1st Floor, G. E. RoadRamkundRaipur 492 001Tel: +91
771-660816-18Fax: +91 771-653391
Central
Embassy Star,st
1 Floor, No.8, Place Road,Vasanth NagarBangalore-560052Tel: +91
80-2256315/16Fax: +91 80-2254147
South
Nos. 3C, 3D and 3F3 Floor, "Century Plaza"561 / 562, Anna
SalaiTeynampetChennai - 600 018Tel: +91 44-4340201/203Fax: +91
44-4340282
Regional Marketing Offices:
ANSIProtection functions
51
50
51N
50N
Three-phase over current protection, low-set stage ( IDMT or DT
)
Three-phase over current protection, high-set stage ( DT )
Earth fault protection, low-set stage ( IDMT or DT )
Earth fault protection, high-set stage ( DT )
Site selectable IDMT curves for low set stage
Four standard IDMT curves ( NI, VI, EI, LI ) as per IEC
standard
Wide and accurate numerical settings with perfect long time
stability
Latest five fault data recording
Measurement, monitoring and recording functions
Measurement of 3 phase current in primary or secondary terms
Measurement of neutral current in primary or secondary terms
Extensive relay internal self supervision monitoring relay
hardware and software
Trip lockout function
2 x 16 digit backlit LCD display
Control supply on, fault start / trip, relay internal failure
indication LED's
Display of fault cause indication
Display and indications
Four accurate current inputs
Normally open heavy duty output contact
Two change over signalling output contacts
Freely configurable output contacts
Dedicated output contact for relay internal self supervision
Low burden on current transformer
Design immune to any kind of electromagnetic interference
Inputs and outputs
Relay design
Dimensions : 176 ( H ) x 146 ( W ). Depth behind panel only 158
mm
Relay case with a degree of protection according to IP54
Design confirming to requirements of IEC 60255 / IS 3231
standards
Relay application
For earth-fault protection in solidly earthed, resistance
earthed and isolatedneutral networks
industrial applicationsFor protection of transformers, capacitor
banks, feeders of utility and
For selective short-circuit and time-over current protection of
distributionnetworks
Connection diagram
NI-40/01/2006/01-1000
