neutral displacement relay - easun reyrolle limited
TRANSCRIPT
Neutral Displacement Relay B37
The policy of Easun Reyrolle is one of continuous improvement and development. The company therefore reserves the right to supply equipment,
which may differ slightly from that described and illustrated in this publication.
Description
The relay comprises an attracted armature element fed via a
rectifier and series resistor. It can be provided with either a fixed
setting, or variable settings using a plug bridge. It has a minimum
withstand of rated voltage continuously.
Applications
Neutral displacement detection can be applied in either of the
following situations:
To initiate an alarm for a single phase to earth faulton an insulated neutral system
With such a system an earth fault on one phase will cause the
voltages on the other 2 phases to rise with respect to earth and
can reach the phase-to-phase voltage.
The relay is to be connected across a secondary open delta
winding of a 3 phase, 5 limb, voltage transformer which has the
primary star point earthed. The voltage across the open delta
secondary will rise from zero (or near zero depending on voltage
balance) to as high as 3 times the secondary winding voltage per
phase, e.g. 63.5V windings will produce up to 190V across the
relay for a phase to earth fault close to the VT. B37 relays are
rated to withstand this.
To effect tripping on earthed neutral systems.
When the upstream protection isolates an earth fault on a feeder
on a delta connected HV side of a power transformer, the
possibility remains of voltage rise on the two sound phases if
the feeder continues to be energized from the LV side of the
power transformer. The residual voltage of the feeder operates
the relay at the transformer end of the HV feeder and the relay
trips the LV circuit breaker. When the HV windings of the power
transformer are delta connected, or star connected with the
neutral not available, the neutral displacement protection requires
the same equipment as described for the first application above.
Ordering Information
• Rating
• Setting value or setting range
• Case style and size
Qualification
ISO 9001-2000
Note:
1. All dimensions are in mm
2. All dimensions are measured equidistant from centre line
3. Maximum depth of equipment inside panel : 200mm
PART CASE CUT OUT BEZEL
SIZE A B C D
01 2/3V 149.5 148 170 170
02 1V 221 148 243 170
Cutout Details When the HV windings are star connected with the neutral
available then the relay can be energized from a single phase
voltage transformer having its primary connected between the
neutral and earth.
Either scheme can be supplemented by a definite time delay
relay if required.
Cases
Single pole Modular size 4
Vedette 2/3V or 1V
Neutral Displacement Relay - B37
FACT
/B37
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Sales OfficesBangaloreEasun Reyrolle Ltd.#17/3 Arakere, Bannerghatta Road,Bangalore - 560 076, India.Tel: +91 80 26581023/3268Fax: +91 80 26580642Email: [email protected]
BhopalEasun Reyrolle Ltd.H.No.16, Essarjee HomesNear Gopal Nagar, Kalan RoadPiplani, Bhopal - 462 021, India.Telefax: +91 755 2684221Email: [email protected]
ChennaiEasun Reyrolle Ltd.6th Floor, Temple Tower, 672,Anna Salai, NandanamChennai - 600 035, India.Tel: +91 44 24346425/24347608Fax: +91 44 24346435Email: [email protected]
DelhiEasun Reyrolle Ltd.29/12, Ground Floor, East Patel NagarNew Delhi - 110 008, India.Tel: +91 11 25747321/25747322Fax: +91 11 25747320Email: [email protected]
KolkataEasun Reyrolle Ltd.4, Dr.Sundari Mohan Avenue, 5th FloorFlat No.18, Kolkata - 700 014, India.Tel: +91 33 22848320Fax: +91 33 22848326Email: [email protected]
MumbaiEasun Reyrolle Ltd.23, Kasturi Building, Jamshedji Tata RoadMumbai - 400 020, India.Tel: +91 22 22022270/22855415Fax: +91 22 22825703Email: [email protected]
SecunderabadEasun Reyrolle Ltd.#2, 1st Floor, Paradise ChambersOpp Hotel Ambassador1-7-196 Prender Ghast RoadSecunderabad - 500 003, India.Telefax: +91 40 27817847Email: [email protected]
CORPORATE OFFICEEasun Reyrolle Limited.,98 Sipcot Industrial ComplexHosur 635 126, India.Tel: +91 4344 401600/01/02Fax: +91 4344 276397
TURNKEY PROJECTSBUSINESS/AMR BUSINESS#389, “Rasukumaki”, HulimavuBegur Hobli, Bannerghatta RoadBangalore - 560 076, India.Tel: +91 80 40477200/ 201Fax: +91 80 40477202Email: [email protected]
HOSUR WORKS#98, Sipcot Industrial ComplexHosur - 635 126, India.Tel: +91 4344 401600/01/02Fax: +91 4344 276397
CENTRAL MARKETING &EXPORTS BUSINESS#17/3 ArakereBannerghatta RoadBangalore - 560 076, India.Tel: +91 80 26581023/3268Fax: +91 80 26580642Email: [email protected]
BANGALORE WORKS#17/3 Arakere, Bannerghatta RoadBangalore - 560 076, India.Tel: +91 80 26581023/3268Fax: +91 80 26580642Email: [email protected]
AUTOMATION BUSINESS#389, “Rasukumaki”, HulimavuBegur Hobli, Bannerghatta RoadBangalore - 560 076, India.Tel: +91 80 40477200/ 201Fax: +91 80 40477202Email: [email protected]
Corporate OfficeEasun Reyrolle Limited. 98 Sipcot Industrial Complex,
Hosur 635 126 India.Tel: +91 4344 401600/01/02
Fax: +91 4344 276397www.easunreyrolle.com
Technical Information
Ratings63.5V 110V, 190V A.C
SettingsFixed at 10%, 15%, 20%, 25%, 30% or 40%
or 10% to 25% in 5% steps
or 10% to 40% in 10% steps
Operating time30ms at twice the setting
Burden0.06VA at pick up
6.0VA at 10 times the setting
(standard relay)
Contact arrangements (self reset)
2 normally open
or 1 normally open and 1 normally closed
Contact ratingsMake and carry continuously
1500VA A.C or 1500WD.C within limits of 660V and 3A.
Make and carry 8A for 3 seconds or 16A for 1 second
Break300VA A.C or 75W D.C (inductive L/R = 0.04)
within the limits of 250V and 5A
Wiring Diagrams
Typical Wiring Diagram for B37 Relay
Technical Information
Ratings63.5V 110V, 190V A.C
SettingsFixed at 10%, 15%, 20%, 25%, 30% or 40%
or 10% to 25% in 5% steps
or 10% to 40% in 10% steps
Operating time30ms at twice the setting
Burden0.06VA at pick up
6.0VA at 10 times the setting
(standard relay)
Contact arrangements (self reset)
2 normally open
or 1 normally open and 1 normally closed
Contact ratingsMake and carry continuously
1500VA A.C or 1500WD.C within limits of 660V and 3A.
Make and carry 8A for 3 seconds or 16A for 1 second
Break300VA A.C or 75W D.C (inductive L/R = 0.04)
within the limits of 250V and 5A
Wiring Diagrams
Typical Wiring Diagram for B37 Relay
Neutral Displacement Relay B37
The policy of Easun Reyrolle is one of continuous improvement and development. The company therefore reserves the right to supply equipment,
which may differ slightly from that described and illustrated in this publication.
Description
The relay comprises an attracted armature element fed via a
rectifier and series resistor. It can be provided with either a fixed
setting, or variable settings using a plug bridge. It has a minimum
withstand of rated voltage continuously.
Applications
Neutral displacement detection can be applied in either of the
following situations:
To initiate an alarm for a single phase to earth faulton an insulated neutral system
With such a system an earth fault on one phase will cause the
voltages on the other 2 phases to rise with respect to earth and
can reach the phase-to-phase voltage.
The relay is to be connected across a secondary open delta
winding of a 3 phase, 5 limb, voltage transformer which has the
primary star point earthed. The voltage across the open delta
secondary will rise from zero (or near zero depending on voltage
balance) to as high as 3 times the secondary winding voltage per
phase, e.g. 63.5V windings will produce up to 190V across the
relay for a phase to earth fault close to the VT. B37 relays are
rated to withstand this.
To effect tripping on earthed neutral systems.
When the upstream protection isolates an earth fault on a feeder
on a delta connected HV side of a power transformer, the
possibility remains of voltage rise on the two sound phases if
the feeder continues to be energized from the LV side of the
power transformer. The residual voltage of the feeder operates
the relay at the transformer end of the HV feeder and the relay
trips the LV circuit breaker. When the HV windings of the power
transformer are delta connected, or star connected with the
neutral not available, the neutral displacement protection requires
the same equipment as described for the first application above.
Ordering Information
• Rating
• Setting value or setting range
• Case style and size
Qualification
ISO 9001-2000
Note:
1. All dimensions are in mm
2. All dimensions are measured equidistant from centre line
3. Maximum depth of equipment inside panel : 200mm
PART CASE CUT OUT BEZEL
SIZE A B C D
01 2/3V 149.5 148 170 170
02 1V 221 148 243 170
Cutout Details When the HV windings are star connected with the neutral
available then the relay can be energized from a single phase
voltage transformer having its primary connected between the
neutral and earth.
Either scheme can be supplemented by a definite time delay
relay if required.
Cases
Single pole Modular size 4
Vedette 2/3V or 1V
Neutral Displacement Relay - B37
FACT
/B37
/08-
07/R
EV 1
®Easu
n R
eyro
lle-2
007 -
Easu
n R
eyro
lle,
the
Easu
n R
eyro
lle l
ogo a
nd a
ny
alte
rnativ
e ve
rsio
n t
her
eof
are
reg
iste
red t
rade
mark
s and s
ervi
ce m
ark
s of
Easu
n R
eyro
lle
Sales OfficesBangaloreEasun Reyrolle Ltd.#17/3 Arakere, Bannerghatta Road,Bangalore - 560 076, India.Tel: +91 80 26581023/3268Fax: +91 80 26580642Email: [email protected]
BhopalEasun Reyrolle Ltd.H.No.16, Essarjee HomesNear Gopal Nagar, Kalan RoadPiplani, Bhopal - 462 021, India.Telefax: +91 755 2684221Email: [email protected]
ChennaiEasun Reyrolle Ltd.6th Floor, Temple Tower, 672,Anna Salai, NandanamChennai - 600 035, India.Tel: +91 44 24346425/24347608Fax: +91 44 24346435Email: [email protected]
DelhiEasun Reyrolle Ltd.29/12, Ground Floor, East Patel NagarNew Delhi - 110 008, India.Tel: +91 11 25747321/25747322Fax: +91 11 25747320Email: [email protected]
KolkataEasun Reyrolle Ltd.4, Dr.Sundari Mohan Avenue, 5th FloorFlat No.18, Kolkata - 700 014, India.Tel: +91 33 22848320Fax: +91 33 22848326Email: [email protected]
MumbaiEasun Reyrolle Ltd.23, Kasturi Building, Jamshedji Tata RoadMumbai - 400 020, India.Tel: +91 22 22022270/22855415Fax: +91 22 22825703Email: [email protected]
SecunderabadEasun Reyrolle Ltd.#2, 1st Floor, Paradise ChambersOpp Hotel Ambassador1-7-196 Prender Ghast RoadSecunderabad - 500 003, India.Telefax: +91 40 27817847Email: [email protected]
CORPORATE OFFICEEasun Reyrolle Limited.,98 Sipcot Industrial ComplexHosur 635 126, India.Tel: +91 4344 401600/01/02Fax: +91 4344 276397
TURNKEY PROJECTSBUSINESS/AMR BUSINESS#389, “Rasukumaki”, HulimavuBegur Hobli, Bannerghatta RoadBangalore - 560 076, India.Tel: +91 80 40477200/ 201Fax: +91 80 40477202Email: [email protected]
HOSUR WORKS#98, Sipcot Industrial ComplexHosur - 635 126, India.Tel: +91 4344 401600/01/02Fax: +91 4344 276397
CENTRAL MARKETING &EXPORTS BUSINESS#17/3 ArakereBannerghatta RoadBangalore - 560 076, India.Tel: +91 80 26581023/3268Fax: +91 80 26580642Email: [email protected]
BANGALORE WORKS#17/3 Arakere, Bannerghatta RoadBangalore - 560 076, India.Tel: +91 80 26581023/3268Fax: +91 80 26580642Email: [email protected]
AUTOMATION BUSINESS#389, “Rasukumaki”, HulimavuBegur Hobli, Bannerghatta RoadBangalore - 560 076, India.Tel: +91 80 40477200/ 201Fax: +91 80 40477202Email: [email protected]
Corporate OfficeEasun Reyrolle Limited. 98 Sipcot Industrial Complex,
Hosur 635 126 India.Tel: +91 4344 401600/01/02
Fax: +91 4344 276397www.easunreyrolle.com