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7/25/2019 Completely Self Protected Distribution (CSP)
Transformers
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Completely SelfProtected Distribution
(CSP) TransformersTranscon Industries
India
[email protected]
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Transformers
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Transcon Industries, India28-4-2011
What is CSP?
Circuit
Breaker
OperatingHandle
Signal Light
Indicator
55% Free
Space for Oil
Expansion
Surge
Arrestor
HT
Fuse
Link
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Transformers
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Transcon Industries, India28-4-2011
Why CSP?
Protects the transformer from externalfaults
Protects the grid from internal faults
Dramatically reduces failure rate for theutility
Reduces risk of explosion Low maintenance
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Transformers
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Transcon Industries, India28-4-2011
Reasons for Transformer Failure
Long Low Voltage Lines Short Circuit Due To Clashing of
Loosely
Strung Conductor, LV System
Changing Weather Conditions
Overloading
Lightening Strikes Manufacturing Defects
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Transformers
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Transcon Industries, India28-4-2011
What Does CSP Transformers
Protect?
Resistant overloads not protected byconventional switchgear
Lightening Surges
Short Circuit Faults in Secondary
Thermal overload due to increase in oil
temperature Over current protection
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7/25/2019 Completely Self Protected Distribution (CSP)
Transformers
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Transcon Industries, India28-4-2011
What are CSP Components?
Internally Mounted Circuit Breaker
Internal Fuselink
Lightening Arrestor
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Transformers
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Transcon Industries, India28-4-2011
Circuit Breaker Central component of CSP protection
package Provides over current protection
Tamper proof (mounted internally)
Thermally operated Responds by opening the circuit to
external faults or over current
Service can be easily restored by re-
closing the breaker Indication through signal lamp on
continuous overload or tripping
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Transformers
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Transcon Industries, India28-4-2011
Fuse-Link
Internally Mounted (Tamper Proof)
Isolates the system from the faulty transformer
Rating is selected such that fuse does not blow
for secondary or transient faults Connected in series with the
HV Winding
Protects the transformer from major fire by
isolating the circuit due to internal faults Prevents nuisance
tripping at feeder level due to
faulty transformer
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Transformers
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Transcon Industries, India28-4-2011
Surge Arrester
Mounted to transformer tank instead ontop of the structure
Metal oxide type
Non-Linear resistors which acts asconductors at high voltages
and resistorsat low voltage
Eliminates cost of installation and cost ofmounting structure
for the arrester
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Transformers
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Transcon Industries, India28-4-2011
Saves Money Too!
How? Increases life of transformer
Where adapted, transformer failures have fallendramatically (20%
per year to 3% per year)
Reduces risk of public hazard through explosion asfaults are
isolated
Total cost of ownership of life of transformer is far
lower than conventional transformer Increase revenues by
reducing outages of power
caused due to faulty transformer on the system
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7/25/2019 Completely Self Protected Distribution (CSP)
Transformers
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Transcon Industries, India28-4-2011
Conclusion
Adapted in USA, Mexico, Brazil, India Recently adapted by
Nigeria
The best tamper proof protection solution
available for distribution transformers
Available for ratings upto 315KVA
Questions Contact: Amar Pal Gampa, [email protected],
+91 9440384449
mailto:[email protected]:[email protected]
