USD
EUR
GBP
CAD
AUD
CHF
HKD
JPY
RUB
BRL
CLP
NOK
DKK
SEK
KRW
ILS
MXN
CNY
SAR
SGD
NZD
ARS
INR
COP
AED
Home
Products
Residual Current Sensor
Flexible Rogowski coil
Split Core Current Transformer
Current Transformer
Three phase CT High Voltage Current Transformer
Indoor current transformer Outdoor current transformer Indoor voltage transformer Outdoor voltage transformer
Protection Current Transformer
Current transducer
Mini Current Transformer
Combined Current Transformer Loading-Type Current transformer Bus Bar-Type Current transformer Pin-type Current Transformer Current-Voltage Transformer DC Immune CT Voltage Power Transformer Zero-Sequence Current Transformer Special Current Transformer
Current Sensor
Closed Loop Hall Effect Current Sensor DC leakage current sensor Hall Effect Current Transmitter Hall Effect Voltage Sensor & Transmitter Open Loop Hall Effect Current Sensor
Shunt
Zero Sequence CT
Indicator meter
Transformer
Others
Digital Meter
digital current meter COS meter Power_meter Energy meter Combined meter Multifunction meter Frequency meter digital voltage meter Transducers
Insulator
SE Type SM Type ASM Type AB Type JYZ Type JYZ Type MNS Type LY Type C Type CT Type CJ/CB EL Type DL Type C/GP/L HC Type PMJ Type GCK Type PMJ Type PMJ-N Type XP ZMJ Type SGR Type AMJ Type
Inverter Controller Voltage Stabilizer
SBW/DBW Automatic compensated power voltage stabilizer SBW-F Sub-tone automatic compensation power voltage stabilizer SVR Automatic AC home voltage stabilizer SVC/TND single-phase high-precision automatic AC voltage stabilizer TSD wall-mounted automatic AC voltage regulator SVC/TNS three-phase high-precision automatic AC voltage stabilizer
Meter Socket Smart Circuit Breaker
Case
Case Example
Download
About Us
Contact Us
Contact Us
News
Company News
Industry News
Technical Standard
Feedback

Why is a current transformer used in a substation?

Views : 6252
Update time : 2022-08-24 13:36:50

Current Transformers, used in Sub-Station mainly serve two purposes:

  1. Measuring purpose: This type of CT used for measuring current. This Current Transformers step-down the current based on its ratio (like 1000-800-400 to 1 Amp.) so that reduced current can be measured in meter. During fault, CT primary current increase to kilo-Amp range (like 31.5 KA, 40KA etc.) but due to saturation of core secondary current remains same I.e., 1 Amp and meters/measuring devices stay protected.
  2. Protection purpose: Core of this type of CT does not saturate during fault/overloading and secondary current increases based on type of faults so that relay senses fault for tripping of circuit breaker. During rated primary current condition CT gives rated secondary current ( 1 amp).
Previous :
Related News
Read More >>
Middle East Energy Dubai 2025: Powering the Future of Energy Solutions Middle East Energy Dubai 2025: Powering the Future of Energy Solutions
Apr .26.2025
Wenzhou Heyi Electric at the 2025 Russia Electric & Electronics Exhibition: A Showcase of Innovation & Opportunity Wenzhou Heyi Electric at the 2025 Russia Electric & Electronics Exhibition: A Showcase of Innovation & Opportunity
Apr .24.2025
Zero-Sequence Current Transformer: The Guardian of Power System Safety Zero-Sequence Current Transformer: The Guardian of Power System Safety
Apr .19.2025
Current Transformers: Essential Components in Power Systems Current Transformers: Essential Components in Power Systems
Apr .17.2025