Summation Current Transformer (Summation CT) Resin Cast Type

About Summation Current Transformer (Summation CT) Resin Cast Type

A Summation Current Transformer (CT) is an instrument transformer designed to combine the secondary currents from two or more main Current Transformers into a single standardized secondary output. The product shown has separate input terminals marked 1P11P2 and 2P12P2, with S1S2 as the common secondary output. This configuration allows currents from multiple feeders or CTs to be summed and supplied to a single measuring or protection device. Summation CTs are commonly used where multiple current inputs need to be consolidated for centralized metering, monitoring, or protection. The resin-cast construction provides electrical insulation and a compact, robust design suitable for panel and industrial applications. A typical summation CT can be specified according to the required input combination and output ratio, such as 5+5/5 A; the exact ratio must be confirmed from the product nameplate/datasheet.

Key Product Details

• Product Type: Summation Current Transformer
• Construction: Resin Cast / Insulated enclosure
• Inputs: Multiple CT secondary inputs
• Terminals shown: 1P1, 1P2, 2P1, 2P2
• Output: S1, S2
• Function: Combines secondary currents from multiple CTs into one output
• Application: Metering, monitoring and protection systems
• Mounting: Panel/Base mounting
• Typical secondary output: 1 A or 5 A, depending on specification
• Frequency: Commonly 50 Hz for Indian electrical systems, but the exact model should be verified from its datasheet. Powertech's published CT specifications list 50 Hz.
  
  

  Sl. No.	Parameter	Specification
  1	Type	Summation Current Transformer, Resin Cast
  2	Standards	IS: 2705 (Part IIV) / IEC 61869-2
  3	System Voltage	415 V (LT Application)
  4	Ratio	5+5 / 5 A
  5	Core	Single Core
  6	Accuracy Class	Class 1.0 (or as per requirement)
  7	Burden	5 VA (typical)
  8	Dimensions (L W H)	90 80 50 mm
  9	Frequency	50 Hz 5%
  10	Continuous Thermal Current	1.2 rated current
  11	Short Time Current	As per IS: 2705
  12	Instrument Security Factor	5
  13	Construction	Resin Cast, robust insulation
  14	Terminals	Electrolytic copper, screw-type with terminal cover
  15	Mounting	Suitable for panel / base mounting
  16	Insulation Class	Class E / B
  17	Ambient Temperature	10C to +55C
  18	Service Conditions	Indoor, suitable for tropical climate
  19	Markings	As per IS: 2705 (Ratio, VA, Class, Serial No., Year, IS marking)
  20	Routine & Type Tests	As per IS: 2705 (Polarity, Ratio, Burden, Accuracy, Dielectric, etc.)

  FAQs of Summation Cts Current Transformers:

  
  

  Q: How does a Summation CTS Current Transformer function in industrial setups?

  A: The Summation CTS Current Transformer works by combining currents from multiple feeders, providing a single output for simple and accurate monitoring in three-phase industrial applications.
  
  

  Q: What benefits does the 1-year warranty provide for users?

  A: The 1-year warranty ensures peace of mind, covering manufacturing faults and guaranteeing reliable support should maintenance or replacement become necessary during operational use.
  
  

  Q: When is it necessary to use Summation CTS Current Transformers?

  A: Summation CTS Current Transformers are ideal when managing aggregated loads in industrial facilities, especially where simplified current monitoring and control of multiple circuits is crucial.
  
  

  Q: Where can these transformers be exported and supplied?

  A: We export and supply Summation CTS Current Transformers mainly to Asia and the Middle East, leveraging efficient logistics channels via Indias major FOB port for timely deliveries.
  
  

  Q: What is the usual process for redeeming the warranty on the transformer?

  A: To redeem the warranty, contact our after-sales support with purchase details and product serial number. We will evaluate and facilitate repair or replacement under warranty terms.
  
  

  Q: How can the transformer be used for energy auditing?

  A: By consolidating currents from multiple sources, the transformer simplifies measurement, making it invaluable for energy auditing and tracking consumption across large industrial installations.