INSTRUMENT TRANSFORMER

1. Medium Voltage Instrument Transformers

CURRENT TRANSFORMER

  • Indoor resin casted type
  • Outdoor resin casted type
  • Outdoor oil Insulated type
  • Combined CTVT unit

VOLTAGE TRANSFORMER

  • Indoor resin cast
  • Outdoor resin casted type
  • Outdoor oil insulated type.

2.Low Voltage Instrument transformer

  1. CURRENT TRANSFORMER
  2. VOLTAGE TRANSFORMER

3. Epoxy resin cast Components

1. Medium Voltage Instrument Transformers

CURRENT TRANSFORMER

Indoor Resin casted type / Outdoor resin casted type

  • Different Ratio with primary rating up to 4000Amp.
  • CT can be Wound type, bar type or Window type.
  • Multi ratio with tapings on primary and secondary side.
  • For up to 44kA for 3 sec STC rating
  • Mounting needs possible.
  • Insulation level Up to 36kVp, BIL 195kVp
  • Secondary terminal brass M6 x 30mm
  • Primary Terminal copper /bar / standard as per customer requirement.
  • Frequency 50/60 Hz.
  • For metering class CT 1,0.2,0.2s,0.5,0.5s,1.0,3.0,5.0
  • For Protection Class CT 5P10,10P10,5P15,5P20,10P10,10P20
  • For Special protection class requirement form customer VK, RCT, Ie value details
  • Reference standard All national/International standard.

Outdoor oil Insulated type

  • Different Ratio with primary rating up to 5000Amp.
  • CT can be Live Tank/Dead tank
  • Multi ratio with tapings on primary and secondary side.
  • For up to 44kA for 3 sec STC rating
  • Mounting needs possible.
  • Insulation level Up to 36kVp, BIL 195kVp
  • Secondary terminal brass M6 x 30mm
  • Primary Terminal copper /bar / standard as per customer requirement.
  • Frequency 50/60 Hz.
  • For metering class CT 1,0.2,0.2s,0.5,0.5s,1.0,3.0,5.0
  • For Protection Class CT 5P10,10P10,5P15,5P20,10P10,10P20
  • For Special protection class requirement form customer VK, RCT, Ie value details
  • Reference standard All national/International standard.

VOLTAGE TRANSFORMER

Unitrans has a full range of MV VTs as Indoor as well as outdoor Application, as per below parameter.

  • Up to 36Kv system voltage application
  • Primary voltage rating Up to 37500 Volts
  • Insulation level Up to 36kVp, BIL 195kVp
  • Secondary voltage 63.5V, 100V,110V,120V or customer defined.
  • Multi winding VTs up to 3Winding and open delta if customer required.
  • Buden value up to 200VA
  • Accuracy class 0.1,0.2,.0.5,1.0,3P,5P
  • Reference standard All national/International standard.

OUTDOOR Voltage transformers

Outdoor voltage oil type Transformer.

Medium Voltage Instrument Transformers Combined CTVT unit

  • Application outdoor
  • Primary voltage rating Up to 37500 Volts
  • Insulation level Up to 36kVp, BIL 195kVp
  • Frequency 50/60 Hz
  • CT specification
  1. Rated Primary current up to 3000A
  2. Rated Secondary current 1A and 5Amp
  3. Accuracy class 0.1,0.2,0.2s,0.5,0.5s,1.0,3.0,5.0
  4. Rated Burden up to 30VA, (As per Customer Requirement)
  • PT specification
  1. Rated Primary Voltage up to 33000v
  2. Rated Secondary Voltage 110/RT3V,110/3 V, 110V (As per Customer Requirment)
  3. Accuracy class 0.1,0.2,,0.5,,1.0,3.0,5.0
  4. Rated Burden up to 200VA, (As per Customer Requirement)
  5. Protection class 3P,5P and 6P
  • Class of Insulation A
  • Type of Earthing One End Earthed Type (E-N)/ Unearthed Type (U-N)
  • Reference standard All national/International standard.

2. Low Voltage Instrument transformer

Current Transformer

  • Can be resin casted, plastic cased or tape insulated
  • Different Ratios with primary rating up to 20000 Amps
  • Can be wound type, bar type or window type
  • Application: Metering and Relay application.
  • Secondary Terminal – Single or Multiple
  • Internal Diameter – 30 to 250 mm.
  • Outer Diameter – 50 to 500 mm.
  • Primary Current – 50 to 5000 Amperes
  • Secondary Current – 1 or 5 Ampere
  • Accuracy Class-    B0.1 to B1.8
  • 2s,0.2,0.5s,0.5,1.0,3.0,5.0
  • Frequency – 50/60 Hz/ 50 Hz
  • BIL – 415-1100 Volts / 10 kV full wave.
  • As per International Standard Indian Standard/Internal standard.

VOLTAGE TRANSFORMER

  • Primary voltage rating up to 1100 volts
  • Secondary voltage of 27V, 63V, 100V, 110V, 120 V or custom defined
  • Multi winding VTs up to 3 windings possible
  • Burden value up to 200 VA (IEC 60044, IS 3156) or more.
  • Thermal burden of up to 1kVA possible
  • Accuracy class up to 0.1 for metering (IEC 60044, IS 3156), up to 3P, 5P for relaying/protection (IEC 60044, IS 3156), 0.1 for metering (ANSI C 57.13) and Class W, X, M, Z (ANSI C 57.13).

3. Epoxy resin cast Components

  • Insulation Level Up to 36kV; BIL 170 kVp
  • Outer Encapsulation Epoxy resin
  • Mechanical Loads To customer requirements
  • Electrical Characteristics Tested for HV, PD and Impulse with traceable serial numbers
  • Custom Options (contact us) Contacts can be copper, Aluminum, Brass and MS (for Insulators and VDI) VDI available with Phase comparator or auxiliary contacts Shrouds, Spouts to customer drawing Special bushings for RMU application
  • Range capabilities LV insulators and MV insulators for panel applications
  • LV Bushings
  • MV bushings for panel applications
  • MV wall through bushings
  • Assemblies
  • Spouts and bus bar supports
  • Secondary connection plate with through wires or inserts
  • We can design and manufacture as per customer requirements.