Narayan Powertech Pvt. Ltd.

Padra, Vadodara, Gujarat

Narayan has a range of Bushing CTs Indoor- Taped, plastic cased and potted and resin casted as well as Outdoor- SS cased and resin potted and resin casted, outline electrical parameters are as below:

• Primary current rating up to 20, 000 Amps.
• Secondary current rating of 1 Amps, 2 Amps (for WTI application), 5 Amps, 0.577 Amps (or any relay feed current value) or custom specified
• Burden value up to 50 VA (IEC 60044, IS 2705)
• Accuracy class up to 0.1 for metering (IEC 60044, IS 2705), up to 10P, 15P for relaying/protection (IEC 60044, IS 2705), 0.1 for metering (ANSI C 57.13) and up to C
• 200 for relaying (ANSI C 57.13).
• Special accuracy class like class PS (IS 2705)/PX (IEC 60044) with specific values of Vk and Imag.
• Special application CTs like Core balance, Interposing, Summation to specific requirements.

Narayan has a full range of MV VTs-Indoor as well as Outdoor, outline electrical parameters are as below:

• Up to 36 kV system voltage application.
• Primary voltage rating up to 37500 volts
• Secondary voltage of 100V, 110V, 120 V or custom defined
• Multi winding VTs up to 3 windings possible, Open delta winding possible
• Burden value up to 200 VA (IEC 60044, IS 3156) or more.
• Thermal burden of up to 3kVA possible
• Accuracy class up to 0.1 for metering (IEC 60044, IS 3156), up to 10P, 15P for

• Different Ratios with primary rating up to 20000 Amps
• Can be wound type, bar type or window type
• Multi ratio with tapings on primary or secondary
• Special electrical/mechanical/mounting needs possible
• For up to 40 kA 3 seconds STC rating
• Secondary Terminals can be brass/copper studs/terminals (8-32/10-32)with hardware
• Primary terminals can be copper pads/studs with metric/unc threads suitable for primary current capacity
• Insulation level Up to 36 kV; BIL 170kVp
• Frequency 50 - 60 Hz
• Outer Encapsulation Epoxy/Poly-urethane casted
• Thermal Rating up to 2.0 @ 30C ambient, 1.5 @ 55C ambient

• Different Ratios with primary rating up to 6000 Amps
• Dead tank or Live tank type
• Multi ratio with tapings on secondary
• Special electrical/mechanical/mounting needs possible
• For up to 40 kA 3 seconds STC rating
• Secondary Terminals can be brass/copper studs/terminals (8-32/10-32)with hardware housed in IP63 terminal box
• Primary terminals can be copper rod/bar with metric/unc threads suitable for primary current capacity
• Insulation level Up to 36 kV; BIL 170kVp
• Frequency 50 - 60 Hz
• Outer Encapsulation Aluminum/SS/MS tank housed
• Thermal Rating up to 2.0 @ 30C ambient, 1.5 @ 55C ambient

Metal clad Voltage Transformers are single pole insulated and casted with epoxy resin for indoor application The resin body is covered with a grounded metallic box.

The high voltage end of the primary winding can be provided with silicone cone for specific plug in connection.

The VTs are suitable for installation in or outside switchgear/panel. The secondary terminals are integrated in resin body and protected with cover.

• Compact design and less space requirement
• Safe to touch due to grounded body
• No maintenance
• Simple for assembly

• Indoor Designs for use in Medium Voltage Switchgear.
• Outdoor design available on request.
• 5 kV to 25 kV Class.
• 60 to 150 kV BIL.
• Up to 15 kVA Single Phase and Three phase.
• Vacuum Cast using Epoxy Resin.
• Horizontal & Vertical Mounting on some Models.
• Designed to meet ANSI, IEC, IS.
• Typical applications include MV Switchgear, MV Motor Control & Generator / Transformer Neutral Grounding.

Narayan has a full range of MV CTs -Indoor as well as Outdoor, outline electrical parameters are as below:

• Up to 36 kV system voltage application.
• Primary current rating up to 20, 000 Amps.
• Secondary current rating of 1 Amps, 5 Amps, 0.577 Amps (or any relay feed current value) or custom specified.
• Multi core CTs up to 5 cores or more.
• Burden value up to 50 VA (IEC 60044, IS 2705) or more.
• Accuracy class up to 0.1 for metering (IEC 60044, IS 2705), up to 10P, 15P for relaying/protection (IEC 60044, IS 2705), 0.1 for metering (ANSI C 57.13) and up to C 800 for relaying (ANSI C 57.13).
• Special accuracy class like class PS (IS 2705)/PX (IEC 60044) with specific values of Vk and Imag., PR Class, TPS, TPX, TPY and TPZ

• Different Ratios with primary rating up to 20000 Amps
• Can be wound type, bar type or window type
• Multi ratio with tapings on secondary
• Special electrical/mechanical/mounting needs possible
• For up to 40 kA 3 seconds STC rating
• Secondary Terminals can be brass/copper studs/terminals (8-32/10-32)with hardware housed in IP63 terminal box
• Primary terminals can be copper bar with metric/unc threads suitable for primary current capacity
• Insulation level Up to 36 kV; BIL 170kVp
• Frequency 50 - 60 Hz
• Outer Encapsulation Cyc-aliphatic/HECP casted
• Thermal Rating up to 2.0 @ 30C ambient, 1.5 @ 55C ambien