Viat Instruments Pvt. Ltd

Salt Lake, Kolkata, West Bengal

GAS ACTUATED RELAY (Buchholz Relay)With Magnetic Reed Switch for Oil Filled Transformers

Mounting dimensions and test parameters to DIN standard.

Aluminum alloy housing.

Functional test of alarm and trip contact possible even without filling the relay with oil

Unique internal design of housing prevents false air traps on top of the relay

Well designed internal layout gives clear view of colour of gas inside the relay through glass window for fault analysis.

Bucket type float design with inherent ability to withstand vacuum treatment of transformers

Built in test facility for checking continuity of both alarm and trip circuits

Anti vibration mounting pads and magnetic switches gives high stability against mechanical shocks and vibrations.

BIMETAL THERMOMETER AND PRESSURE VACUUM GAUGE For Oil Filled Distribution Transformers

Bimetal Thermometer without contacts - vertical mounting on top coverDial Size: 80mm and 100mm Bimetal Thermometer without contacts - horizontal mounting on side wall of transformerDial Size: 100mm Bimetal Thermometer with maximum pointer, trip contact and alarm. Vertical mounting/horizontal mounting models available. Pressure Vacuum Gauge without contacts.Thread size 1/4" NPT Pressure Vacuum Gauge with contacts.Thread size G 1/2"

MAGNETIC OIL LEVEL GAUGESWith Contacts for Oil Filled Distribution & Power Transformers

Magnetic Oil Level Gauge with radial float movement and plug in connectionDial Size - 3.5" (100mm) and 6" (150mm)

Magnetic Oil Level Gauge with radial float movement and terminal box connectionDial Size - 3.5" (100mm) and 6" (150mm)

Magnetic Oil Level Gauge without contacts, with radial float movementDial Size - 3.5" (100mm)

Magnetic Oil Level Gauge with radial float movementDial Size - 100mm and 140mm

Magnetic Oil Level Gauge with axial float movementDial Size - 100mm and 150mm

Magnetic Oil Level Gauge for conservator with air bagDial Size - 150mm

Magnetic Oil Level Gauge with axial float movement suitable for conservator with air bag Dial Size - 250mm

RADIATOR THROTTLE VALVES For Oil Filled Transformers

Pad Lockable, Forged Steel BodySize : 80mm

Bolt On Type, Pad Lockable, Forged Steel BodySize : 80mm

Bolt On Type, Economy Model with Cast Iron BodySize : 80mm

Welding Neck Type, Pad Lockable, Forged Steel BodySize : 80mm

Zero Leakage, Bolt On Type with Aluminum Body, Size : 80mm

Zero Leakage, Welding Neck Type, Steel BodySize : 125mm (5 inch)

Zero Leakage, Flange Type, Steel BodySize : 125mm (5 inch)

Zero Leakage, Bolt On Type, Pad Lockable, Forged Steel BodySize : 80mm

LIQUID LEVEL INDICATORSFor Oil Filled Distribution Transformers

Oil Level Indicators

Square Flange Type Level Indicators

Magnetic Type Oil Level Indicators for hermetically sealed transformers

Vertical Protection Relay for hermetically sealed transformers

RAPID PRESSURE RISE RELAY (RPRR)Model 950 and 960 Series

Features

Fast and accurate response to sudden increase in pressure.

Can operate in as less as ten milliseconds

Shock and vibration resistant.

Each Relay individually calibrated using sophisticated electronic setup

Online computerized graph with every certificate for operating time against various rates of pressure rise.