Power Quality Solutions

Key Features

• Suitable for system voltages up to 33 kV (depending on design and application).
• Available in Resin Cast and indoor or outdoor constructions which are maintenance free, compact & durable.
• Multicore PT provides uses for different applications.
• Provides Metering, monitoring and Protection cores available to use with meter and relay operation as well as use as aux. control supply source.
• Accuracy classes available for both Protection (3P/6P) and Metering (0.2/1.0) applications.
• Maintain precise ratio and phase angle for reliable metering and billing, especially in utility and industrial applications
• Weatherproof construction with IP55/IP65 enclosure options for outdoor installations.
• Provides excellent insulation, mechanical strength, and moisture resistance.
• Provide galvanic isolation between high-voltage circuits (Primary) and low-voltage (secondary) measuring or control equipment ensuring safety of operator.

Principle of Operation

These PTs are step down high primary voltages (hundreds or thousands of volts) to a safe, measurable level (110V) for meters and instruments. PTs are supply accurate voltage signals to protective relays, enabling them to detect faults like under voltage, over voltage, negative sequence voltage fault by sensing voltage from primary side.

Typical Applications

• Metering cubicles for energy monitoring in substations and industrial plants.
• Protection relays in switchgear or control panels.
• Substation protection schemes.
• Generator and transformer backup protection.
• Monitoring voltage for system optimization.
• Scada integration for remote supervision and control.

Technical Specification

APIL Value Proposition

The VT manufactured by Akanksha Power & Infrastructure Ltd. combines excellent insulation, mechanical strength, and moisture resistance and maintain precise ratio and phase angle for reliable metering and billing, especially in utility and industrial applications

Marketing Pitch

"APIL's Voltage Transformer (VT) provides galvanic isolation between high-voltage circuits (Primary) and low-voltage (secondary) measuring or control equipment with high accuracy, precise ratio and phase angle ensuring safety of operator up to 33 kV."

Key Features

• Suitable for system voltages up to 33 kV (depending on design and application).
• Available in Resin Cast (Indoor/Outdoor) and Oil-Cooled Outdoor constructions.
• Uses a 3-Phase, 5-Limb CRGO Core to avoid magnetic saturation during earth faults.
• Provides a Residual (Tertiary) Open-Delta (V-V) Winding for zero-sequence voltage detection.
• Accuracy classes available for both Protection (3P/6P) and Metering (0.5/1.0) applications.
• Weatherproof construction with IP55/IP65 enclosure options for outdoor installations.
• Optional ferro-resonance suppression resistors for improved system reliability.

Principle of Operation

During normal system operation, the vector sum of the three phase voltages is nearly zero. When a single-phase-to-earth fault occurs, a residual voltage develops. The RVT detects this residual voltage through its open-delta winding and supplies the signal to protection relays such as:

• 59N – Neutral Overvoltage Relay
• 64 – Ground Fault Protection Relay
• Directional Earth Fault Relays (DEF)

Typical Applications

• Earth fault detection in ungrounded and resonant-grounded systems.
• Neutral displacement monitoring.
• Substation protection schemes.
• Generator and transformer backup protection.
• Zero-sequence voltage measurement.
• Voltage indication during maintenance and line isolation.

Technical Specification

APIL Value Proposition

The RVT manufactured by Akanksha Power & Infrastructure Ltd. combines robust 5-limb core design, high insulation reliability, and utility-grade protection performance. It is suitable for utilities, transmission companies, DISCOMs, renewable energy plants, and industrial substations requiring dependable earth-fault monitoring and protection.

One-Line Marketing Pitch

"APIL's Residual Voltage Transformer (RVT) provides precise zero-sequence voltage detection for reliable earth-fault protection, ensuring enhanced safety, system stability, and uninterrupted power supply in medium-voltage networks up to 33 kV."

Key Features

• High peak current capability which handles extremely high discharge currents (often several kA) without degradation.
• Low Equivalent Series Resistance (ESR) and Equivalent Series Inductance (ELR) which ensures minimal energy loss and fast pulse response.
• Typically ranges from 1 kV to 100 kV depending on application.
• Uses polypropylene for high dielectric withstand and low losses.
• Can withstand millions of charges–discharge cycles without failure.
• Container of pulse capacitors are of stainless steel.
• Highly used for impulse test setup & pulse power system.

Principle of Operation

The pulse capacitor operation principle is rapid energy storage and instantaneous discharge. It is designed to accumulate electrical energy over a short charging period and release it in a powerful, controlled pulse when triggered which enabling high-energy bursts for applications like radar, lasers, and pulsed power systems.

Typical Applications

• High-voltage experiments labs, impulse testing, fusion research and particle physics labs.
• Use in defence services like Radar, pulsed lasers and electromagnetic weapons.
• Plasma generation, welding, and particle accelerators.
• Use in medical equipment like MRI machines, defibrillators and X-ray systems.
• Can be use as short-term storage for rapid energy release.
• Use in civil, defence, medical, commercial applications.

Technical Specifications (Typical)

APIL Value Proposition

The Pulse capacitor manufactured by Akanksha Power & Infrastructure Ltd. Using polypropylene film immersed in non-PCB oil for high dielectric withstand and low losses which can withstand numbers of charges–discharge cycles without failure.

Marketing Pitch

"APIL's Pulse Capacitors delivering precision pulse with withstand capacity of multiple high energy charge discharge operations and enhance the equipments used in various crucial sectors ."

Key Features

• Surge Capacitor unit is designed up to system of 33kV (designed as per requirement)
• The low inductance design ensures fast response to high-frequency transients.
• Designed at Tan delta ≤ 2 x 10^-4
• Limits steep voltage wavefronts during switching or lightning surges which gives transient suppression.
• Provides fast transient response and voltage stabilization.
• Provided with external fuse design and stainless-steel case.
• Use dead soft annealed electrode and polypropylene for high withstand capacity.
• Non-Self-healing design with oil impregnated.
• Natural air-cooled design and temperature category up to -25/D.
• Suitable for indoor and outdoor applications.

Principle of Operation

A surge capacitor operates on the principle of transient voltage absorption and waveform smoothing. It works by momentarily storing the surge energy and releasing it gradually, thereby protecting connected equipment from steep voltage spikes caused by switching or lightning.

Typical Applications

• Protects against voltage spikes during opening and closing operation of vacuum switch or breaker.
• Prevents insulation of motors and generators damaging from switching surges.
• Reduce transient stresses on transformer windings.
• Enhances protection and reliability of medium-voltage switchgear and APFC panels.
• Use at substations and power plant for surge protection due to lightning.

Technical Specifications

APIL Value Proposition

The Surge capacitor manufactured by Akanksha Power & Infrastructure Ltd. As per the customer requirement and application, highly used for protecting connected equipment from steep voltage spikes caused by switching or lightning.

Marketing Pitch

"APIL's surge capacitors provides shield to system for switching transient, voltage spikes and protect equipment's like motor, generator, transformer, capacitors connected in the system."