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Punch Grid Resistors

Price 15000 INR/ Piece

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MOQ : 1 Unit

Punch Grid Resistors Specification

Insulation Material
Mica / Ceramic

IP Rating
IP23 / IP54

Overheating Protection
Available on request (Thermal sensor/fuse)

Connector Type
Lug type / Terminal block

Humidity %
Up to 95% RH non-condensing

Efficiency
Up to 99% (Power Dissipation)

Shape
Rectangular

Surface Finish
Nickel Plated / Natural Finish

Power Factor
Not Applicable (Resistive Load)

Feature
High Power Dissipation, Corrosion Resistant, Shock Proof

Mounting Type
Floor or panel mounting

Operating Temperature
-20C to +375C

Product Type
Punch Grid Resistor

Application
To control and stabilize the output voltage by switching the load current on and off

Protection Level
IP23 or IP54 (optional)

Frequency (MHz)
50-60 Hertz (HZ)

Rated Voltage
Up to 1200V (customizable)

Energy Consumption
Depends on application and design power

Output Type
Resistive Load

Color
Metallic Silver / Grey

Dimension (L*W*H)
Custom as per power rating and application

Weight
As per design, typically ranges from 2 kg to 25 kg

Size
As per client specification

Input Voltage
Up to 1200V

Phase
Single or Three Phase

No Of Poles
Single or As per requirement

Material
High grade stainless steel / mica insulation

Connection Type
Bolt / Lug / Terminal

Insulation Resistance
> 1000 M at 500 V DC

Terminals
Brass / Copper with nickel plating

Grid Strip Thickness
1.5 mm to 6 mm

Shock Resistance
Withstand standard industrial vibration and shock

Vibration Resistance
Yes, as per IEC standards

Design Life
10+ years under rated load

Power Rating
Up to 500 KW or as per specification

Enclosure Material
Mild Steel / Aluminium / Stainless Steel

Resistance Range
0.5 Ohm to 200 Ohm (Customizable)

Cooling Type
Natural air cooled

Ambient Temperature
-20C to +60C

Test Voltage
2 kV AC for 1 minute

Temperature Rise
Within permissible limits as per IS standards

Standards
Designed as per IS 5553 / IEC 60146

Punch Grid Resistors Trade Information

Minimum Order Quantity
1 Unit

Supply Ability
100 Units Per Week

Delivery Time
1 Week

About Punch Grid Resistors

Punch Grid Resistors
Resistors are designed to meet requirements of both A.C. & D.C. applications. The basic types of resistors are stainless steel (Grade - 304) and punched steel resistors. These are manufactured for current rating from 10 to 800 Amps. Continuous resistors of higher ratings are manufactured using 2 or more parallel paths. Resistors with short time rating up to 3000 Amps or even more for neutral earthling are possible which suitable for system voltage up to 11 KV and above.

Applications:

E.O.T. cranes, rubber mills, steel mines, cement mills, power plants, conveyors, coke oven, blowers etc. for speed control and developing starting torques.

Dynamic breaking resistors for V.V.V.F.A.C Drives

Resistors are manufactured:

Air cooled type
Oil cooled type

Stainless steel grid resistors:

These resistors consists of stainless steel wires or strip in form of grids. The current rating generally ranges from 7 Amps to 400 Amps continuous with multiple or single paths.

Punched steel grids resistors:

The Resistors consists of grids punched from correction resisting nickel chromium alloy sheet steels. The punched steel grids are completely immune to shock vibration. They function reliably under the worst operating conditions and are particularly suited for steel mill duty. These resistors are available in wide range of current rating from 8 Amps to 800 Amps continuous with single & multiple parallel paths.

Versatile and Customizable Engineering

Punch Grid Resistors cater to a diverse set of requirements with customizable resistance values, power ratings up to 500 KW, and various enclosure materials. Each unit is tailored to client specifications, ensuring compatibility across applications and installation types-floor or panel-mounted. Their modular design allows adaptation for different phase configurations, voltage levels, and protection grades up to IP54.

Premium Materials and Robust Performance

Constructed from high-grade stainless steel with mica or ceramic insulation, these resistors are built for endurance, offering excellent shock and vibration resistance as per IEC standards. Nickel-plated brass or copper terminals enhance connectivity and corrosion resistance, while thermal sensors or fuses can be added for advanced overheating protection to ensure optimal safety and prolonged product life.

Compliant and Reliable for Demanding Conditions

Meeting IS 5553 and IEC 60146, Punch Grid Resistors withstand rigorous electrical and environmental testing-such as a test voltage of 2 kV AC and insulation resistance greater than 1000 M at 500 V DC. Operational from -20C up to +375C, these units achieve up to 99% efficiency and retain their integrity in high-humidity situations, assuring dependable voltage control and load management in critical applications.

FAQ's of Punch Grid Resistors:

Q: How are Punch Grid Resistors typically installed and where can they be used?

A: Punch Grid Resistors can be floor or panel mounted, making them versatile for integration into various industrial setups. They are widely used in applications requiring precise control and stabilization of output voltage, including power generation, distribution, and heavy-duty industrial machinery.

Q: What customization options are available for these grid resistors?

A: Customers can specify resistance values (0.5 Ohm to 200 Ohm), power ratings (up to 500 KW or as required), dimensions, terminal types (brass/copper, lug or terminal block), mounting type, enclosure material, IP protection level (IP23 or IP54), and more, ensuring the product fits the exact application needs.

Q: What benefits do Punch Grid Resistors offer compared to standard resistors?

A: These resistors provide high efficiency (up to 99%), robust shock and vibration resistance, superior thermal performance, and long design life over 10 years at rated load. Their corrosion-resistant materials and customizable features make them exceptionally reliable in harsh environments.

Q: When should overheating protection be considered for these resistors?

A: If operating in conditions with significant temperature fluctuations or high power dissipation, incorporating overheating protection, such as thermal sensors or fuses (available on request), is recommended to safeguard both equipment and personnel.

Q: What processes are followed to ensure product quality and compliance?

A: Each Punch Grid Resistor undergoes stringent quality checks, including high-voltage testing at 2 kV AC for 1 minute, insulation resistance verification, and compliance with IS 5553 and IEC 60146. Vibration and shock tests are also conducted to ensure reliability.

Q: How do these resistors contribute to system safety and reliability?

A: With robust construction, high insulation resistance, and the option for advanced protection features, these resistors prevent excess voltage and current surges, helping maintain stable and secure operation of connected electrical systems.

Q: What is the typical lifespan and maintenance requirement of these resistors?

A: Designed for over 10 years of service under rated loads, Punch Grid Resistors require minimal maintenance. Periodic inspection for dust accumulation and terminal condition is sufficient to keep them functioning optimally in demanding industrial settings.

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