The three phase squirrel cage induction motors are applied together with the centrifugal pump
motors in irrigation and water management. These motors are designed to handle continuous
operation in demanding field conditions and support stable performance. They have a strong
built quality and require low maintenance. The motors work efficiently under varying loads and
thus make it a dependable choice for farmers for an uninterrupted water supply.
The IS 7538: 1996 standards set by the Bureau of Indian Standards provide consistency in
terms of quality and operation of the motors. This standard mentions requirements related to
material used, design parameters, performance criteria, and testing methods. Manufacturers
must get a certificate from BIS to sell the Centrifugal Pump Motors to the Indian customers.
What is IS 7538: 1996?
This is the Indian Standard for Agricultural Motors used in pumps, which defines performance,
construction, and efficiency of motors operating in irrigation areas. This standard is set by the
BIS (Bureau of Indian Standards) to ensure that product quality and safety are met, and the
motors are
- Tested for performance and efficiency
- Made with compliant electrical materials
- Designed for continuous duty during long irrigation cycles
- Built with proper insulation and cooling systems
Who Requires Squirrel Cage Motors BIS Certification?
BIS certification under IS 7538: 1996 is required for businesses involved in manufacturing,
importing, or supplying Centrifugal Pump Motors in India.
Applicable to:
- Manufacturers (India): Must get BIS certification if the motors are covered under QCO.
- Foreign Manufacturers - Need certification to export the product to India.
- Importers/Brand Owners - Must ensure that the products are BIS certified before
selling.
- Sellers/Distributors - Should only sell certified three-phase pump motors.
Testing and Inspection Requirements
To ensure the premium quality, safety needs, and adequate performance of Agricultural Pump
Motors, the standard set by the Bureau of Indian Standards (BIS) defines proper testing and
inspection requirements during manufacturing.
What is R and S?
- R (Required): Test must be conducted in the manufacturer’s in-house laboratory
- S (Subcontracting Allowed): Test can be conducted in a BIS-recognized or
NABL-accredited external laboratory
Electrical & Routine Tests
- Voltage & Frequency Variation Test (R) - Ensures motor operates under supply
fluctuations
- No Load Test (R) - Verifies motor performance without load
- Locked Rotor Test (R) - Checks starting current and torque characteristics
- Reduced Voltage Running Test (R) - Ensures smooth starting at low voltage
- Stator Resistance Measurement (R) - Verifies winding resistance values
Insulation & Safety Tests
- Insulation Resistance Test Before HV (R) - Ensures insulation integrity before stress
- High Voltage Test (R) - Verifies dielectric strength of insulation
- Insulation Resistance Test After HV (S) - Confirms insulation reliability post testing
- Earthing Provision Check (R) - Ensures proper grounding for safety
Performance & Efficiency Tests
- Full Load Test (S) - Determines efficiency, power factor, and slip
- Reduced Load Efficiency Test (S) - Verifies performance at partial loads
- Overload Test (S) - Ensures motor can handle excess load conditions
Thermal & Endurance Tests
- Temperature Rise Test at Rated Voltage (S) - Checks heating under normal operation
- Temperature Rise Test at Reduced Voltage (S) - Evaluates thermal performance at
low voltage
Mechanical & Construction Tests
- Dimensional Verification Test (S) - Ensures compliance with standard dimensions
- Terminal Box & Marking Check (R) - Verifies proper connections and identification
Optional / Advanced Tests
- Noise Level Test (S) - Ensures acceptable sound limits
- Vibration Test (S) - Evaluates mechanical stability
- Degree of Protection (IP) Test (S) - Verifies enclosure protection level
- Overspeed Test (S) - Checks safety at high speed conditions
Quality Control & Compliance Tests
- Routine Testing for Each Motor (R) - Ensures consistency in production
- Periodic Sample Testing (S) - Confirms ongoing compliance
- Test Record Maintenance (R) - Ensures proper documentation
- Calibration of Test Equipment (R) - Maintains accuracy of testing instruments
Marking & Certification Tests
- ISI Marking Verification (R) - Ensures correct use of Standard Mark
- Labelling Compliance Check (R) - Verifies marking as per standard
- Licence Scope Verification (R) - Confirms declared ratings and parameters
Grouping & Type Tests
- Type Test for Motor Variants (S) - Conducted across grouped motor ranges
- Performance Validation Across Ratings (S) - Ensures compliance for all grouped
outputs
- Periodic Rotation Testing (S) - Covers all varieties under licence
BIS Approval Process for Centrifugal Pump Motor
The BIS certification process ensures that the squirrel cage motor meets the required standards
for proper and efficient operation. This process is set by the Bureau of Indian Standards (BIS)
and includes the following steps:
- Online Registration:Manufacturers register on the BIS Manak Online Portal by submitting company details, factory information, and product specifications. Foreign manufacturers must appoint an Authorized Indian Representative (AIR) in India.
- Testing at BIS-Approved Laboratory:Product samples are tested in BIS-approved laboratories to evaluate electrical safety, insulation resistance, heating efficiency, durability, and overall performance as per requirements.
- Application Submission:The application is submitted along with laboratory test reports, technical documents, manufacturing process details, and factory information. Foreign manufacturers must also provide AIR-related documents.
- Factory Inspection:BIS officials conduct an on-site inspection of the manufacturing unit to verify production processes, quality control systems, safety measures, and compliance with the standard.
- Grant of BIS License:If all requirements are successfully met, BIS issues the certification license under Scheme-I, allowing the manufacturer to produce and sell certified products.
- Use of ISI Mark:After certification approval, the manufacturer is permitted to use the ISI mark along with a CM/L number on the product, confirming compliance with the standard.
Documents Required for IS 7538:1996 Certification
The following documents are typically required for obtaining BIS certification:
| Basic Details | - GST Certificate
- Email ID & Contact Number
- Factory & Office Address
- Rent Agreement / Lease Deed (if applicable)
|
| Legal Documents | - Partnership Deed (if partnership firm)
|
| Manufacturing Details | - List of Machinery
- Process Flow Chart
- Layout Plan of Factory
|
| Raw Material Details | - List of Raw Materials
- Supplier Details
- Raw Material Invoices
- Raw Material Test Certificates
|
| Testing & Quality Control | - List of Testing Equipment
- Calibration Certificates
- QC / Lab In-charge Appointment Letter & Qualification
|
| Production Details | - Annual Installed Capacity
- Last Year Production Value
|
| Product & Packaging Details | - Quantity per Package
- Nature of Packing
- Nature of Printing / Marking on Product
|
| Management Details | - Top Management Details
- Concerned Person for BIS Communication
|
| Brand & Certification Documents | - Trademark / Brand Certificate
- Consent Letter from BIS Recognized Laboratory
|
| Additional Documents | - Weekly Off Details
- Hygiene Document (if applicable)
- Relaxation Letter (if applicable), Any Other Relevant Document
|
Foreign manufacturers must additionally appoint an Authorized Indian Representative (AIR) to coordinate with the Bureau of Indian Standards (BIS) and manage compliance requirements in India.
Marking Requirements & License Validity
Marking Requirements:-
When a manufacturer obtains the BIS license, the ISI mark for hair clippers and trimmers must be applied clearly and permanently on the product or its packaging. In addition to the ISI Mark, other important details must also be provided on the product or packaging, as specified in the table below. This ensures the product meets all quality and safety standards.
Note:
Marking is typically applied using durable stamping, tagging, or permanent printing to ensure clear identification during handling, storage, and transportation, as per BIS marking requirements.
Validity of BIS licenses for induction pump motor
After obtaining BIS certification for the product, the license is valid for a fixed period and must be maintained by following BIS rules and standards.
squirrel cage motor certification fees
The cost of BIS certification includes charges for application, inspection, license, testing, and marking. These fees are paid to BIS as per Scheme I guidelines.
Cost Breakdown
Indian Manufacturers
| No. | Major Charges | Particulars | Amount | Remark |
| 1. | BIS Fees | Application Fee | INR 1,000 | --- |
| | Audit Charges | INR 7,000 | --- |
| | License Fee | INR 1,000 | --- |
| | Marking Fee | Depends on product | Discount as per MSME |
| 2. | Testing Charges | Sample Testing Fee | As Applicable | Payable to a BIS-approved laboratory. |
| 3. | EVTL India Service Fee | Consultancy & Support | As per actual | Depends on product type and factory location. |
Foreign Manufacturers
| No. | Major Charges | Particulars | Amount | Remark |
| 1. | BIS Fees | Application Fee | USD 15 | Payable via SWIFT to BIS. SAARC countries can pay INR with 18% GST. |
| | Audit Charges | USD 3,200 – 5,900 | Depend on Country |
| | License Fee | USD 15 | --- |
| | Marking Fee | Depends on product | --- |
| 2. | Testing Charges | Sample Testing Fee | As Applicable | Payable to a BIS-approved laboratory. |
| 3. | EVTL India Service Fee | Consultancy & Support | As per actual | Based on product and manufacturing location. |
Note: Additional costs such as pre-testing or factory pre-inspection may apply. The total cost may vary depending on product type, testing requirements, and current BIS guidelines.
To Know The Process in Detail, Please Visit:-
Under BIS Registration Products ISI and CRS
Conclusion
The BIS certification process for the three-phase squirrel cage induction motors for centrifugal
pumps follows the requirements mentioned in IS 7538: 1996. It ensures that the agricultural
induction motors meet the safety, efficiency, and durability standards. BIS certification reduces
operational issues such as motor failure and electrical risk. This ensures the reliable
performance of the induction cage motors during agricultural usage.
With proper help, one does not have to worry about getting the BIS certificate for Centrifugal
Pump Motors. EVTL India provides all necessary help, right from documentation, application
filing, testing, compliance advice, and even inspections. Getting expert assistance ensures a
stress-free certification journey.
