Contact Resistance Meter CRM 100A (Model QCRM-100)

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Contact Resistance Meter CRM 100A (Model QCRM-100)

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Contact Resistance Meter CRM 100A (Model QCRM-100) Specification

Connecting Type
Four-terminal Kelvin Connection

Current Range
0 to 100A DC (selectable current)

Capacity
High current injection up to 100A

Load Capacity
100A DC max

Mounting
Portable, Carry-case Design

Response Time
< 5 seconds

Application Media
Electrical Contact Resistance Measurement

Protection
Overload and Short-circuit Protected

Model
QCRM-100

Output
100A

Color
Grey/Black

Dimension (L*W*H)
Approx. 350mm x 300mm x 200mm

Resolution
1

Measurement Range
1 to 1999

Operating Temperature
0C to 50C

Measuring Units
Micro Ohms ()

Signal Type
Direct Current (DC)

Storage Temperature
-10C to 60C

Temperature Range
0C to 50C Operating

Material
High Strength ABS Housing

Power Supply
230V AC, 50Hz

Power Consumption
Approx. 150W

Accuracy
0.5% of reading 2 digits

Display Type
Digital Display (Current & Resistance)

Range
0 - 1999

Safety
Fuse Protected Input and Output

Status Indication
LED Indication for Operation and Errors

Display Features
Simultaneous Current and Resistance

Equipment Type
Contact Resistance Meter

Power Cord
Removable with Secure Locking

Cooling Method
Natural Air-cooled

Control
Panel-mounted Pushbutton Operation

Weight
Approx. 8 kg

Cables Included
Test Leads and Power Cord Provided

Operational Duty
Continuous up to 3 minutes per test, intermittent use

Test Method
Four-wire (Kelvin) Method for High Accuracy

Standards Compliance
Conforms to IEC Standards

Case Type
Rugged Carry Case for Field Use

About Contact Resistance Meter CRM 100A (Model QCRM-100)

Max Test Current	100 A
Test Current	100A
Resistance Range	0.1 200 m
Application	Shunts , cable joints , isolators, Disconnector, Switchgear, Busbar Joint, Circuit Breaker
Usage/Application	Industrial
Display Type	Digital
Test Method	4 Wire
Power Supply	230 V AC
Data Storage	No Memory
Country of Origin	Made in India
Delivery	INDIA
Mfg by	Quadrant Measurements Private Limited
Mktd by	Quadrant Measurements Private Limited

We offer high-precision Contact Resistance Meters designed for accurate measurement of low resistance values in electrical contacts and conductive joints.

These instruments are widely used for testing circuit breakers, switchgear, busbars, disconnectors, cable joints, and other electrical connections to ensure optimal performance and system reliability.

The Contact Resistance Meter helps identify loose connections, corrosion, contact deterioration, and other defects that may cause overheating, power loss, or equipment failure.

Key Features:
True Four Terminal Measurement.
100 Amp Max DC Constant Current Source.
Fast and stable test results.
Portable and rugged design for field use
Suitable for circuit breakers, switchgear, busbars, and transformers
3.5 Digit LED display for Current and Resistanceand mV drop. Current Measurement (oponal). Fast Response time.
Stable and fast measurement.

Applications:
Circuit Breakers Electrical Substations Power Plants Industrial Maintenance Switchgear Testing Transformer Maintenance Electrical Utilities Current transformer manufacture
Isolators , shunts and busbars.

Our Contact Resistance Meter is an ideal solution for electrical engineers, testing professionals, and maintenance teams seeking reliable and accurate resistance measurements for critical power system equipment.

Advanced Four-Wire Measurement for Precision

The QCRM-100 employs the Kelvin (four-terminal) method to offer highly accurate contact resistance measurements. This technique virtually eliminates errors from test leads and connector resistances, ensuring test results you can trust, even at low resistance values. Precision measurement is further enhanced by selectable test currents up to 100A DC.

Built for Field and Laboratory Use

Encased in high-strength ABS and a rugged carry-case design, the QCRM-100 is engineered for both portability and durability. Its compact dimensions and approximately 8 kg weight make it easy to transport, while LED indicators, pushbutton controls, and a digital display provide user-friendly operation in any setting.

FAQ's of Contact Resistance Meter CRM 100A (Model QCRM-100):

Q: How does the CRM 100A ensure high measurement accuracy?

A: The CRM 100A utilizes the four-wire (Kelvin) testing method, which eliminates errors caused by lead and contact resistance, thus ensuring highly accurate contact resistance measurements. The digital display provides clear, simultaneous readings of current and resistance.

Q: What is the recommended process for conducting a measurement with the QCRM-100?

A: To conduct a measurement, securely connect the four Kelvin leads to the test object, select the appropriate test current (up to 100A DC), and press the panel-mounted pushbutton to initiate the measurement. Results appear simultaneously on the digital display within 5 seconds.

Q: When should the CRM 100A be used, and for what applications?

A: The CRM 100A is ideal for checking electrical contact resistance in circuit breakers, switchgear, busbars, and high-current connections during installation, commissioning, and preventive maintenance, especially when accurate, low-resistance measurements are essential.

Q: Where can the QCRM-100 be effectively deployed?

A: Thanks to its rugged construction and portable carry-case, the QCRM-100 is suitable for both field and laboratory environments. It is designed to withstand demanding industrial conditions, making it a reliable tool for on-site testing throughout India.

Q: What safety features are integrated into the CRM 100A?

A: The instrument offers fuse protection on both input and output, plus overload and short-circuit protection to safeguard the device and operator during high-current tests. Status LEDs clearly indicate normal operation or error states.

Q: How does the cooling system work in the CRM 100A?

A: The CRM 100A uses a natural air-cooling mechanism, relying on its robust design to dissipate heat during intermittent operation, supporting up to 3 minutes of continuous testing within safe temperature limits.

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