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200 A Micro-Ohmmeter - DLRO200 (Megger)

200 A Micro-Ohmmeter - DLRO200 (Megger) Specification

Application
Low resistance measurement for circuit breakers, switchgear, busbar joints, etc.

Humidity
0-90% RH (non-condensing)

Number of Specimens
Single specimen measurement

Automation Grade
Manual and remote operation

Features
Automatic current reversal, true 4-terminal measurement, data storage, remote start, lightweight and rugged design

Power Supply
100-240 V AC, 50/60 Hz

Test Range
0.1 to 1

Equipment Type
Digital Micro-Ohmmeter

Frequency
50/60 Hz

Temperature
-10C to +50C (operating), -20C to +60C (storage)

Resolution
0.1

Interface Type
RS232 port

Display Type
Large backlit LCD

Accuracy
0.2% of reading 2 digits

Mounting Type
Portable

Measuring Range
0.1 to 1

Response Time
less than 1 second

Operating Voltage
100-240 V AC

Usage
Routine and commissioning testing of electrical connections

Capacity
200 A maximum output

Machine Weight
15 kg

Control Mode
Manual and remote control

Cable Compensation
Yes (automatic)

Protection
Built-in thermal and overcurrent protection

Test Duration per Cycle
Up to 60 seconds at 200 A

Dimensions (LxWxH)
340 x 255 x 180 mm

Maximum Output Current
200 A DC

Ingress Protection
IP54

Output Voltage
2 V DC

Battery Operation
Not supported (AC mains only)

Data Storage Capacity
Up to 300 records

Safety Category
CAT III 300 V

200 A Micro-Ohmmeter - DLRO200 (Megger) Trade Information

Minimum Order Quantity
1 Piece

Payment Terms
Cash in Advance (CID)

Supply Ability
10 Pieces Per Month

Delivery Time
10 Days

Main Domestic Market
All India

About 200 A Micro-Ohmmeter - DLRO200 (Megger)

The Megger DLRO200 is a high-current digital micro-ohmmeter designed for accurate low-resistance measurements using test currents up to 200 A DC. It employs a 4-wire Kelvin measurement method to eliminate lead resistance errors, ensuring precise and repeatable results. Compact, rugged, and portable, the DLRO200 is ideal for both field and workshop testing of electrical joints and contacts.

Key Features

High-current output up to 200 A
Micro-ohm resolution for low-resistance testing
Compact and portable rugged design
Reliable performance for industrial applications

Applications

Circuit breaker contact resistance testing
Busbar and joint resistance measurement
Switchgear and panel testing
Earthing and bonding verification
Industrial maintenance and commissioning

Accurate Low Resistance Measurement

Engineered specifically for low resistance testing, the DLRO200 provides accurate readings from 0.1 to 1 with a resolution of 0.1 and 0.2% accuracy. Automatic current reversal and true 4-terminal measurement improve precision by eliminating thermal EMF and connection errors, ensuring high integrity for every test.

Designed for Safety and Reliability

With safety category CAT III 300 V, the DLRO200 features robust protection against overcurrent and overheating. Its IP54-rated enclosure resists dust and moisture, making it dependable in challenging environments. Thermal management and exemplary build quality reinforce consistent and safe operation during routine and commissioning tests.

Efficient and User-Friendly Operation

Users benefit from straightforward manual or remote control modes and intuitive, fast-response controls. The large, backlit LCD and data storage for 300 records streamline both field work and reporting. Automatic cable compensation and remote start functionality boost efficiency, particularly for repetitive and large-scale testing tasks.

FAQ's of 200 A Micro-Ohmmeter - DLRO200 (Megger):

Q: How does the DLRO200 Micro-Ohmmeter ensure accurate low-resistance measurements?

A: The DLRO200 employs true 4-terminal measurement, automatic cable compensation, and automatic current reversal to eliminate errors from lead resistance and thermal EMF, resulting in highly accurate readings within 0.2% of the measured value.

Q: What are the main applications of the DLRO200 in electrical testing?

A: This instrument is widely used for testing low resistance in circuit breakers, switchgear, busbar joints, and other critical electrical connections during routine maintenance and equipment commissioning.

Q: When should I use the DLRO200 instead of a standard ohmmeter?

A: Use the DLRO200 when high accuracy and high current (up to 200 A DC) are needed to measure very low resistances, especially in heavy electrical systems where contact integrity is vital. Its capability surpasses that of standard ohmmeters for these applications.

Q: Where can the DLRO200 be used, considering environmental concerns?

A: With its IP54 rating, the DLRO200 can operate reliably in dusty and humid environments. It's suitable for both indoor and field use, within temperature ranges from -10C to +50C and up to 90% relative humidity (non-condensing).

Q: What is the process for storing and transferring test results with this device?

A: The DLRO200 can automatically store up to 300 test records in its internal memory. Data can be downloaded via the RS232 port for further analysis and record-keeping.

Q: How does the DLRO200 benefit users during routine electrical maintenance?

A: Its combination of high current capability, robust safety features, quick response time, and large, clear display makes routine and repetitive testing of electrical connections fast, reliable, and easy to document.

Q: Is the DLRO200 portable and easy to transport for field operations?

A: Yes, the DLRO200 has a compact design (340 x 255 x 180 mm) and weighs only 15 kg, making it portable and well suited for on-site testing, even in tough industrial environments.

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