Megger: Best in Class Solutions to Keep Your Plant Running

DET14C and DET24C Digital Earth Clamps

Clamp-on Ground Testing

The clamp-on ground tester is an effective and time-saving method when used correctly because the user does not have to disconnect the ground system to make a measurement or place probes in the ground. The major advantage of the clamp-on method is that it is quick and easy.

The DET14C and DET24C are advanced clamp-on ground resistance testers that set new standards pertaining to access, performance, features, simplicity of operation and safety. Designed with flat core ends, they prevent dirt buildup, ensuring measurement integrity and improved reliability over products with interlocking teeth. Other enhancements include safety to CATIV 600V, a builtin filter function for electrically noisy environments, time and date stamped stored test results and ultra long battery life.

DET14C

Ground Resistance Certainty: 0.05 Ω - 1500 Ω
Ground Resistance Resolution: 0.01 Ω - 10 Ω
Ground Resistance Intrinsic Range: ±1.5% ±0.05 Ω - ±35%
Current Range (RMS): 0.5 mA - 35.0 A
Current Resolution: 0.01 mA - 0.1 A
Current Intrinsic Certainty: ±2% ±0.05 mA - ±2% ±0.1 A
Maximum Jaw Opening: 39 mm
Data Logging: 256 records
Data Download: N/A
Battery Life: 24 hours continuous testing

DET24C

DLRO10HD DLRO10X Digital Microhmmeters

Continuity and Low Resistance Testing

Measuring low resistance helps identify resistance elements that have increased above acceptable values. The operation of electrical equipment depends on the controlled flow of current within the design parameters of the given piece of equipment. In the modern age of electronics, increased demands are placed on all aspects of electrical circuitry. In the present industrial electronic environments, the field test engineer is now required to make measurements which show repeatability within a few micro-ohms or less. These types of measurements require the unique characteristics of a low resistance ohmmeter’s four-wire test method.

Megger's DLRO10HD Digital Microhmmeter features output power limiting to 0.25 W so as not to heat the test piece, with the additional benefit of high power, high compliance ranges. The DLRO10X Microhmeter is built into a strong, lightweight case that is equally suitable in the field or in the laboratory. Light enough to be worn around the neck, it is small enough to be taken into areas which were previously too small to access.

DLRO10HD

Full Scale Resistance Range: 1.9999 mΩ - 1999.9 Ω
Resistance Resolution: 0.1 μΩ - 100 mΩ
Full Scale Volts (Resistive/Inductive): 20 mV - 200 mV/20 mV - 200 mV
Test Current (Restive/Inductive): 10 A - 100 μA/1A - 100 μA
Measurement Mode: Manual, Auto, Continuous, Inductive, Undirectional
Measurement Control: Fully Automatic
Range and Safety: Large backlight LCD
Data Transfer: N/A
Data Storage: N/A
Battery Life: >1000 Auto (3 sec) tests
Tough Transport Case Housing: Yes

DLRO10X

Full Scale Resistance Range: 1.9999 mΩ - 1999.9 Ω
Resistance Resolution: >0.1 μΩ - 100 mΩ
Full Scale Volts (Resistive/Inductive): 20 mV - 200 mV/20 mV - 200 mV
Test Current (Restive/Inductive): 10 A - 100 μA/1A - 100 μA
Measurement Mode: Manual, Auto, Continuous, Inductive, Undirectional
Measurement Control: Fully Automatic, Manual
Range and Safety: Large backlight LCD
Data Transfer: Real Time or from storage via RS232
Data Storage: 700 records
Battery Life: Typical 1000 x 10 A tests
Tough Transport Case Housing: No

MIT515 and MIT525 Insulation Resistance Testers

Diagnostic Insulation Testing

Insulation defects are the most common cause of electrical failure or damage. Regular testing of the quality of the insulation is a decisive part of every maintenance program. Only by regular testing can you get the information required to minimise equipment failure and to plan investments and maintenance programs. Comparing the results of a simple test of the insulation resistance against the limits established for the equipment gives a pass/fail decision. But is a "pass" really a good result? What does fail mean? Where is the problem?

Megger's MIT515 and MIT525 Insulation Resistance Testers can help you answer these questions, and more.

MIT515

Max. Output Voltage: 5 kV
Max. Resistance: 10 TΩ
Accuracy from 1 MΩ to: ±5% ≤ 2 TΩ; ±20% to 20 TΩ
Short Circuit Output Current: 3 mA
Max. Noise Rejection: 3 mA
Safety Rating (to Max. Altitude): CAT IV 600 V
Max. Altitude: 3000 m
Battery Life: 6 hrs single charge
USB Interface: No
On-Board Memory: No
Temperature Value Stored: No
Time/Date Stamped Results: No

MIT525

Max. Output Voltage: 5 kV
Max. Resistance: 10 TΩ
Accuracy from 1 MΩ to: ±5% ≤ 1 TΩ; ±20% to 10 TΩ
Short Circuit Output Current: 3 mA
Max. Noise Rejection: 3 mA
Safety Rating (to Max. Altitude): CAT IV 600 V
Max. Altitude: 3000 m
Battery Life: 6 hrs single charge
USB Interface: Yes
On-Board Memory: Yes
Temperature Value Stored: Yes
Time/Date Stamped Results: Yes

TDR2050 Advanced Dual Channel TDR

Time Domain Reflectometer Testing

As with any test equipment, it is best to learn about the equipment in a controlled environment by simulating some known faults before going into the field and having to interpret the information under pressure or having to get the cable back on line. Physical problems such as opens, shorts, load coils and bridged taps are easy to duplicate. Time Domain Reflectometers (TDRs) use simple transmission line theory and pulse reflection principles to detect impedance changes along a cable. The TDR transmits high frequency electrical pulses that travel through the cable until a change in characteristic impedance is encountered. Depending on the nature of the impedance change either all or part of the transmitted pulse will reflect back to the TDR.

The Megger TDR2050 is a state of the art, dual channel, high resolution, compact Time Domain Reflectometers with a color screen for locating faults on paired metallic cables.

TDR2050

Measurement Range: 65,000 Ft. ( 20,000 m)
Accuracy: ±1% of range ± 1 pixel at .67 VF; depends on correct VF
Resolution: 1% of range
Output pulse: Up to 20 volts peak to peak into open circuit
Pulse width: Down to 2 nSec
Velocity factor (VF): Variable from 0.2 to 0.99 in steps of 0.01
Cable impedance: 25 Ω, 50 Ω, 75 Ω, 100 Ω, 140 Ω + AUTO
Gain: Settable for each range
Diplay: WVGA color graphic LCD, selectable color schemes
Display features: Dual trace and dual cursor capabilities
Memory: Store 100 traces with a 32 character label
Features: Distance dependent gain, Find end, Step TDR, AutoFind
Input protection: CAT IV 600V
Batteries: Li-Ion rechargable with 12 hours typ.
Connectors: (4) 4mm - safety temrinals and (2) F connectors
Test leads: (2) pairs retractable sheath Fused test lead set
Rating: IP54