Instrumentation

Usage/Application	lab
Brand	V- TECH
Display	LCD
Weight	6kg
Dimension	37(L)x26.5(W)x22.5(H) cm
Resolution	0.1
Power Supply	220V+-10%, AC 50 Hz. (120V+-10% against order)
Test Current	100A DC (MRL-11) 100-200A (MRL-22)
Memory Capacity	Stores 100 test results
Dimensions	37(L)x26.5(W)x22.5(H) cm
Measuring Accuracy	0.5 class
Printer	Built in printer
Measuring Range	0 to1999.9

Features:

• Micro-controller operated
• Built-in printer
• Store and recall 100 test results
• RS-232 interface
• Weight: 11 kg
• Front panel with legend

Applications:

• Measure rotating machine contact resistance
• Measure breaker element resistance
• Measure resistance of bus bar joints
• Locate poor connections

Accessories:

• Bag
• Mains cord
• Flexible testing cable set with alligator clamps, 8 meter long
• Operating Manual
• Calibration certificate.

The advantages of VT-series

• Automatic measure of contact resistance in 3 seconds
• True 4 terminal measurement: High accuracy. No lead compensation required
• Test results saved automatically
• Recall and print last 100 test results
• Prints results on built-in printer.

Introduction:

Measuring the line loop contact resistance by bridges is not the ideal method as thetest current is only a few milli amperes. Thus the value is not the true value of thecontact resistance. VT is a direct reading tester, and uses a DC test current,resulting in true value and accurate measurements. ‘VT’ testers adopts digitalcircuit technique and is used for measuring contact resistance of switch controlequipments at test current of 100A/200A DC. The measurements are accurate asthe test is highly stable. VT-series is a new, fully automatic micro controlledtester that measures contact resistance at 100A/200A DC with built in printer.VT-series is micro controller operated user friendly, accurate, reliable, small, lightweight and reliable tester. It incorporates a large LCD screen for display of menuand results. The results are printed on built-in printer after the test is over. Itincorporates break through technology and design that gives accurate and reliable
results, again and again RS 232 link is also provided.

Principle:

Current of 100A/200A DC is passed in the contact and voltage drop across thecontacts is sensed, processed and the resistance is displayed on screen. VT-seriesis micro controller operated user friendly, accurate, reliable, small, light weight andreliable tester. VT series incorporates a large LCD Screen for display of menuand results. The results are printed on built-in printer. VT-series incorporatesbreakthrough technology and design that gives accurate and reliable results, againand again. A true four terminal measurement is used to eliminate the need for leadresistance compensation.