Insulation & Continuity Testers (62 Products)
Free UK Delivery*Chauvin Arnoux CA6511 Megohmmeter Analogue with Rubber Boot & Leads£412.08 £343.40
686 Reward PointsPrice Match GuaranteeSKU: P01140201
- Measures insulation as high as 1000Mohm
- Also tests for voltage and continuity
- Automatic testing for voltage
Free UK Delivery*Chauvin Arnoux CA6522 Insulation & Continuity Tester£419.22 £349.35
698 Reward PointsPrice Match GuaranteeSKU: P01140822
- Chauvin Arnoux's entry-level insulation tester, recommended for industrial maintenance
- Selectable test voltages of 250, 500 and 1000V
- Insulation measurement range to 40GΩ
Free UK Delivery*Chauvin Arnoux CA6524 Insulation & Continuity Tester£476.34 £396.95
792 Reward PointsPrice Match GuaranteeSKU: P01140824
- Handheld insulation and continuity tester recommended for industrial maintenance
- Upgraded version of the CA6524 with various new measurement modes
- Built-in memory
Free UK Delivery*Chauvin Arnoux CA6513 Megohmmeter Analogue with Rubber Boot & Leads£485.52 £404.60
808 Reward PointsPrice Match GuaranteeSKU: P01140301
- Continuity and insulation tester
- Excellent display and logarithmic scale
- Resistance up to 1,000Ω
Free UK Delivery*Chauvin Arnoux CA6526 Insulation & Continuity Tester£523.26 £436.05
872 Reward PointsPrice Match GuaranteeSKU: P01140826
- Test insulation resistance up to 200GΩ
- Built-in memory storage with download to PC
- Also tests a wide variety of other electrical parameters
Free UK Delivery*Chauvin Arnoux CA6503 Megohmmeter Magneto 250 - 1000V DC£548.76 £457.30
914 Reward PointsPrice Match GuaranteeSKU: P01132504
- Average accuracy of 2.5% across four tests
- All terrain tool
- Vast number of uses
Free UK Delivery*Chauvin Arnoux CA6536 Specialist Megohmmeter£589.56 £491.30
982 Reward PointsPrice Match GuaranteeSKU: P01140836
- Functions as both an insulation and continuity tester and digital multimeter
- Optimised for specialist sectors such as avionics, space and defence
- Variable test voltage ranging from 1 to 100V with 1V increments
Free UK Delivery*Chauvin Arnoux CA6534 Electronics Megohmmeter£637.50 £531.25
1062 Reward PointsPrice Match GuaranteeSKU: P01140834
- Optimised for conducting tests in electronics industries
- Functions as a digital multimeter and an insulation and continuity tester
- Supplied with Megohmmeter Transfer (MEG) Software
Free UK Delivery*Chauvin Arnoux CA6532 Telecommunications Megohmmeter£657.90 £548.25
1096 Reward PointsPrice Match GuaranteeSKU: P01140832
- Ideal for taking electrical measurements of telephone lines
- Functions as both an insulation and continuity tester and digital multimeter
- Capable of storing up to 1300 measurement results
Free UK Delivery*Chauvin Arnoux MX604 Surge Arrester and Insulation Tester£778.80 £649.00
1298 Reward PointsPrice Match GuaranteeSKU: MX0604
- Dual functionality - test insulation resistance and surge arresters
- Analogue scale
- Includes surge arrester module and remote probe
Free UK Delivery*Chauvin Arnoux CA6541 Megohmmeter Digital with Carry Case & Leads£1,014.00 £845.00
1690 Reward PointsPrice Match GuaranteeSKU: P01138901
- Operates at a range of 50V to 1kV
- Comes with durable hard case and attached carry case
- Large LCD display with backlighting
Free UK Delivery*Chauvin Arnoux CA6543 Megohmmeter Digital with RS 232 and Software£1,494.00 £1,245.00
2490 Reward PointsPrice Match GuaranteeSKU: P01138902
- Operation values range from 50V to 1Kv
- Water-resistant, durable hard case included
- Rechargeable battery and internal memory
About Insulation & Continuity Testers
Insulation is a vital part of any electrical system. Correctly installed insulation ensures that current flowing through a system remains on the designated path it should be moving through and breakdowns in the overall insulation of a system can cause leakage current to flow, leading to problems and potential hazards.
The overall insulation of any system is susceptible to degradation over a time period. As standard the insulation of an electrical system or appliance should be solid enough to constrain as much leakage current as possible until the overall level is completely negligible, but many outside factors can affect the overall insulation over a time period, thus increasing the risk of higher levels of leakage current.
Parameters that can affect the overall amount of insulation present in a system vary greatly; everything from cuts in wiring, vibrations, pollution (corrosive materials) and even dust and dirt in the air can gradually erode away at insulative properties, effectively rendering them less useful over time.
Insulation test equipment is designed to effectively measure the level of insulation left on an electrical system. Knowing the overall level of insulation allows the tester to determine whether the insulation is still safe for use, or whether steps have to be taken immediately to make sure that the insulation is repaired to an acceptable level.
Common insulation testers are generally used to perform two different forms of electrical measurements. These measurements are obtained by testing between the conductors that carry current when energized and other parts of the system in which no current should ever flow under normal operating conditions. To gain an overall reading of the level of insulation resistance present two things must be measured: the actual leakage current flowing through the installation, and to measure the actual resistance of the insulation.
Insulation is also commonly measured to verify quality control of manufactured electrical devices, ensure electrical devices meet codes and standards (safety compliance), determine a device's performance over time (preventive maintenance) and determine causes of failure in troubleshooting scenarios. You can further classify insulation resistance testing into different testing types. These are:
- Design testing
- Production testing
- Acceptance testing
- Verification testing
- Preventive maintenance testing
- Fault locating testing
The actual type of insulation resistance tester needed to be used also varies on an application-by-application basis. Although standard ohmmeters commonly found on devices such as multimeters can be used to measure insulation, but these generally do not have the measurement range required to effectively determine insulation.
There are two main instruments that are used to measure insulation resistance - the first is the megohmmeter, a tester that's basically exactly the same as a standard ohmmeter but has a higher measurement range to accomodate for the needs of insulation. The second tester is known as a hipot tester, and these instruments measure insulation resistance by measuring leakage current. Hipot testers apply a high test voltage between two different conductors or between a conductor and ground and measure the leakage current. An excessive amount of leakage current (in apms) indicates a lower resistance or breakdown in insulation. Hipot tests almost always involve applying a test voltage that is several times higher than the specified operating voltage of the cable or device being tested.
Continuity testers are used to test for a complete flow path (open, broken, or closed) in any de-energized low-resistance application. They tie in with insulation testers, as broken continuity of a flow path generally means that current is being lost somewhere, which may be the result of a break in insulation levels.
In fact this type of tester is often integrated together into an insulation testing device, allowing users to carry out both testing types without the need to switch instruments. If you do prefer to operate with separate instruments both insulation and continuity testing devices are available as separate products as well.
Continuity testers can also contain integrated voltage measurement capability using two-pole probes.