Accessories

The application area of the Power Choke Tester DPG10 series includes small SMD components – the size of a finger nail – to large-scale chokes for energy technology uses, weighing more than 1000 kilograms. This implies that on one hand thin wires, measuring less than 0.5 mm in diameter, are used and on the other hand massive conductor rails up to 20 or 30 mm thick must be connected. The use of four-terminal sensing (Kelvin sensing) is mandatory; otherwise erroneous test results are unavoidable.

The standard cable set with all necessary cables for the operation is of course part of the delivery. The test leads for the four terminal connection to the device under test comprise a special cable for very high test current and a separate cable for the sense line. They are 0.6 m long. The alligator clips are laid out to accept wires up to approximately 20 mm in diameter.

A variety of test leads to meet the different applications are available as optional accessories. Upon request, we assemble customer-specific individual test leads.

PLEASE NOTE: All test leads with 4mm connector can be connected also to the 6 mm sockets of the devices! The test leads with 6mm connector can be connected only to 6 mm sockets.

a) Kelvin Test Leads

Kelvin clips make the connection of the device under test much easier since the four-terminal sensing can be realised with only 2 clips. Both jaws of the clip are insulated against each other. One jaw carries the measurement current and the other is used as sensing terminal.

The design of our Kelvin test leads is optimised since the uncertainties during the measurement – caused by the inductive coupling between the force lines and the sense lines – are minimised. Therefore, standard Kelvin test leads should not be used even if they are very massive!

Kelvin test leads for small devices under test (KK12-4):

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  • Length: approx. 0.75 m
  • Clampable wire diameter: 0 to 10 mm
  • Max. measuring current: 30 A
  • Avoid use when inductance is < 5 µH (uncertainty will increase)
  • Connector: 4 mm
  • Part number: KK12-4

Kelvin test leads (KK11-4):

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  • Length: approx. 1 m
  • Clampable wire diameter: approx. 1 to 25 mm
  • Max. measuring current: up to 250 A
  • Avoid use when inductance is < 10 µH (uncertainty will increase)
  • Connector: 4 mm
  • Part number: KK11-4

Kelvin test leads for medium-sized devices under test (KK12-6):

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  • Length: approx. 1.2 m
  • Clampable wire diameter: approx. up to 32 mm
  • Max. measuring current: up to 1500 A
  • Avoid use when inductance is < 30 µH (uncertainty will increase)
  • Connector: 6 mm
  • Part number: KK12-6

Kelvin test leads for large devices under test (KK11-6):

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  • Length: approx. 1.4 m
  • Clampable wire diameter: approx. up to 35 mm
  • Max. measuring current: up to 5000 A
  • Avoid use when inductance is < 30 µH (uncertainty will increase)
  • Connector: 6 mm
  • Part number: KK11-6

Kelvin test leads for 3-Phase Extension Unit (KK31-4):

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  • Length: approx. 1 m
  • Clampable wire diameter: approx. 1 to 25 mm
  • Max. measuring current: up to 250 A
  • Avoid use when inductance is < 10 µH (uncertainty will increase)
  • Connector: 4 mm
  • Part number: KK31-4

Kelvin test leads for 3-Phase Extension Unit for medium-sized devices under test (KK32-6):

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  • Length: approx. 1.2 m
  • Clampable wire diameter: approx. up to 32 mm
  • Max. measuring current: up to 1000 A RMS
  • Avoid use when inductance is < 30 µH (uncertainty will increase)
  • Connector: 6 mm
  • Part number: KK32-6

Kelvin test leads for 3-Phase Extension Unit for large devices under test (KK31-6):

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  • Length: approx. 1.4 m
  • Clampable wire diameter: approx. up to 35 mm
  • Max. measuring current: up to 5000 A
  • Avoid use when inductance is < 30 µH (uncertainty will increase)
  • Connector: 6 mm
  • Part number: KK31-6

b) Extra long Test Leads

For measuring objects that cannot be placed next to the measurement device due to their size or weight, a set of extra long test leads is available. This cable set also provides the opportunity to connect measuring objects with connecting points spaced far apart.

Use of the extra long cable set is only recommended if they are really necessary, since measuring inaccuracies may increase with very small inductance values.

Test Lead Set length 2m (KL11-4):

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  • Length: approx. 2 m
  • Clampable wire diameter: approx. up to 20 mm
  • Max. measuring current: up to 1500 A
  • Avoid use when inductance is < 30 µH (uncertainty will increase)
  • Connector: 4 mm
  • Part number: KL11-4

Test Lead Set length 2m (KL11-6):

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  • Length: approx. 2 m
  • Clampable wire diameter: approx. up to 20 mm
  • Max. measuring current: up to 1500 A
  • Avoid use when inductance is < 30 µH (uncertainty will increase)
  • Connector: 6 mm
  • Part number: KL11-6

DPG20 Test Lead Set length 1.8m (KL11-10)

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  • Length: approx. 1.8 m
  • Clampable wire diameter: approx. up to 35 mm
  • Max. measuring current: up to 10000 A
  • Avoid use when inductance is < 30 µH (uncertainty will increase)
  • Connector: 10 mm (DPG20 only)
  • Part number: KL11-10

c) Test adapter for low-inductance and SMD components

With the Power Choke Tester DPG10 series, the measurement of small inductance values is limited to values greater than approx. 1-3µH due to the parasitic properties of measuring cables.

That is why we offer special test adapters for the measurement of low-inductance components for the DPG10 B series, which can be plugged directly into the front panel of the devices. There is a separate test adapter for each current range of the devices. This makes it possible to measure inductance values down to < 100nH if the measurement parameters are optimally selected.

Regardless of the inductance, the test adapters are ideal for all SMD components that can be soldered directly onto the test adapters. However, they can also be used for PCB mounted THD components.

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  • largest measuring range: MAB1
  • medium measuring range: MAB2
  • smallest measuring range: MAB3

MAB1 not suitable for the outdated DPG10 A series

Part number for a set MAB1+MAB2+MAB3: MAB123
Part number for 3 pcs. MAB1: MAB111
Part number for 3 pcs. MAB2: MAB222
Part number for 3 pcs. MAB3: MAB333

d) InterfaceBox for DPG10/20 devices

With the help of our new InterfaceBox INT1, inductance measurement is possible in a fully automated test line without having to write your own software to control the Power Choke Tester DPG10.
Our InterfaceBox INT1 provides the interface between our PC software and a fully automated test line. 3 universal inputs and 5 universal outputs enable interaction with the test line’s PLC. For example, the PLC can tell the DPG10 software when a new test object has been contacted and the DPG10 software can tell the PLC that a measurement is in progress, when the measurement is finished and whether the test object has passed the test. The test object can then be ejected accordingly. Warning lights, horns or foot switches can also be connected.

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e) Hard-top Case

For protection during transport and for storage of the Power Choke Tester DPG10 series incl. accessories a robust hard-top case of aluminium profiles is available. It is not suitable for the model DPG10-4000B/F.

  • Colour: Silver-grey
  • Internal dimensions: 650 x 410 x 230 mm
  • With carrying handle and 8 rubber foots
  • 2 automatic locks, 3 hinges, 8 corner protections of steel
  • Base of case lined with rigid foam, with 2 compartments for accessories
  • Top of case lined with soft foam, compartment for operating manuals
  • Part number: CASE1