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Electrical Test Equipment
Manufacturers of Electrical Test Equipment

Socket Testers

Socket testers are a low cost and quick way to check problems in a socket. From the Classic Check Plug through to the new E-Ze Check Xtra earth loop impedance socket tester, Martindale's range of socket testers are easy to use and good value for money.

CP511 Classic Check Plug  BZ101 Buzz-it check plug
CP201 250V Industrial check plug  CP301 Industrial check plug
EZ150 Check Xtra earth loop impedance socket checker PC101 Three Phase industrial check plug with phase rotation

Click here for information on safe sockets

 
 
Fast & Easy Classic Check Plug
CLASSIC CHECK PLUG - CP511 - £119.50 (box of 10) 

The CP501 Check Plug is a fast and easy way to ensure that 13A sockets are wired correctly, indicated by all three high brightness, long life neons illuminating. Wiring errors are indicated by one or more neons failing to light, with the pattern of lit neons indicating the type of fault. This failsafe socket tester system means that any neon not lit indicates a problem.

The CP501 has a virtually indestructible, flame retardant ABS case with a sculpted shape for easy removal. The CP501 Check Plug induces less than 5mA of earth leakage, well below RCD trip thresholds. As with all standard socket testers the CP501 only verifies the presence of an earth, it does not assess its quality. Similarly neither it nor any other tester can detect earth neutral reversal. See the NEW
Martindale E-Ze Check™ Xtra earth loop impedance socket tester below.

CP501 Technical Specification
Instruction Manual

 
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Buzz-It Check Plug
BUZZ-IT CHECK PLUG - BZ101 - £16.50 

The Buzz-it is a fast and easy way to ensure 13A sockets are wired correctly in the same way as the Check Plug above. The Buzz-it gives an audible signal in addition to the three neons lighting when the wiring is correct. This allows for awkwardly placed, or not easily visible, sockets to be checked. The Buzz-it can also be used as a basic fuse finder - when the correct fuse is pulled the buzzer stops ! For a more sophisticated fuse finder, with no hearing distance limits and no risk of pulling the wrong fuse.

See the FD650 for a fully specified Fuse Finder.

BZ101 Technical Specification
Instruction Manual

 
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Industrial Check Plug

250V iNDUSTRIAL CHECK PLUG - CP201 - £21.95


For factory and industrial maintenance, the 250V Industrial Check Plug (CP201) is fitted with a standard blue 250V 16A BS4343/ IEC309 plug (round 3 pin). Simply plug it into an appropriate socket outlet and it will instantly identify whether or not the socket is correctly wired, in the same way as the Classic Check Plug.

CP201 Technical Specification
Instruction Manual

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Industrial Check Plug
110V C.T. INDUSTRIAL CHECK PLUG CP301 - £25.95

Using LEDs to highlight possible fault combinations, the CP301 is invaluable for instantly checking sockets in a factory or on site installations. Designed for use on 110V centre tapped circuits, it is fitted with a yellow 110V 16A CT plug to BS4343/IEC309. The CP301 shows similar fail safe indications as the Classic Martindale Check Plug.

CP301 Technical Specification
Instruction Manual

 
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3 Phase Industrial Check Plug
3 PHASE INDUSTRIAL CHECK PLUGPC101 £54.50

For 3-phase socket outlets, the PC101 will instantly prove connection of all three lines (or identify which are not connected) and show the sequence of phase rotation. Essential to ensure correct and safe running of three phase plant with motors going in the expected direction, it is fitted with a red 16A, 3P+E, 4 pin BS4343/ IEC309 plug.

PC101 Technical Specification
Instruction Manual

 
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Earth Loop Impedance Socket Checker

see our press release

E-ZE CHECK XTRA EARTH LOOP IMPEDANCE
SOCKET TESTER   EZ150 -  £55.20

Identifies faults other checkers can’t !

A revolutionary new socket tester with earth safety test, voltage and wiring checks. Conventional socket testers have the weakness that they only tell you if the earth is connected, they don’t tell you how safe it is. Martindale’s new T-Safe™ Technology gives safe earth loop impedance checking within carefully selected bands without tripping the RCDs.
• Non-trip earth loop test
• Voltage test
• Socket test
• T-Safe™ technology
• Voltage warning

EZ150 Technical Specification
Instruction Manual

 

 
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