Test station without automatic protection using two hands control device S 2111

End-of-line safety testing in production

Test station built with a two-hand control safety system is the preferred solution for testing larger objects. When checking the electrical safety of larger electrical devices, PE continuity must be tested on all accessible metal parts. In practice this means checking the connection of multiple locations on the device. The operator must therefore have access to the device under test some stage during the electrical safety check to perform the test on every test point. The main job of the two-handed safety device at this type of safety station is to prevent the user from performing hazardous tests when exposed to the risk of electric shock. The device only allows the test to start when the user has both hands in contact with the safety set: both buttons on the pair of hand controls must be pressed during the test. This prevents the user from accidentally coming in to contact with the parts that become live during the test. If any of the buttons is released, the safety module disconnects the dangerous measurement circuits from the supply.

IEC 60335-1 one of the most widely recognized standards in the field of testing electrical equipment in production lines. Annex A of the IEC 60335-1 specifies that routine tests are to be carried out by the manufacturer on each appliance to detect production variations that could impair safety. They are normally carried out on the completed appliance after assembly, but the manufacturer may perform the tests at an appropriate stage during production, provided that later manufacturing processes do not affect the results.

The following tests are the minimum considered necessary to cover essential safety aspects. It is the manufacturer’s responsibility to decide if additional routine tests are necessary. It may be determined from engineering considerations that some of the tests are impracticable or inappropriate and therefore need not be carried out.

  • Earth continuity test
  • Dielectric strength test
  • Functional test

Measurements

MI 3394 XS (Extra Safety) is a specialised test instrument designed for integration into production lines. The instrument permits the connection of several safety sets for independent control of dangerous measurement circuits. It also supports user-created test sequences with comments, images, wiring diagrams and other extra content.

The parameters and limits can be adjusted for all tests. The instrument can be remotely controlled via black-box protocol, which makes it ideal for integration into automated test systems.

Main features of the instrument:

  • All features of MI 3394 CE MultiTesterXA.
  • Control of measuring circuits with help of Safety sets.
  • Perfectly suited for use in workplaces conforming to EN 50191.

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Industrial catalogues Language Version Release Notes Type Size Download
Electrical equipment en 2023 18.12.2023 pdf 1.54 MB

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Associated Products

MI 3394 CE MultiTesterXS

A 1600 CE Switch 5kV

Accessory description:
The A 1600 CE Switch 5kV combines all features of the CE MultiTesterXS and extends them to four HV test channels and two 4-wire continuity test channels. The CE Switch could be used in conjunction with several separate connection boxes, containing various kinds of contacting to tested items. The operation of CE Switch is completely controlled by the master instrument, no user intervention during the tests is needed. I/O connections and LEDs for controlling the Autosequence® flow are integrated. Testing of electrical equipment with multiple connection points is supported. The switch recognizes the connected adapter and prevents from applying too high voltages/current to it (protection by HW and SW).
May be part of the following product sets (consult specific product page for more information):

A 1674 19” Rack housing

Accessory description:
The A 1674 compact desktop enclosure is designed for integration of the CE Multitester instrument, or/and A 1600 SWITCH 5kV. Its design enables fast and simple integration of measuring components.
May be part of the following product sets (consult specific product page for more information):

S 2111 Safety system with two-hand control

Accessory description:
Two-hand control panel is non-separating protection device. In general, it serve to ensure the location of both hands of a test system operator who gives a control signal for applying a dangerous test voltage. Two-hand control panel thus ascertain that intervention by the operator in dangerous situations is avoided. A two-hand start control should be used for test stations where dangerous voltages are applied to tested objects without test covers or test probes. This safety module is intended for protection with two hand control device and an emergency switch. Both buttons on the two hand control device must be pressed during the test. If any of the buttons is switched off the safety module will disconnect the measuring circuits from the mains. If the emergency switch is activated the test system will be disconnected from the mains. The START button is intended to activate the safety module after being (re-)energized.
May be part of the following product sets (consult specific product page for more information):

A 1625 CheckBox

Accessory description:
It is wise to regularly, on daily basis inspect the test system. CheckBox has a built in electronic components with reference values, which proof that the measuring system is operating correctly. A 1625 CE checkbox is intended for checking of correct measurements for instruments like MI 3394, MI 3325, or with combination of mentioned one with A 1460, or with combination of mentioned one with A 1600 plus one of connection box.
May be part of the following product sets (consult specific product page for more information):

A 1626 Connection box 1-phase

Accessory description:
Diversity of electronic products, which need to be tested, present a many challenges for the manufacturers. Different sizes, shapes and configurations of electronic devices make it challenging for electrical safety examination. Due to these facts Metrel has developed different types of connection boxes, which can be easily adopted to customer’s needs. The A 1626 connection box is a passive devices that acts as a connection interface between the CE SWITCH and the tested equipment. It is intended for connection of various 1-phase appliances to A 1600 CE SWITCH. Equipment with supply cord, equipment intended for fixed installation, electronic subassemblies can be tested. Connections for connection to isolated conductive parts and earthed parts are added. The connection box is coded in order to prevent from applying a too high test voltage to its outputs.
May be part of the following product sets (consult specific product page for more information):

A 1627 Connection box 3-phase

Accessory description:
Diversity of electronic products, which need to be tested, present a many challenges for the manufacturers. Different sizes, shapes and configurations of electronic devices make it challenging for electrical safety examination. Due to these facts Metrel has developed different types of connection boxes, which can be easily adopted to customer’s needs. The A 1627 connection box is a passive devices that acts as a connection interface between the CE SWITCH and the tested equipment. It is intended for connection of various 1- and 3-phase appliances to A 1600 CE SWITCH. Equipment with supply cord, equipment intended for fixed installation, electronic subassemblies can be tested. Connections for connection to isolated conductive parts and earthed parts are added. The connection box is coded in order to prevent from applying a too high test voltage to its outputs. 
May be part of the following product sets (consult specific product page for more information):

A 1688 Universal connection box

Accessory description:
Diversity of electronic products, which need to be tested, present many challenges for the manufacturers. Different sizes, shapes and configurations of electronic devices make it challenging for electrical safety examination. Due to these facts Metrel has developed different types of connection boxes, which can be easily adopted to customer’s needs. The A 1688 connection box is a passive device that acts as a connection interface between the CE SWITCH 5 kV and the tested equipment. It is intended for connection of various 1- and 3-phase appliances to A 1600 CE SWITCH 5 kV. Equipment with intended for fixed installation and electronic subassemblies can be tested. Connections for connection to isolated conductive parts and earthed parts are added. The connection box is coded in order to prevent from applying a too high test voltage to its outputs.
May be part of the following product sets (consult specific product page for more information):

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