METREL MI 3399, Instruction Manual With Exercises

Page: 15 / 272

Electrical Safety and Quality ApplicationTrainer - Introduction MI 3399
15
4 Description of the MI 3399 Application Trainer
4.1 Technical data
Mains connection 3-phase (4 m) type 3P+N+PE or one-phase type, using a
1-phase adapter (2 m).
Width 125 cm x 125 cm
Height 220 cm
Mass 240 kg approx., 350 with packaging
Fixing to a table: by means of two screws (distance between fixing holes is
700 mm)
Respected standards EN 61010-1 (safety)
EN 50081-1 (EMC)
N 50082-1 (EMC)
Test sockets 1-phase with PE terminal
3-phase (3L+N+PE)
Protection classification CLASS

(PE terminal connected to metal housing)
Fuse protection Fuse B 10
Table 4-1: Technical data.
4.2 Connection to mains voltage
Before connecting the MI 3399 Application Trainer to the mains installation, the
following must be checked by the operator:

That the PE terminal is present at mains outlet which is to be used for connection
of the board.

That there are no damages noticed at the outlet (mechanical damages, broken
contacts etc.).

That there are no damages present at the board's plug and at the board itself
(damaged outlets, mechanical damages of other elements etc.)

That there is a RCD protection switch

∆
=30 mA (or any other protection switch)
involved in mains installation to be used for disconnecting the MI 3399 in case of
fault (recommendation).
The Application Trainer can be connected to nominal voltage of 230 V and 110
V. in either case the MI 3399 has full testing capabilities.
Attention!

The socket where the MI 3399 is plugged-in must be earthed, since the Application
Trainer tests for presence of voltage between the N and PE conductors. The
Application Trainer will start only if the measured voltage is below 25 V regardless
if the MI 3399 is installed in a 230 V or 110 V system.

The board is allowed to be used only in presence of properly educated person-
trainer or teacher when using it in schools.

Use only attached original material (defined technical specifications) for carrying
out required connections on front panel of the board.