GRIT by FEIN
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Sahre / MVK 04 / 2009
Hedenstedt / Grit
Test instructions referring to VDE 701 / part 1
Grit
– belt grinders are basicly placed in
protection class 1.
After repairing or changing of motor, switch or cable etc. each belt grinder must be
electrical tested referring to
VDE 701/part 1
as shown in the list below.
1.
protective earth
conductor test
1. Activate
Measuring points: machine housing against PE on the plug
Open circuit voltage on the measuring device: 4 V - 24 V, AC or DC
Measurment current: min. 0.2 A
Testing time: 3 sec
PE resistance: max. 0.3 Ohm with 5 m long mains power cable
2.
Insulation
resistance
measurement
1. Activate
2. Connect L1 and N to plug
3. Motor switch "ON"
Measuring points: machine housing against L1, L2, L3
Testing time: 3 sec
Testing voltage: 500 V DC
Insulation resistance: min 2.0 M Ohm
3.
High voltage test
1. Activate
2. Connect L1 and N to plug
3. Main switch "ON"
Measuring points: Machine against L1, L2, L3
Testing time: 3 sec
Testing voltage: 1000 V AC
Trip circuit: 5mA > overload relay must not respond
