Fronius TP 1500, Руководство по обслуживанию

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Important ! Special testing equipment is needed for testing the PE conductor.
- Cross-sectional area of PE conductor: 1.5 mm²
- Adjust the PE-conductor testing unit to work with this cross-sectional area
- Test current = 10 A
- Place the test-prod of the PE-conductor testing unit up against the front fixing screw
and hold it there, as shown in Fig. 22
- Press and hold the “Test” button of the PE-conductor testing unit until the unit gives a
confirmatory signal
- Permissible voltage drop at 10 A < 2.6 V
- Permissible PE-conductor resistance < 2.6 V / 10 A < 260 mOhm
- If the testing unit does not give any confirmatory signal, the PE conductor is faulty
- Check how the PE conductor has been installed inside the housing
- Where necessary, re-install the PE conductor inside the housing
- Mains cable is faulty
- Where necessary, replace the mains cable
Important ! A suitable measuring unit is
needed for the insulation test.
Insulation test
Fig.23 Insulation test - Primary circuit / secondary
circuit
Fig.24 Insulation test - Primary circuit / earth
PE conductor
test
(continued)
Warning! An electric shock can
be fatal. The testing unit works
with high voltage. Never touch
the test-prods!
The test voltage of the testing unit is
approx. 2.5 kV.
1st test: Primary circuit / secondary
circuit
- Place a test-prod against one of the
contacts of the mains plug (Fig.23)
- Place the second test-prod against one
of the welding sockets (e.g. (+) socket)
(Fig.23)
- Carry out the measurement
- Insulation resistance must be > 5
MOhm
If the insulation resistance is less than 5
MOhm, the power source must be
inspected and repaired
- Main focus of test: Transformer
2nd test: Primary circuit / earth
- Place a test-prod against one of the
contacts of the mains plug (Fig.24)
- Place the second test-prod against the
protective contact of the mains plug
(Fig.24)
- Carry out the measurement
- Insulation resistance must be > 2.5
MOhm
If the insulation resistance is less than 2.5
MOhm, the power source must be
inspected and repaired
- Main focus of test: Transformer,
transistor module on LCA15 board