Grounding - Lab.gruppen D 200:4L Quick Start Manual

Connecting the amplifier in three phase delta configuration
In three-phase configuration where the phases are 120 degrees apart, one can connect three balanced loads in a
delta configuration. The connection is made between the phases instead of between the neutral and a phase.
L1 L2
N
L3
3 phase Y 120V
Three phase delta configuration
Connecting the amplifier in a split phase configuration
In two phase split-phase configuration there are two phases separated by 180 degrees. Connecting between the
phases gives double the line voltage.
100V 100V
L1 N L2
Amp Amp
Split phase 100V
Two phase split-phase configuration

10. Grounding

Use correctly-shielded balanced audio input connections to minimize hum and interference.
D Series must be grounded (earthed) with the safety ground pin to the mains distribution system.
NEVER disconnect the earth (ground) pin on the mains cable (AC power cord).
L1 L2
Amp
N
L3
3 phase delta 208V
200V
L1 L2
Amp
N
Split phase 200V
D SERIES Lake Quick Start Guide rev 2.0.0
10. Grounding
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