19
PVC - ISOLATED CABLES YVV (NYY) SUITABLE TO 0.6/1KV VDE NORMS AND TS
4.12.3 Loading:
When planning the electrical
distribution system, it is important to ensure that
a balanced load is presented to the generating
set. If loading on one phase is substantially higher
than the other phases it will cause overheating
in the alternator windings, imbalance in the phase
to phase output voltage and possible damage to
sensitive 3 phase equipment connected to the
system. Ensure that no individual phase current
exceeds the current rating of the generating set.
For connection to an existing distribution system,
it may be necessary to reorganize the distribution
system to ensure these loading factors are met..
4.12.4 Power Factor:
The power factor (cosø)
of the connected load should be determined.
Power factors below 0.8 lagging (inductive) can
overload the generator. The set will provide its
kilowatt rating and operate satisfactorily from 0.8
lagging to unity power factor (1.0). Particular
attention must be given to installations with power
factor correction equipment such as capacitors
to ensure that a leading power factor is never
present. This will lead to voltage instability and
may result in damaging overvoltages. Generally
whenever the generating set is supplying the load
any power factor correction equipment should
be switched off.
Table 4.6
Current carrying capacity of power cables PVC insulated conductors in accordance with VDE 0298
Wire
Section
(mm
2
)
2.5
4
6
10
16
25
35
50
70
95
120
150
185
240
Multiple
Core
36
46
58
77
100
130
155
185
230
275
315
355
400
465
25
34
44
60
80
105
130
160
200
245
285
325
370
435
22
30
38
53
71
94
114
138
176
212
248
283
322
380
25
33
42
57
76
101
123
155
191
228
267
305
347
-
21
28
36
50
67
8/8
110
138
170
205
245
271
310
-
Multiple
Core
Multiple
Core
Single
Core
HO7RN-F
Soil
%25ºC @ Air
%40ºC @ Air
0,6/1 KV, YVV type Cable Current Capacity
