Operation On Genset - Alpes Technologies LEGRAND ALPIMATIC Notice D'installation

Diagram 1: Current Transformer only supplying the Power Factor Controller
phase L1 of network
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Diagram 2: Current Transformer already supplying an ammeter
phase L1 of network
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Particular cases:
• If the installation has an existing C.T you may use it, provided it meets recommendations on page 25
(position, characteristics, power, etc.).
In this case, the power factor controller is connected in series with the existing ammeter (diagr.2).
• If the installation has two or more power transformers in parallel, compensated by a single
capacitor bank, you must plan:
- one C.T on phase L1 of each transformer
- one overall C.T, adding type 5 + 5 ... / 5 A
In this case, the equivalent C.T primary to be programmed in the controller is calculated by adding the
primary values of each C.T.
C - OPERATION ON GENSET
If the installation can be powered by a generator unit in the event of a mains power cut, we recommend
to automatically disconnect the capacitor bank when the generator is operating.
To achieve this, simply remove the shunt between terminals G and E (see diagrams pages 33- 34) and
connect between them a contact which is opened when the generator is operating.
When the generator is started, the capacitor bank will be disconnected automatically.
.
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Network P1
C.T.
S1
S1 S2
Network P1
C.T.
S1
S1 S2
Page 26
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P2 load
S2
Capacitor bank auxiliary terminal block
P2 Load
S2
A
Capacitor bank auxiliary terminal block