Kaco Powador 2002 Operating Manual page 12

Description
DE Country-specifi c function
NSp.
3.2.6.4 Control procedure cos phi (P/Pn)
The control procedure cos phi (P/Pn) off ers the option of defi ning up to 10 nodes (minimum of 2) for
shift factor cos phi. A node is defi ned by the relevant pair of values (Specifi cation of an active power in
% based on a nominal power of the device and an associated cos phi value.)
In the delivery state cos phi is activated with a predefi ned characteristic.
This characteristic, which consists of three individual nodes, depends on the rated AC power of the
inverter.
cos φ
0.9
1
0.9
Figure 4: Control procedure as per cos phi (P/pn)
P AC ,nom < 13.8 kVA
1. node 0 % P/ PN - - cos phi 1.000
2. node 50 % P/ PN - - cos phi 1.000
3. Node 100 % P/ PN - - cos phi 0.950 under-excited (u)
To meet the requirements for reactive power feed even at system level, the inverters must be adjusta-
ble in the range from cos phi 0.8 over-excited (o) and 0.8 under-excited (u).
3.2.7 Mechanical components
3.2.7.1 DC disconnect
There is one DC disconnect in the inverter housing. The DC disconnect is used to disconnect the inverter from the
PV generator in order to carry out service.
Figure 5: DC disconnect
Page 12
overexcited (o)
0,2 0,5
1
underexcited (u)
Characteristic with 2 nodes
Characteristic with 3 nodes
P /Pn
Disconnecting the inverter from the PV generator
 Switch the DC disconnects from 1 (ON) to 0 (OFF).
Connecting the inverter to the PV generator
 Switch the DC disconnects from 0 (OFF) to 1 (ON).
Operating Instructions for Powador 2002-6002_EN