KStar E8KT - 2.3 External CT connection; 2.4 DRED Port Connections (optional, only for DRM function)

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32
The electricity meter should be mounted and connected at the grid transition point (feed-in
point) so that it can measure the grid reference and feed-in power.
1. Loosen the nut, and untangle the single-aperture sealing ring.
2. Install the waterproof component and screw on the waterproof sheath nut.
3. Open the external CT wiring port, the arrow points to the direction of the power grid, put the
wire into the external CT card slot, and buckle the buckle.
External CT should be placed near the power grid.
DRED means demand response enable device. The AS/NZS 4777.2:2015 required inverter
need to support demand response mode(DRM). This function is for inverterthat comply with
AS/NZS 4777.2:2015 standard. Inverter is fully comply with all DRM. A 8P terminal is used for
DRM connection.
Pin
Pin
1
4
3
2
Description Description
R phase CT positive electrode(White)
S phase CT positive electrode(White)
If CT test pass but inverter still can't achieve export power (power is not controllable
or always 0 power output).Please check installation location of the CT.
line L
User Manual User Manual
Figure 24
6
5
T phase CT positive electrode(White)
R phase CT negative pole(Black)
S phase CT negative pole(Black)
T phase CT negative pole(Black)
PIN
1
6
2
7
3
5
PIN Name
Description
Figure 25 DRM connector
8
4
G
V
DRM4/8
V
DRM3/7
DRM2/6
DRM1/5
DRM0
GND
5VDC Voltage Supply
Relay contact 4 input
5VDC Voltage Supply
Relay contact 3 input
Relay contact 2 input
Relay contact 1 input
Relay contact 0 input
Connected to RRCR
Not connected
Relays common node
K4-Relay 4 output
Relays common node
K3-Relay 3 output
K2-Relay 2 output
K1-Relay 1 output
K0-Relay 0 output
The inverter is preconfigured to the following RRCR power levels.
DRM0
1
1
1
1
1
0
DRM1/5
0
1
1
1
1
X
DRM2/6
1
0
1
1
1
X
DRM3/7
1
1
0
1
1
X
DRM4/8
1
1
1
0
1
X
Active Power
0%
30%
60%
100%
100%
Standby
Cos(Q)
1
1
1
1
1
1
RRCR