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3.9.2 Acrel Meter
Meter Zero mode enables the Savant Power Storage 20 to power non-backed up loads to offset utility consumption while grid connected. Meter Zero
mode requires the use of an external power meter. The Acrel AGF-AE-D/200 meter used for this application must be purchase separately. Reach out
to Savant Support for more information.
1.
Mount the meter in the appropriate location using DIN rail.
2.
Install split-core CTs on mains feeding the loadcenter (one CT per phase).
NOTE: Ensure the arrow of the CT is pointing toward the main breaker, otherwise CT measurement will be inaccurate.
3.
Connect CTs to the CT input on the Acrel meter for the corresponding phase where CT is installed.
4.
Tap the mains and feed tap into the L1/L2/N terminals of the Acrel meter.
5.
Connect the RS485 A+ and B- terminals of the Acrel Meter to the RS485-1 RJ45 input of the Power Storage inverter at pins 7 and 8, respectively,
as shown below.
RS232
Savant Power Storage 20 Installation Guide
009-2401-00 | 090623
RS485-1 Port
BCMS
1 2 3 4 5 6 7 8
RS485-1
DC 12V
7 RS485A
8 RS485B
RS485-1 Port
CT Directon
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Copyright 2023 Savant Systems, Inc
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