OPERATION
Copyright Trace Engineering Company, Inc.
5916 - 195th Street N.E.
Arlington, WA 98223
Telephone: 360/435-8826
Fax: 360/435-2229
www.traceengineering.com
PS Series Inverter/Charger
Part No. 3597
Rev. D: November 23, 1999
Page
87
UTILITY INTER-ACTIVE OPERATION WITH UTILITY BACK-UP
The PS Series Inverter/Charger is capable of operating both as a utility inter-active and a stand-alone
inverter. This allows the system to normally sell the excess power to the utility and, once an outage has
occurred, provide power to the AC loads from the battery.
The loads that will be provided with utility back up during outages must be isolated from the non-utility
backed-up loads. This usually requires the addition of an AC load center sub panel for the output of the
inverter.
Figure 28, Utility Interactive Line-Tie System with Battery Backup (120VAC models)
TRACE PS SERIES
INVERTER/CHARGER
120 VAC
NOTE: THE BUY AND SELL METERS
CAN BE COMBINED
INTO ONE TWO-WAY METER
IF NET BILLING IS ALLOWED.
UTILITY GRID
120/240 VAC
kWh METER
WITH DETENTS
(ONE-WAY)
120/240 VAC
“BUY” METER
AC LOADS
120/240 VAC
SOLAR
ARRAY
FUSED
DISCONNECT
PV CHARGE
CONTROLLER
WIND
GENERATOR
kWh METER
WITH DETENTS
(ONE-WAY)
120/240 VAC
“SELL” METER
BATTERY
DISCONNECT
LINE-TIE SYSTEM WITH
BACKUP OF CRITICAL AC
LOADS
STORAGE
SYSTEM
AC INPUT
TERMINAL
FUSED
DISCONNECT
DISCONNECT
50A/120 VAC
DC BATTERY
TERMINALS
BREAKER
60A/120 VAC
SERVICE
ENTRANCE
PANEL
120/240 VAC
BREAKER
60A/120 VAC
CIRCUIT
BREAKERS
DISCONNECT
60A/120 VAC
NEMA 3R
OUTDOOR TYPE
BI-DIRECTIONAL
CURRENT PATH
TO THE UTILITY
SERVICE
ENTRANCE
INVERTER
AC OUTPUT
TERMINALS
AC SUBPANEL
FOR UTILITY
BACK-UP AC
LOADS
“PRODUCED”
METER
AC LOADS
TO BE
BACKED UP
120 VAC ONLY
DISCONNECT
50A/120 VAC
(OPTIONAL)
CONTROLLER
AC DISCONNECT
(LOCKABLE)
kWh METER
WITH DETENTS
(ONE-WAY)
120 VAC
“PRODUCED”
METER
NEXT TO THE
INVERTER
#6 AWG
REQUIRED
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