Growatt ATS-US Series User manual

Introduction
1.
The location of ATS-US in the system
2.
The Auto Transfer Transformer (ATS-US) controls the switch of the contactors to provide power to the critical load stated as EPS Emergency
Power Supply load in both grid-tied and off-grid conditions. There is a contactor in ATS-US to provide user a simple connection. ATS-US is
operating with PCS inverter for the purpose of providing the split phase power when grid accidentally or unexpectedly goes off. This
approach allows the home critical contunously to be supplied.
Configuration
3.
As shown in chart 2.1, the input side of ATS-US is connected with
EPS output of hybrid inverter and grid, the output side is
connected with critical load stated as EPS load. EPS Load is set
default to connect with Grid power.If Grid is lost, EPS Load will
turn the switch to EPS output of hybrid inverter. And there is a
transformer in ATS-US, it can transform 240V to 120/240V split
phase to provide the power to critical load.
AC
Brea ker
Brea ker
Hybrid Inver ter
DC
Brea ker
AC
Brea ker
Sensor
Load
PV Array Battery
EPS Grid
Electrical Grid
ATSE
Load
EPS
Auto transformer
RSD1
Model name
ATS-US
Grid Rated Voltage
240V
Grid Rated Frequency
50 /60Hz
Grid Rated Current
21 a.c.A ,48 a.c.A
EPS Rated Voltage
240V
EPS Rated Frequency
50 /60Hz
EPS Rated Current
21 a.c.A,48 a.c.A
Load Rated Voltage
120/240V
Load Rated Current
21 a.c.A,48 a.c.A
Load Rated power(L-L)
5000VA,11400VA
Load Rated balanced power(L-N)
5000VA,11400VA
Load Rated unbalanced power(L-N)
3000W
Cooling Concept
Natural
Ingress Protection
IP65/NEMA type 4X
Installation
Wall Mountable
Operation Ambient Temperature
-25℃~+50℃(-13 to+122°F)
Weight
15.6kg/34.3lb
Size
480*275*105mm/18.9*10.8*4.1in
General Information - Parts List
4.
Part List
Item
Item Name
Qty
Item
Item Name
Qty
A
ATS-US (Auto
Transfer
Transformer）
1
E
Fixing screws
2
B
User Manual
1
/
/
/
C
Anchor Bolt
3
/
/
/
D
Key
2
/
/
/
Dimension & Weight
5.
Dimension (L x W x H): 480*275*105mm/18.9*10.8*4.1in
Weight: 15.6KG/34.3lb
Tools
6.
NO.
Description
1
Press terminal connector
2
Screw driver
3
Knock explosion bolt
4
Drill holes on the wall
Wall Mount Installation
7.
a. Please reserve the space of 300mm (11.81in) from ATS-US.
b. Place the wall bracket horizontally on the wall and mark the
position of 3 holes for screws.
c. Remove the wall mount and drill 3 holes were marked, Drill
holes with φ10 drill Depth: at least 40mm (1.575in).
d. First knock expansion pipe into the hole with Rubber
hammerand then place the wall bracket align with the marked
position on the wall. Last, screw the self-tapping screwing into
the expansion pipe.
e. Tighten the screws on both sides of the wall bracket.
Open the ATS-US
8.
As shown above, please put the key into the Keyhole on the ATS-
US top right and bottom right and clockwise rotation to 90°.The
cover can be opended. Rotate 90 ° counterclockwise to remove the
key. The cover can be pressed directly to close the cover.
(E)
(D)
(A) (C)
(B)
ab
ab
ab
ab
以上图形a代表ATS 5000T-US,b代表ATS 11400T-US Above a:ATS 5000T-US,b:ATS 11400T-US
ATS -US Series Quick Guide
ab

ATS-US usage methods
10.
Wiring Connection
9.
9.1 Wires Making
1. Wires below are needed before installation.
Cable description
Cable
Type
Conductor Cross-
sectional Area Range
Source
AC GRID power
cable
1.Use cables that can withstand
90°C (194°F) or 105°C (221°F).
2.use four single-core outdoor
copper cables (L1, N, L2, PE).
L1, N, L2:10–6 AWG
PE: 6 AWG
Purchased by
customer
EPS power cable
1.Use cables that can withstand
90°C (194°F) or 105°C (221°F).
2.Two single-core outdoor copper
cables (L1 and L2)
12–6 AWG
Purchased by
customer
EPS output power
cable
1.Use cables that can withstand
90°C (194°F) or 105°C (221°F).
2.use four single-core outdoor
copper cables (L1, N, L2, PE).
L1, N, L2:10–6 AWG
PE: 6 AWG
Purchased by
customer
2. Use the diagonal plier to trip 15mm of insulation from one side of the 10AWG wires (7pcs).
Use the diagonal plier to trip one side of GND wire about 7mm (3pcs).
9.2 BACKUP Connection
1.Use the screwdriver to loosen screws in positions L1 and L2 at the contactor’s BACKUP inputs.
2.Insert L1 and L2 of the backup conductors into the BACKUP input terminals of L1 and L2.
3.Tighten to 2.5Nm.
4.Use the screwdriver to secure the backup EGC to the grounding bus bar.
9.4 LOAD Connecrion
After connecting the ATS-US internal wire, close the cover and the GRID and EPS end of the ATS-US are respectively connected with the AC
GRID and EPS output of inverter, EPS load end access load. Run the system, loaded into normal operation.
Trouble shooting
11.
1. In the process of use, if EPS load does not work in on-grid condition, please turn off the inverter and turn off the switch of grid input. Then
open the ATS-US cover, check the GRID and EPS LOAD line is connected properly.
2. If there is no power in load in off-grid condition, please turn off the inverter and open the ATS-US cover, check the control line, the EPS
wiring and the EPS LOAD wiring is properly.
1. Please use the equipment within the scope of specification. Excessive current or voltage may cause device damage.
2. To avoid personal injury due to energy hazard, remove wristwatches and jewelry when repairing. Use tools with insulated handles.
3.The rated power of secondary side L1-N and L2-N could up to 5KVA respectively,and power difference between the tow split phases can not
exceed 3KW.
4.Don't connect N of ATS together with N of grid.
5.Don't connect N of ATS to PE of ATS or PE of grid.
6. Repair is to be performed only by qualified technical personal authorized by manufacturer.
The rated balanced power(L-N)means the Load of L1-N and L2-N is equal.
The rated unbalanced power(L-N)means the load of L1-N and L2-N is different.
Caution
12.
GR-UM-198-A-06
a
8b
8
a
b
9.3 GRID Connection
b
ab
b
a
9.5 Checking
Please make sure that all wiring in the ATS-US is tightened.
Picture above a:ATS 5000T-US,b:ATS 11400T-US
10AWGab
8AWG
10AWGab
8AWG
10AWGab
8AWG
10AWGab
8AWG
10AWGab
8AWG
Picture above a:ATS 5000T-US,b:ATS 11400T-US
以上图形a代表ATS 5000T-US,b代表ATS 11400T-US Picture above a:ATS 5000T-US,b:ATS 11400T-US
a
Growatt New Energy
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Manual
1. Use the screwdriver to loosen screws in positions L1 and L2 at the contactor's GRID inputs.
2. Insert L1 and L2 of the GRID conductors in to the GRID input terminals of L1 and L2.
3. Tighten to 2.5Nm.
4. Use screwdriver to secure the GRID EGC to the grounding bus bar.
1. Use the screwdriver to loosen the three screws on the LOAD terminals.
2. Insert L1, L2, and N of the LOAD conductors in to the L1 ,L2, and LOAD terminals.
3. Tighten to 3.5Nm.
4. Use screwdriver to secure the LOAD EGC to the grounding bus bar.