YASKAWA ACS-500 Bedienungsanleitung

ACS-500 AC-COUPLED

STORAGE SYSTEM

User’s Manual

Yaskawa Solectria Solar DOCR-071070 Page 2of 30

Contents

1. IMPORTANT SAFETY INSTRUCTIONS............................................................................................... 3

Hazard Symbols ....................................................................................................................... 4

Symbols on Labels.................................................................................................................... 5

2. SYSTEM OVERVIEW......................................................................................................................... 6

3. INSTALLATION................................................................................................................................. 8

Delivery ................................................................................................................................... 8

Placement and Anchoring........................................................................................................ 8

AC Wiring................................................................................................................................. 9

DC Wiring of the DC Bus De-Combiner................................................................................... 14

3.4.1 Fastening Lugs to the Studs ............................................................................................ 17

Precautions for Aluminum Wire............................................................................................. 19

Conduit Connections.............................................................................................................. 20

Heila PMC Communications (option) ..................................................................................... 21

Connection to the Internet .................................................................................................... 21

4. System Operation ......................................................................................................................... 22

Initial Commissioning Procedure............................................................................................ 22

System OFF Procedure........................................................................................................... 23

System ON Procedure............................................................................................................ 23

System Configuration............................................................................................................. 24

4.4.1 Defining the Maximum and the Minimum Battery Operational Voltage.......................... 24

4.4.2 Constant communication between PMC and inverters ................................................... 24

Control of Active Power......................................................................................................... 25

4.5.1 Active Power Limit.......................................................................................................... 25

4.5.2 Volt-Watt configuration.................................................................................................. 25

4.5.3 Frequency-Watt configuration........................................................................................ 26

Control of Reactive Power ..................................................................................................... 27

4.6.1 Method 1: Volt-VAr configuration................................................................................... 27

4.6.2 Method 2: Constant Power Factor Configuration............................................................ 28

4.6.3 Method 3: Constant Reactive Power configuration......................................................... 28

5. Specifications................................................................................................................................ 29

6. WARRANTY & RMA INSTRUCTIONS............................................................................................... 29

8. APPENDICES.................................................................................................................................. 30

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1. IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

This manual contains important instructions for model:

ACS-500

The SOLECTRIA ACS 500 AC-Coupled Storage System comprises a factory- integrated set of US-

manufactured and factory-integrated components that form the core of the system: 3 XGI 1500

Inverters, DCB1500-500 DC Bus De-Combiner, ACC1500-500 AC Combiner, and the Plant Master

Controller (PMC). The storage system is complete with the addition of customer-selected

battery system with enclosure, safety elements and controls.

This manual provides instructions for the operation of the ACS-500 AC Coupled Storage System.

In addition, please read all instructions and warnings for the associated component equipment

in their respective manuals.

This manual contains important instructions for operation of the ACS-500 AC-Coupled Storage

System. To reduce the risk of electrical shock and to ensure the safe operation of the system,

the following safety symbols are used to indicate dangerous conditions and important safety

instructions.

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Hazard Symbols

DANGER

Indicates a hazardous situation, which, if not avoided, will result in death or serious injury.

WARNING

Indicates a hazardous situation, which, if not avoided, could result in death or serious injury.

CAUTION

Indicates a hazardous situation, which, if not avoided, could result in minor or moderate injury.

NOTICE!

Indicates a hazardous condition, which, if not avoided, could result in property damage.

INFO ✔

Indicates important supplementary information to use the product effectively.

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Symbols on Labels

Table 1-1 Explanation of Symbols on Labels

SYMBOL

DESCRIPTION

DC Signal

AC Signal

Equipment Ground

Phase

Off

Positive Connection Point Symbol

Negative Connection Point Symbol

Refer to Operating Instructions

Instructions for Qualified Personnel Only

Caution: Risk of Electric Shock

Do not remove cover until 5 minutes after disconnecting all supply sources

Caution: Risk of Electric Shock

Timed Discharge

Caution: Hot Surface

Do Not Touch

Warning: Hazardous voltage area under plastic cover. Do not open fuse holders

under load. Proper PPE must be used while accessing fuses. For continued

protection against risk of fire, replace only with same make and type of fuse.

Information: For more information, please see the installation and operations

manual

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2. SYSTEM OVERVIEW

Figure 2-1 ACS-500 System Overview

The ACS-500 system is a redundant, modular energy storage solution that can be AC coupled with other

generators, such as PV or wind. The ACS-500 system comes mounted on a rack and pre-wired from the

factory. The ACS-500 can input or output 500kW and absorb or supply 300kVAr in up to 40C ambient

temperature, controlled through the pre-programmed Plant Master Controller. It can be paired with any

battery type with an equal DC voltage window. Please contact Yaskawa Solectria Solar application

engineering to verify that the voltage window of your battery and that of the ACS-500 match.

The ACS-500 system comprises 4 parts:

DC Bus De-Combiner

AC Combiner

Heila PMC (optional)

Three (3) XGI 1500–166/166-3S 166kW storage-ready inverters

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Figure 2-2 ACS-500 System Components

The customer connects the positive and negative connection of the battery system to the common bus

bars in the DC Bus De-Combiner. The DC Bus De-Combiner connects the DC to the three inverters with

the appropriate fusing. See the Chapter on DC wiring for more details.

The AC Combiner connects the AC output of the three inverters together with the appropriate fusing.

The customer connects the grounded low-voltage side of the MV transformer to bus bars in the AC

combiner. See the Chapter on AC wiring for more details.

The Heila Edge PMC controls the flow of active and reactive power through the three inverters and

monitors the state of charge (SOC) of the battery through MODBUS TCP/IP messaging. The Heila Edge

PMC draws its supply power from a 346V/120V single phase transformer and is protected by a UPS, to

be able to communicate with the ACS-500 system and the battery in case of a power outage. For more

information consult the Heila Edge PMC manual and the Chapter on Communications.

The three Solectria XGI 1500-166/166-3S inverters control the second-to-second conversion of DC power

to AC power and vice-versa. They are connected in a parent-child topology though CAN bus, where the

children follow the parent’s set points instantaneously. The system is arranged in a fully redundant

fashion; when one inverter encounters a problem the two others continue operating and take over its

load, until a repair has taken place.

ANCHOR HOLE 4X

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3. INSTALLATION

Delivery

Check for Damage: Yaskawa Solectria Solar thoroughly inspects and rigorously tests all rack-mounted

components in the ACS-500 AC-Coupled Storage System before shipment. On rare occasions damage

may occur during shipping. Upon receipt of the ACS-500 system, please do the following:

Inspect all ACS-500 system as received, pre-mounted and pre-wired on the rack.

If damage is observed, take digital photos to document the damage and immediately report the

damage to the shipping company.

If the recipient has any question about the potential shipping damage, contact Yaskawa Solectria

Solar (see Section 6 for contact information).

If Yaskawa Solectria Solar determines that any component of the ACS-500 needs to be returned,

obtain an RMA number from Yaskawa Solectria Solar and instructions for returning the unit.

Placement and Anchoring

To anchor the ACS-500 to a concrete pad, secure anchor bolts at the four anchoring provisions located

at the ends of the horizontal support bars. These anchor points have an internal diameter opening of 1”

(see Figure 2-2 ACS-500 System Components).Failure to secure the rack with anchoring bolts will render

the warranty of the ACS-500 void.

Please refer to the following installation diagram for anchoring point locations and customer conduit

locations:

Figure 3-1: Installation Diagram showing Areas Available (shaded) for Conduit

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AC Wiring

All AC Wiring is completed at the factory, within the ACC-1500-500 AC combiner box that is pre-mounted

to the ACS-500 rack.

STEP 1: Confirm that all wiring and associated components are de-energized

Confirm that the AC switch on the AC Combiner is in the OFF position.

Confirm that the AC switch on the XGI 1500 inverters (on the rack with other equipment in the

ACS-500 AC-Coupled Storage system) are in the OFF position (Fig 4.1).

Confirm there is no voltage at the terminals for the XGI 1500 inverters’ AC output conductors in

the ACC1500-500 AC Combiner.

Figure 3-2: Rotate the XGI 1500 Inverter AC Disconnect to the “Off” position

DANGER

Electric Shock Hazard: Components with hazardous voltage and energy will electrocute operator.

Operator shall avoid touching live components with hazardous voltage and energy. Verify the absence

of voltage using an appropriately rated multimeter.

STEP 2: Prepare the Enclosure for Conduits

Note the target area for conduit connections for the combined AC Output Circuit, in the conduit

installation diagram. Only the shaded area indicated should be used.

Add the holes for the conduit and fittings to the shaded area of the bottom of the AC combiner.

The AC combiner provides adequate space for 2” – 3” conduits for the 3-phase 600VAC

conductors.

Remove all metal shavings and debris from the inside of the AC Combiner.

Yaskawa Solectria Solar DOCR-071070 Page 10 of 30

WARNING

Remove all metal shavings and debris from the inside of the ACC1500-500 AC Combiner enclosure.

Figure 3-3: Interior of the ACC1500-500 AC Combiner

Figure 3-4 Bottom of the ACC1500-500 AC Combiner Showing Area Available for Conduit (shaded)

200A 600VAC Fuses, TYPE J, for ΦA,

Φb, Φc, from 3 inverters

HINGED

COVER

600A 600VAC FUSES, TYPE J, for

ΦA, Φb, Φc, combined output

from 3 inverters

DUAL BARREL LUGS for FIELD-WIRED

OUTPUT,

3-PH 600VAC, included

EQUIPMENT GROUND TERMINAL

AUX POWER, 3A FUSES

346 VAC, to the Heila Edge PMC

600A, 600VAC 3-POLE

DISCONNECT SWITCH

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