Electronic Solar Switch
DC circuit breaker for SMA inverters
User manual
EN
ESS-BEN074812
TBE-ESS
SMA Technologie AG Table of Contents
Table of Contents
1 Notes on this Manual. . . . . . . . . . . . . . . . . . . . . . 5
1. 1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1. 2 Target Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1. 3 Storing the Documentation. . . . . . . . . . . . . . . . . . . . 5
1. 4 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Electronic Solar Switch (ESS) . . . . . . . . . . . . . . . . 8
3. 1 Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3. 2 Installing the Inverter. . . . . . . . . . . . . . . . . . . . . . . . 9
4 Operating the Electronic Solar Switch . . . . . . . . 10
4. 1 Connecting the solar generator (DC) . . . . . . . . . . . 10
4. 2 Disconnecting the Inverter . . . . . . . . . . . . . . . . . . . 11
5 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Contact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
User manual ESS-BEN074812 3
Table of Contents SMA Technologie AG
4 ESS-BEN074812 User manual
SMA Technolo gie AG Notes on this Manual
1 Notes on this Manual
1. 1 Validity
This user manual describes the correct use of the Electronic Solar Switch for disconnecting a solar generator from an SMA inverter.
1. 2 Target Group
Only qualified electrical personnel may operate the Electronic Solar Switch and carry
out work on the inverter.
1. 3 Storing the Documentation
This manual, just as all other manuals for the inverter and its installed components, must
be kept in the immediate vicinity of the inverter, and must be accessible at all times.
User manual ESS-BEN074812 5
Notes on this Manual SMA Technologie AG
1. 4 Symbols Used
The following three types of safety warnings and general information are used in this
document:
DANGER!
"DANGER" indicates a hazardous situation which, if ignored, will result in serious injury or death!
WARNING!
"WARNING" indicates a hazardous situation which, if ignored, could result in
serious injury or death!
CAUTION!
"CAUTION" indicates a situation which, if ignored, could result in damage to
property!
Notice
A notice provides information which is important for the optimal operation of
your product.
6 ESS-BEN074812 User manual
SMA Technolo gie AG Safety
2 Safety
DANGER!
High voltages in inverter - danger of death!
• Work on the inverter may only be carried out by qualified electrical personnel.
• Open and close the inverter only as indicated in the corresponding Installation Guide.
CAUTION!
Entry of water and foreign matter into the inverter can cause irrepara-
ble damage!
Once the handle of the Electronic Solar Switch is pulled out, the protection degree of the inverter is reduced to IP21.
• Do not operate the inverter with a pulled Electronic Solar Switch.
User manual ESS-BEN074812 7
Electronic Solar Switch (ESS) SMA Technologie AG
3 Electronic Solar Switch (ESS)
With the Electronic Solar Switch, disconnecting the inverter becomes a three-step process.
1. Disconnecting the AC side
2. Pulling the Electronic Solar Switch.
3. Disconnecting the DC plugs
If the Electronic Solar Switch is not pulled off, removal of the DC plug connectors can
cause arcing, which may cause personal injury and may damage the inverter connectors. Section 4 „Operating the Electronic Solar Switch” (Page 10) describes how to disconnect the DC side.
DANGER!
Risk of lethal electric shock!
Safe disconnection from the solar generator can only be guaranteed once the
Electronic Solar Switch handle and all DC plug connectors have been pulled
off.
• After pulling off the Electronic Solar Switch, immediately disconnect all
DC plug connectors.
3. 1 Assembly
The Electronic Solar Switch consists of a handle on the underside of the inverter, and a module inside the inverter.
A handle, which covers the plugs on the solar generator,
is mounted on the underside of the inverter.
There is a plug inside the handle. The plug
of the Electronic Solar Switch is only visible when the handle is pulled out.
The plug is fitted in the handle as a floating connector, so that the handle does not
catch when pulled from the inverter.
8 ESS-BEN074812 User manual
Electronic Solar Switch handle
Plug
SMA Technolo gie AG Electronic Solar Switch (ESS)
Warning!
Risk of lethal electric shock!
Faultless functioning of the Electronic Solar Switch can only be guaranteed
with a floating plug inside the device.
• Do not tighten the connector's screws in order to prevent them from catching when pulling off the device.
3. 2 Installing the Inverter
Installing the Inverter
When installing the inverter, be sure to observe all instructions in the inverter's
installation guide! It describes the special features relating to the installation
with an Electronic Solar Switch.
Minimum Clearance
Keep at least 50 cm free underneath the inverter so
that you have enough space to pull out the Electronic
Solar Switch.
User manual ESS-BEN074812 9
Operating the Electronic Solar Switch SMA Technologie AG
4 Operating the Electronic Solar Switch
4. 1 Connecting the solar generator (DC)
To connect the solar generator, proceed as follows:
1. Check the Electronic Solar Switch for wear as described in chapter 5.
2. Connect the DC plug connectors.
Make sure the polarity is correct.
3. Close all unused DC input sockets with the caps included in the delivery.
4. Plug the Electronic Solar Switch into the socket on the
underside of the inverter.
CAUTION!
Incorrect plugging of the Electronic Solar Switch could cause high volt-
age and may damage the device!
• Plug the handle tightly into the socket on the inverter so that it fits closely
with the case.
• Make sure that it is positioned securely.
5. Switch on the circuit breaker.
The inverter LEDs will glow if the solar generator is ready for operation.
10 ESS-BEN074812 User manual
SMA Technolo gie AG Operating the Electronic Solar Switch
4. 2 Disconnecting the Inverter
Disconnecting the inverter is a three-step process. Proceed as follows:
1. Switch off the circuit breaker.
2. Pull off the Electronic Solar Switch.
Be sure to pull the handle downwards and slightly
towards the wall. There is a contact in the middle
which automatically triggers the switching process
when the handle is pulled.
3. Then immediately disconnect the solar generator
from the inverter by removing all DC plug connectors.
Be aware that the inverter is not voltage-free beforehand.
DANGER!
High voltages in the inverter - danger of death!
• Make sure that the inverter is voltage-free before working on it.
User manual ESS-BEN074812 11
Inspection SMA Technologie AG
5 Inspection
Check the Electronic Solar Switch for wear before plugging it in.
Check if the metal tongues inside the plug show brown discolorations.
Metal tongues
The Electronic Solar Switch can no longer safely disconnect the DC side if one of the
metal tongues is completely worn out (see figure below). Replacements for damaged
Electronic Solar Switch handles are available from SMA.
worn-out metal tongues
12 ESS-BEN074812 User manual
SMA Technolo gie AG Technical Data
6 Technical Data
Electrical lifetime
(in case of a short circuit, with a nominal current
of 35 A):
Max. switching current 35 A
Max. switching voltage 800 V
Max. PV power approx. 12 kW
Protection degree when plugged in IP65
Protection degree when unplugged IP21
min. 50 switching processes
User manual ESS-BEN074812 13
Contact SMA Technologie AG
7 Contact
If you have any questions or technical problems concerning the Electronic Solar Switch,
please contact our hotline. Please have the following information ready when you contact SMA:
• Inverter type
• Type and number of modules connected
• Communication type
• Inverter's serial number
• Inverter's blink code or display
Address:
SMA Technologie AG
Hannoversche Strasse 1 - 5
34266 Niestetal
Germany
Tel.:+49 (561) 95 22 - 499
Fax:+49 (561) 95 22 - 4699
serviceline@SMA.de
www.SMA.de
14 ESS-BEN074812 User manual
SMA Technolo gie AG Legal Notices
The information contained in this document is the property of SMA Technologie AG. Publishing its content,
either partly or in full, requires the written consent of SMA Technologie AG. Any internal company copying of
the document for the purposes of evaluating the product or its correct implementation is allowed and does not
require permission.
Exclusion of liability
The general terms and conditions of delivery of SMA Technologie AG shall apply.
The content of this document is continually checked, and amended where necessary. However, discrepancies
cannot be excluded. No guarantee is made for the completeness of this document. The latest version is available online at www.SMA.de or from the usual sales channels.
Guarantee or liability claims for damages of any kind are excluded if they are caused by one or more of the
following:
• Damages during transportation
• Improper or inappropriate use of the product
• Operating the product in an unintended environment
• Operating the product whilst ignoring relevant, statutory safety regulations in the deployment location
• Ignoring safety warnings and instructions contained in all documents relevant to the product
• Operating the product under incorrect safety or protection conditions
• Altering the product or supplied software without authority
• Product malfunction due to operating attached or neighboring devices beyond statutory limit values
• Unforeseen calamity or force majeure
The use of supplied software produced by SMA Technologie AG is subject to the following conditions:
• SMA Technologie AG rejects any liability for direct or indirect damages arising from the use of software
developed by SMA Technologie AG. This also applies to the provision or non-provision of support activities.
• Supplied software not developed by SMA Technologie AG is subject to the respective licensing and liability
agreements of the manufacturer.
Warranty Guarantee
The current guarantee conditions come enclosed with your device. These are also available online at
www.SMA.de and can be downloaded or are available on paper from the usual sales channels if required.
Trademarks
All trademarks are recognized, even if they are not marked separately. Missing designations do not mean that
a product or brand is not a registered trademark.
SMA Technolo gie AG
Hannoversche Strasse 1-5
34266 Niestetal
Germany
Tel. +49 561 9522-0
Fax +49 561 9522-100
www.SMA.de
Email: info@SMA.de
© 2004 to 2007 SMA Technologie AG. All rights reserved.
User manual ESS-BEN074812 15
www.SMA.de
Sales
Solar Technology
SMA Technologie AG
Hannoversche Strasse 1–5
34266 Niestetal, Germany
Tel. : +49 561 9522 4000
Fax: +49 561 9522 4040
E-mail: sales@SMA.de
Freecall: +800 SUNNYBOY
Freecall: +800 78669269
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