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Service Manual for Installers Test Instructions for the Power-Generating Unit Protection Test SUNNY CENTRAL UP / SUNNY CENTRAL STORAGE UP S M A A L U E N T R N Y C S U N ENGLISH SC-UP_SCS-UP_EZE-SG-en-10 | Version 1.0...
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Legal Provisions The information contained in these documents is the property of SMA Solar Technology AG. No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, be it electronic, mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA Solar Technology AG.
SMA Solar Technology AG Table of Contents Table of Contents Information on this Document..................... Validity ................................Target Group ..............................Levels of Warning Messages.......................... Symbols in the Document..........................Typographical Elements in the Document ...................... Designations in the Document ........................Additional Information.............................
1 Information on this Document SMA Solar Technology AG 1 Information on this Document Validity This document is valid for: • SC 4000 UP (Sunny Central 4000 UP) • SC 4200 UP (Sunny Central 4200 UP) • SC 4400 UP (Sunny Central 4400 UP) •...
Medium-voltage transformer MV transformer Sunny Central UP Sunny Central or inverter Additional Information For more information, please go to www.SMA-Solar.com. Title and information content Type of information "PUBLIC CYBER SECURITY - Guidelines for a Secure PV System Communication" Technical information For information on maintenance activities of the DC switchgear and AC disconnect unit please visit www.abb.com:...
2 Safety SMA Solar Technology AG 2 Safety IMPORTANT SAFETY INSTRUCTIONS SAVE THESE INSTRUCTIONS This section contains safety information that must be observed at all times when working. The product has been designed and tested in accordance with international safety requirements. As with all electrical or electronical devices, there are residual risks despite careful construction.
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SMA Solar Technology AG 2 Safety DANGER Danger to life due to electric shock in case of a ground fault If there is a ground fault, components that are supposedly grounded may in fact be live and components that are normally ungrounded may be grounded.
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2 Safety SMA Solar Technology AG WARNING Danger to life due to electric shock when the internal power supply is switched off After switching off the internal power supply at the load-break switch -Q62, lethal voltages are still present in the cables to load-break switch -Q62 Only after the power path has been enabled are all cables of the internal power supply de-energized.
SMA Solar Technology AG 2 Safety CAUTION Risk of injury when using unsuitable tools Using unsuitable tools can result in injuries. • Ensure that the tools are suitable for the work to be carried out. • Wear personal protective equipment for all work on the product.
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2 Safety SMA Solar Technology AG The following personal protective equipment is regarded to be the minimum requirement: ☐ In a dry environment, safety shoes of category S3 with perforation-proof soles and steel toe caps ☐ During precipitation or on moist ground, safety boots of category S5 with perforation-proof soles and steel toe caps ☐...
SMA Solar Technology AG 3 Disconnecting and Reconnecting 3 Disconnecting and Reconnecting Disconnecting the Inverter To ensure that the DC side is de-energized before opening the inverter, the inverter is equipped with measuring points for determining the DC voltage. The voltage applied on the DC side is displayed in a ratio of 1:10.
3 Disconnecting and Reconnecting SMA Solar Technology AG 10. Hook a suitable padlock into the bracket and lock it. This will ensure that the switch lever cannot reconnect inadvertently. 11. If external supply voltage is used, disconnect the supply voltage via upstream switching devices.
SMA Solar Technology AG 3 Disconnecting and Reconnecting 6. Attach magnetic signs indicating the name of the duly authorized person to the transformer panel. 7. Connect the grounding- and short-circuiting equipment to the AC busbars between the inverter and medium- voltage transformer.
4 Power-Generating Unit Protection Test SMA Solar Technology AG 4 Power-Generating Unit Protection Test The power-generating unit protection test is a fundamental part of PV system certification. For existing systems the protection test is part of the certificate, for new systems it is part of the declaration of conformity. The power-generating unit protection test helps grid operators and the certifying body to understand the proper parameterization and function of the protection concept.
SMA Solar Technology AG 4 Power-Generating Unit Protection Test Formula Symbol Unit Explanation TrfVolExHi** Voltage on the high-voltage side of the external transformer (parame- ter) * This parameter takes the level of the medium voltage into account. For , the voltage at the grid feed-in point as contractually agreed VolRtg with the grid operator, must be entered for VRtg.
4 Power-Generating Unit Protection Test SMA Solar Technology AG Performing the Power-Generating Unit Protection Test Materials required for test: ☐ Three-phase testing device with the following properties: – Trigger function for monitoring the potential-free contact – Voltage range (depends on the power class, see operating manual) up to 759 V (line-to-line) with accuracy better than 0.1%...
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SMA Solar Technology AG 4 Power-Generating Unit Protection Test • Voltage drop protection V<<<<<< / t with the parameters VCtl.Lo6Lim and VCtl.Lo6LimTm V<<<<<< • Frequency increase protection f> / t with the parameters HzCtl.Hi1Lim and HzCtl.Hi1LimTm V> • Frequency drop protection f<< / t with the parameters HzCtl.Lo1Lim and HzCtl.Lo1LimTm...
5 Contact SMA Solar Technology AG 5 Contact If you have technical problems with our products, please contact the SMA Service Line. The following data is required in order to provide you with the necessary assistance: • Device type • Serial number •...
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Toll free for Australia: SMA Online Service Center: 1800 SMA AUS www.SMA-Service.com (1800 762 287) International: +61 2 9491 4200 United Arab SMA Middle East LLC India SMA Solar India Pvt. Ltd. Emirates Abu Dhabi Mumbai +971 2234 6177 +91 22 61713888 SMA Online Service Center: www.SMA-Service.com ไทย Service Partner for String inverter: 대한민국...
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