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SMA Solar Technology AG
☐ Only one grid type must be connected per measuring module.
☐ If measurement takes place via voltage converters in a 3-conductor utility grid, the neutral conductor at the
voltage converter input must be grounded separately. When doing so adhere to the voltage converter
specifications (see manual of voltage converter).
☐ When using a voltage converter, the phase shift generated by the voltage converter may not exceed 1 (see
manual of voltage converter).
☐ The cables must be protected in accordance with the locally applicable standards and directives.
☐ The requirements for the measurement inputs of the product must be complied with (see Section 10, page 63).
☐ The measurement inputs outside of the product must at least be protected with external miniature circuit breakers
of type B1A. Miniature circuit breakers with a higher tripping characteristic may not be installed.
☐ The external miniature circuit breakers must be installed in close proximity to the product.
☐ At the measuring points, a maximum effective voltage of 480 V may be present between line conductor and line
conductor. SMA Solar Technology AG recommends installing an overvoltage protection with the overvoltage
category III.
Cable requirements:
• Conductor type: copper wire
• Conductor cross-section: 1.5 mm² to 2.5 mm² (16 AWG to 14 AWG)
• Maximum cable length: 30 m (98 ft)
SMA Solar Technology AG recommends using a 10-conductor cable with a conductor cross-section of 2.5 mm²
(14 AWG) to connect the current- and voltage-measurement device of the product.
Procedure:
1. Insert the cable into the product (see Section 6.10.1, page 55).
2. Connect the insulated conductors in accordance with the customer-specific system circuitry (see Section 6.10.2,
page 56).
3. Ensure that a right-hand rotating magnetic field is present at the three-phase voltage measuring input.
4. Ensure that the insulated conductors are firmly in place.
5. Check whether the jumpers are correctly inserted for the selected voltage measurement:
• If a voltage measurement device without a voltage converter is connected in the 4-conductor utility grid,
never bridge the neutral conductor and grounding conductor for this voltage measurement. Ensure that there
are no jumpers plugged into the affected terminals of the terminal block X200 (see Section 6.4.2, page 36).
• If a voltage-measurement device is connected via a voltage converter in the 4-conductor utility grid, the
neutral conductor and the grounding conductor must always be bridged for this voltage measurement. Plug
the supplied red jumpers into the affected terminals of the terminal block X200 (see Section 6.4.2, page 36).
• If a 3-conductor utility grid is connected, the neutral conductor and the grounding conductor must be bridged
during each installed voltage measurement. Plug the supplied red jumpers into the affected terminals of the
terminal block X200 (see Section 6.4.2, page 36).
6.5
Internal Communication Network
6.5.1
Requirements for the Internal Communication Network
All devices of which the product directly requests data or which the product controls directly must be integrated in the
internal communication network. These devices include the inverters, the gensets, the SMA communication devices and
the optional Data Acquisition Module.
The following requirements for the internal communication network must be observed at all times.
☐ Only the product and devices of which the product directly requests data or which the product controls directly
may be connected to the internal communication network.
Installation Manual
6 Electrical Connection
PPM-10-IA-en-16
45
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