7 Electrical Connection
SMA Solar Technology AG
Operating manual
SHP-US-20-BE-en-10
31
7.2
Connecting the AC Cable
AC cable requirements:
☐ Aluminum or copper cables must be used.
☐ The cable must be made of stranded wire or fine-stranded wire. When using fine stranded
wire, bootlace ferrules must be used.
☐ The maximum permitted temperature for the terminal block of the AC connection of 90°C must
be observed.
☐ Cable cross-section L1, L2, L3: 50 mm² to 150 mm² (300 kcmil to 1 AWG)
☐ Cable cross-section grounding conductor when using copper cable: 10 mm² to 50 mm²
(1/0 AWG to 6 AWG)
☐ Cable cross section grounding conductor when using aluminium cable: 25 mm² to 50 mm²
(1/0 AWG to 4 AWG)
☐ Maximum permissible temperature: 90°C
Requirement:
☐ A suitable medium-voltage transformer must be available.
Required material (not included in the scope of delivery):
☐ Protective grease (only for conductors made of aluminum)
Procedure:
1. Ensure that the AC circuit breaker is switched off and that it cannot be reconnected.
2. Shorten the cable if necessary.
3. Strip the cable.
4. Strip off the insulation of L1, L2, L3, and PE by 30 mm (1.2 in).
5. Remove any cable remnants from the product.
6. For conductors made of aluminum, remove any
oxide film and apply protective grease to the
conductors.
Summary of Contents for SHP 125-US-20
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