EPS PSB 10000 4U, Руководство по эксплуатации

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© EPS Stromversorgung in 2022, this information is subject to change without notice 35 30000800_manual_psb_10000_4u_30kw_en_04
2.3.5 Connection to AC supply
• Connection to an AC supply must only be carried out by qualified personnel and the device must always
be run directly on a power grid (transformer are permitted) and not on generators or UPS equipment!
•
Cable cross section must be suitable for the maximum input current of the device! See tables below.
•
According to standard EN 61010, the device must be fused externally and the fuse rating must be appro-
priate to the maximum AC current rating and AC cable cross section
•
Ensure that all regulations for the operation of the device and connection to the public grid of energy
recovering equipment have been considered and requirements have been met!
•
WC models: For safety reasons it’s recommended to install a 30 mA RCD for every water-cooled unit
(option WC) or at least one per three units (due to the possible leak current, see technical data), in case
multiple WC models run in parallel
All standard models in this series, as produced since approx. 01/2022, support to run either on 380/400/480 V or also 208 V
(US and Japan grids). When running a model with 30 kW power rating on 208 V it would automatically switch into derated
power mode in which the available DC power is decreased to 18 kW. This is detected every time when powering the device,
so that the same model could provide the full 30 kW of rated power when being run on 380/400/480 V.
The so-called “US208V” models are special models which only run on 208 V supply and thus have a rigid rated power of
18 kW or 10 kW. They cannot operate on higher AC supply voltages.
2.3.5.1 AC supply requirements
No matter what particular variant the device is, standard, WC or Slave, the rated AC supply voltage on the type label is deci-
sive. They all use a regular three-phase supply without N. Specification:
Rated DC power Inputs on AC plug Supply type Configuration
10 kW / kW L1, L2, L3, (N), PE Three-phase (3P) Delta
The PE conductor is imperative and must always be wired to the AC plug!
2.3.5.2 Cross section
For the selection of a suitable cable cross section the rated AC current of the device and the cable length are decisive. Based
on the connection of a single unit the table lists the maximum input current and recommended minimum cross section for
each phase:
L1 L2 L3 PE
(1
Available DC power ø I
max
ø I
max
ø I
max
ø
10 kW (rated)
≥10 mm²
(AWG8)
40 A
≥10 mm²
(AWG8)
40 A
≥10 mm²
(AWG8)
40 A
≥10 mm²
(AWG8)
18 kW (derated or US208V) at 208 V
30 kW (rated) at 380/400/480 V
≥10 mm²
(AWG8)
61 A
≥10 mm²
(AWG8)
61 A
≥10 mm²
(AWG8)
61 A
≥10 mm²
(AWG8)
2.3.5.3 AC plug & AC cable
The included connection plug can receive cable ends of up to 25 mm². The longer the connection cable, the higher the volt -
age loss due to the cable resistance. Therefore the mains cable should be kept as short as possible or have an even bigger
cross section. Cables with 4 or 5 conductors can be used. When using a cable with N conductor, it’s allowed to clamp it into
the spare pin of the AC plug. Ratings of the AC plug:
•
Max. cross section without cable end sleeve: 25 mm² (AWG4)
•
Max. wire cross section with cable end sleeve: 16 mm² (AWG10)
• Stripping length without cable end sleeve: 18-20 mm (0.75 in)
1 Valid for both, the ground conductor in the AC cable and the separate PE line for enclosure grounding