heinzinger ERS Compact Series, Руководство пользователя, Страница: 42 / 114

Heinzinger electronic GmbH
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Germany
Page 42
ERS COMPACT
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. The device should furthermore be fused externally and according to the current rating
and 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), in case
multiple WC models run in parallel
2.3.5.1 Models for 380 / 400 / 480 V
No matter what particular version the device is, standard, WC or Slave, the rated AC supply voltage on the type label
is important. The models for 380 / 400 / 480 V use a regular three-phase supply with or without N. Specification:
Rated power Inputs on AC plug Supply type Configuration
30 kW L1, L2, L3, (N), PE Three-phase (3P)
Delta
The PE conductor is imperative and must always be wired!
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
Rated power ø I
max
ø I
max
ø I
max
ø
30 kW 10 mm²
56 A
10 mm²
56 A
10 mm²
56 A
10 mm²
The included connection plug can receive crimped cable ends of up to 16 mm². The longer the connection cable,
the higher the voltage 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.
Figure 11
- Example for an AC cable with 4 conductors (european color code, cable not included in delivery)