Trumpf TruBend 2000 Series, Руководство оператора

Страница: 40 / 74

TruBend 2100
Fuse protection 3 x 50 A
Maximum interruption time 10 ms/10 s
Connected loads Tab. 2-8
The use of slow-blow fuses is preferred. If these fuses are also
used for branch circuits, an ETI type fuse must be used to pro-
tect the machine from current peaks when switching the
machine on.
The SCCR value is 35 kA.
Connecting cables
NEC
Electrical line ■ Copper line, four-core (L1, L2, L3, PE).
■ THHN copper or equivalent is recommended (2000 V test voltage) designed
for a maximum temperature of +90° C (+194° F).
■
No aluminum lines may be used for the machine connection.
Conductor cross-section ■ The conductor cross-section must meet NEC 670-4 (a). The conductor cross-
section must be designed for at least 125 % of the nominal current. The
nominal current is specified on the nameplate.
■ To ensure voltage stability and rating, the line dimension should be larger
than specified in the NEC table 310-16.
■ Max. AWG 2
Requirements for the connecting cable Tab. 2-9
3.2 Power supply
Uninterruptible Power Supply (UPS)
The following applies in the event that it is necessary to connect
the system to an uninterruptible power supply (UPS):
■ When working out the dimensions of the UPS, the short-cir-
cuit and overload responses of the UPS system are to be
taken into account alongside the continuous power and the
electrical connected loads.
■ As a rule: overload capacity of the UPS ≥200 % for 0.5 s.
Note
The dimensioning of the uninterruptible power supply must be
established without fail by the manufacturer of the UPS plant!
2 ‐ 12
Electrics - Version 1 B1161en
NEC conditions for fuses
SCCR value