LEYBOLD SCROLLVAC plus - Electrical Supply Connection

the 3-phase pump system must be installed with motor thermal overload
protection. Failur
e to install the 3-phase pump system without the specied
motor thermal overload protection could result in permanent damage to the
pump if subjected to sustained overload or fault conditions, e.g. a block
exhaust.
Furthermore, the pump housing surface temperature could reach levels
greater than 105 °C without this protection.
Table 6 Fuses and circuit breakers
Input supply
Rated system input cur‐
rent
Recommended external
fuse rating
Recommended fuse
type
200 V, 50 Hz 2.4 A rms 2.5 A, 250 V a.c
RK1 and RK5
200-230 V, 60 Hz 2.4 A rms 2.5 A, 250 V a.c
380-415 V, 50 Hz 1.5 A rms 1.6 A, 600 V a.c
RK1, RK5 and J
460 V, 60 Hz 1.5 A rms 1.6 A, 600 V a.c
Table 7 Recommended motor thermal overload protection
Parameter 3-phase SCROLLVAC 15, 18, 7 and 10 plus
Supply voltage and frequency
200 V,
50 Hz
200 - 230 V,
60 Hz
380 ‑ 415 V,
50 Hz
460 V,
60 Hz
Maximum COP current (A rms) 1.85 1.75 1.45 1.30
Maximum Atmospheric current (Arms) 2.15 2.75 1.55 1.50
Motor thermal overload setting (Arms) 2.40 1.50
Recommended motor thermal overload
device
ABB: T16 - 3.1 ABB: T16 - 1.7
Trip class 10
6.7.1Electrical supply connection
CAUTION: PUMP DAMAGE
The 3-phase pump system is delivered congured for high voltage use. High
voltage is dened as: 380 ‑ 415 V/50 Hz and 460 V/60 Hz. Make sure that the
pump is correctly congured for the electrical supply voltage and frequency. If not,
the embedded 3-phase motor within the pump can be damaged.
The 3-phase pump system is not designed to be powered directly from a variable
speed drive (VSD) using inverter technology. The direct use of inverter technology
will lead to increased heating within the pump system, resulting in long term
damage to the pump.
3-phase power must be connected to the 3-phase pump system. The
overall 3-phase cable must include 3 live wires and a protective earth (PE)
ground wire.
In addition to the primary 3-phase power supply connection to the pump,
the pump must also be earthed via the secondary earth connection on the
front of the pump housing using a M5x10 screw with a shake proof washer,
refer to
 for more details.
The specication of this secondary earth wire must also meet the above
mentioned requirements.
300668736_002_C7 - © Leybold 31
Installation