7 ELECTRICAL
REQUIREMENTS
7.1 X-Ray Generator
General Information
The dual generator contains two single generator high-power supplies, which remain in low power
consumption during standby
. During exposure, only one high power supply is active. The
maximum power consumption of a dual generator is the same as a single generator with the
advantage of a rapid and automatic tube switchover
.
Power consumption is high when ExacTrac kV imaging runs simultaneously with MV delivery.
Therefore, ensure the 2 systems are on separate circuit breakers.
HFe 601 Generator: Dual Configuration
Component Description
Maximum output rating
(for user)
65 kW
Input Voltage
The HFe generator without pre-transformer can be directly connected to:
•
400 V AC star (3 phases + neutral)
A TN star network provides all five required lines (L1, L2, L3, N, PE) that must be connected
(400 V phase to phase and 230 V neutral to phase). Minimal requirement: Star network (3
phases + neutral). PE has to be connected separately from the generator PE bar to a local
grounding point in this case.
Brainlab provides two pre-transformers if a TN network is present, but the voltage dif
fers
from 400 V:
• 208 V AC star TN
• 420 V/440 V/480 V AC star TN
Brainlab provides one pre-transformer for a special delta power network:
• 208 V AC delta (mainly for Japan)
You must specify the provided nominal voltage and grid type (star or delta).
If none of the provided pre-transformers is appropriate, you are responsible for providing the
star 400 V network.
Connection
5 lines, three phases, neutral (N), ground PE max. 35 mm
2
. Fine wire and cable end sleeves
recommended.
Mains fuses in building
installation
Mains supply: 400 V; 420 V/440 V/480 V; 208 V
Slow blow fuse (A): 50 A; 50 A; 100A
Frequency
50 Hz/60 Hz ± 1 Hz
Maximum line regulation + 5%, - 10% @ 400 V
Maximum allowable
mains resistance per
phase
0.2 Ω
ELECTRICAL REQUIREMENTS
Site Planning Manual Rev. 1.0 ExacTrac Ver. 6.x 73
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