Power Disconnect; Protection Devices - Baldor BPS 2000 Series Installation & Operating Manual

Power Disconnect

Protection Devices

Maximum Maximum
Catalog Number
Continuous
BPS2060
BPS2100
BPS3030
BPS3050
Note: All wire sizes are based on 75°C copper wire, 3% line impedance. Higher temperature smaller gauge wire may
be used per NEC and local codes. Recommended fuses/breakers are based on 25°C ambient, maximum
continuous output current and no harmonic current.
2-4 Installation
A power disconnect should be installed between the input power service and the BPS for
a fail safe method to disconnect power. The BPS will remain in a powered-up condition
until all input power is removed from the BPS and the internal bus voltage is depleted.
The AC input power lines must have suitable protection devices installed. Input and
output wire size is based on the use of copper conductor wire rated at 75 °C. Use the
recommended circuit breaker or fuse types as follows:
Circuit Breaker:
Fast Action Fuses: Buss KTN on 230 VAC or
Time Delay Fuses: Buss FRN on 230 VAC or
Table 2-2 describes the wire size to be used for power connections and the ratings of the
protection devices.
Recommended fuse sizes are based on the following:
115% of maximum continuous current for time delay fuses.
150% of maximum continuous current for fast or very fast acting fuses.
Table 2-2 Wire Size and Protection Devices
L1, L2, L3 Incoming Power
Input Input
Breaker
Fast
Amps
Acting
60A 90A 90A
100A 150A 150A
30A 50A 50A
50A 70A 80A
1 phase, thermal magnetic.
Equal to GE type THQ or TEB for115 or 230 VAC
3 phase, thermal magnetic.
Equal to GE type THQ or TEB for 230 VAC or
GE type TED for 460 VAC.
Buss KTS on 460 VAC, Buss FRS or equivalent.
Buss FRS on 460 VAC or equivalent.
Input Fuse Wire Gauge
Time
AWG
Delay
70A 6
115A 3
40A 8
60A 6
X3 Logic Power
Wire Gauge
Input
Fuse
2
mm AWG
13.3 Internal 16
26.7 Internal 16
8.37 Internal 16
13.3 Internal 16
2
mm
1.0
1.0
1.0
1.0
MN1221