User Manual – Rev AJ
California Instruments
The input power cables and protective circuit breaker used must be large enough to handle the
input current and input voltage of the power source and must conform to local electrical codes.
C nsult a q
may be used per MX cabinet. Note that wires must be sized to accommodate the worst-case
maximum current that may occur under low line c
require different wire types and sizes. These ratings should also be used when selecting a
le
the voltage drop from the following formula:
2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP
Table 3-1: Suggested Input Wiring Sizes for each MX Cabinet *
o
ualified electrician prior to installation. Table 3-1 shows the size of the cables that
onditions. Local electrical codes may also
circuit breaker or equivalent disconnect device.
Cable ngths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate
Nominal Line
Voltage
Load Current
@ low line
Wire Gauge (US)
Circular Mils
(Kcmils)
Metric (mm2)
480 V
AWG
26.24
13.3
400 V
AWG
41.74
21.1
230 V
AWG
66.36
33.6
208 V
AWG
83.69
42.4
* Using high temperature rated wire. Always consult the National Electrical Code and/or local code
regulations for proper rating and size of wire cabling prior to installation.
CAUTION: Capacitors in the power source may hold a hazardous electrical charge
even if the power source has been disconnected from the mains supply. Allow
capacitors to discharge to a safe voltage before touching exposed pins of mains
supply connectors.
Power modules need at least 15 Minutes to discharge to safe levels before they can
be removed.
3.5 AC On/Off Circuit Breaker on MX Series front panel.
It is important to understand the purpose and operation of the On/Off circuit breaker of the MX
Series located on the lower left side of the front panel. This is a 2A rated breaker that is used to
engage and protect the LV Power supply of the MX chassis only. The LV Power supply
provides DC bias power to the entire MX system. The AC input power is routed through a set of
three AC line fuses (F1, F2 and F3) located in the lower left bottom corner of the MX. (See
Figure 3-2 for fuse locations). These fuses protect the three MX amplifiers and the AC input
transformer from excessive input currents. The AC input power is connected to the input
transformer through a large three-pole contactor. Removing AC power to the LV Power Supply
by opening the front panel circuit breaker (moving the lever to the down (OFF) position) will
cause this contactor to loose its coil voltage and will result in it opening and disconnecting the
input transformer and amplifier from AC mains input.
Note: If any MX system failure has occurred on any part of the MX system, AC input
power must be removed immediately and
inspected by a qualifier service technician.
Always turn off the On/Off Circuit breaker before re-applying AC input power.
not restored until the system has been
40 MX
Series
Содержание MX30-1
Страница 4: ...User Manual Rev AJ California Instruments 4 MX Series ...
Страница 33: ...User Manual Rev AJ California Instruments MX Series 33 ilter option schematic Figure 2 12 MX output f ...
Страница 34: ...User Manual Rev AJ California Instruments Figure 2 13 MX45 Output Noise 10 KHz 1 MHz 34 MX Series ...
Страница 50: ...User Manual Rev AJ California Instruments Figure 3 11 MX135 or MX135 MB Output Wiring Rear view 50 MX Series ...
Страница 147: ...User Manual Rev AJ California Instruments Output Status Available on top assembly 7003 427 only MX Series 147 ...
Страница 148: ...User Manual Rev AJ 148 California Instruments MX Series Figure 5 2 MX Series Detailed Block Diagram ...
Страница 149: ...User Manual Rev AJ MX Series California Instruments 149 Figure 5 3 Power Module Detailed Block Diagram ...
Страница 195: ...User Manual Rev AJ California Instruments Figure 9 4 Voltage Modulation MX Series 195 ...