126 Options List
C.9 Option 10: Inlet Power Supply Description
C.9.1 110 to 350 Vdc, 85 to 250 Vac, 47 to 440 Hz Terminal Power Strip, SWC
Option 10 replaces the standard IEC-320 power input module with a three-position, screw-type
terminal block, including Surge Withstand Capability (SWC). This feature is intended for use
in installations where it is necessary or desirable to have the instrument power hard-wired. See
Figure 3.3.
Figure C.9: Option 10 Power Supply Inlet
Connector
C.9.2 Specifications
Input Power:
AC Voltage Range: 85 to 250 Vac.
Frequency Range: 47 to 440 Hz.
DC Voltage Range: 110 to 350 Vdc.
Input Power: < 20 Watts
Terminal Block:
Terminal Assignment:* Ground, (−), (+), left to right, viewed from rear.
Block Size: 15 mm W x 18 mm H x 30 mm D. (5/8” x 0.75” x 1 3/16”).
Approvals: U. L. recognized; C.S.A. approved.
*For AC operation, input line may be connected between (+) and (−), without
regard to polarity; however proper grounding should always be employed.
Fuse:
Type: Bussman GDC-1A.
Current Rating: 1 Ampere, fast-acting.
Voltage Rating: 250 Volts.
Size: 5 mm x 20 mm.
Surge Withstand Protection (SWC)
Provides input Surge Withstand Capability (SWC) in compliance with both ANSI C37.90 and IEC
801-4.
Connections
All input power line connections to the rear-panel terminal strip should be made using appropriate
power cables which have the insulation removed about 1/4” from the end or as required for tinning.
If a DC source is used, connect the positive lead to the positive (+) terminal, connect the negative
lead to the negative (−) terminal and a safety ground lead to the “G” terminal when viewing the
instrument from the rear (see Figure 3.3).
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