The Platinum Series of high quality Switchboard Instruments complies with the American ANSI-C39.1 accuracy class 1 specification. Available in the 4 1/2"case size, their rugged design characteristics meet the needs of the most demanding environment applications. Engineering know-how, based on time-proven designs and worldwide use, is built into every switchboard instrument. With Byram, you always get products with proven reliability and accuracy. Models are customizable to meet customers various requirements.
In accordance with ANSI C39.1Accuracy:±1.0% of full scale basic accuracy class.
Specific accuracies:Expanded Scale Voltmeter - 0.3% of mid-scale. Power Factor Meter meter - ±1% of fiducial value from 40-120% of rated current. Synchroscope Meter, Meter, - ±1% of scale length. Frequency Meters - ± .15Hz @45-55Hz and 55-65Hz, ±0.08Hz 58-62Hz, ±1.3Hz @350-450Hz.
Position of use:Vertical (scale)
Full scale deflection angle:250°, except Synchroscope Meter, Meter, is 360°
Full scale length:MCS Analog - 6.9 inches.
Scale plate:MCS Analog platform type 2 piece scale with graduations on the outer scale; numerals and legends on the inner scale.
Case:All MCS Analog switchboard instruments have drawn steel case with matt black powder coating.
Cover:Front cover has bezel & window made by one piece of flame retardant Polycarbonate molding with black matte finished bezel area.
Mounting studs: 1/4" x 28 thread.
Terminal studs:10-32 thread.
Operating temperature range:0 to 40°C (32 to 104°F).
Storage temperature range:-10 to 50°C (14 to 122°F).
Extreme temperature range:-20°C to 65°C (-4 to 149°F).
Dielectric level:2300VAC for 1 minute between the electrical circuit and mounting studs.
Overload rating:AC & DC Ammeters – 1.2 x continuous, 10 x for 0.5 seconds, repeated 10 times with 1 minute interval. Ac & DC Voltmeters and Frequency Meters – 1.2 x continuous