Model #MK777-405

Electrical frequency meter (NSN 6625-00-938-6501)

Description

3.125 inches maximum overall length, plastic material.

Circuit Current For Which Designed
Ac
Mounting Hole Diameter
0.156 inches
Overall Diameter
3.500 inches
Mounting Bolt Circle Diameter
3.160 inches
Furnished Items And Quantity
Nut 4; washer 4
Indicator Type
Vibrating reed
Installation Design
Panel
Register Quantity
1
Mounting Arrangement Style
Three hole/stud bolt circle
Dial Scale Marking Color
Black single indicator single range
Resonant Reed Quantity
9
Accuracy In Percent
-1.0/+1.0 at full scale single indicator single range
Meter Depth Behind Mounting Flange
2.125 inches
Meter Body Diameter Behind Mounting Flange
2.800 inches
Movement Type
Vibrating reed
Background Color
White single indicator single range
Power Source
External
Mounting Facility Type And Quantity
3 unthreaded hole
Measurement Range
+380.0/+420.0 hertz single indicator single range
Circuit Attachment Method And Quantity
2 screw and 2 solder lug and 2 threaded stud
Operating Voltage Rating In Volts
Between 95.0 ac and 135.0 ac
Special Markings
Frequency at top of meter face and cycles at bottom; lines at 380, 390, 400, 410 and 420 hz
Nuclear Hardness Critical Feature
Nonhardened
Style Designator
Round flush mtg
Supplementary Features
Power consumption 6.5 w max
Fsc Application Data
Test set, elect. Equip.
Description
Meter,electrical Frequency
Cage Code
0BZM1

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Updated: 11/26/2024