ANALOGUE PANEL METER
ANALOGUE PANEL METER
Description
Specifications are in accordance with UL94V-0 (flame retardancy), DIN 43700 (dimensions), DIN 43802 and DIN 43701 (pointer and scale), VDE 410, IEC 51, UL 94 and EN 60051.
Symbols for marking instruments and accessories
Normal operating position of the panel meter is vertical. The position is marked on the scale and the meters are correspondingly calibrated.
Moving Coil Frequency Meters
Instruments for local indication are usually supplied as self-contained units in sizes 96mm. and 144mm. Each instrument incorporates a moving coil movement driven by an internally mounted static circuit. For remote indication moving coil instruments can be supplied to operate with transducers (0..1mA or 4..20mAdc)
Standard ranges : 44..55Hz., 45..65Hz., 55..65Hz., 47..53Hz., 57..63Hz., 44..56Hz., 54..66Hz.
Information required with order : Type reference and model. Details of required scale and any optional features of required electrical rating
Example : Pointer, NFQ96-90 Scale 45..55Hz. Rating 110V, 115V, ete.
Moving coil DC ammeters and DC voltmeters
Moving coil instruments are suitable for a wide range of DC application, particularly for remote indication when use with a suitable transducer (0..1mA or 4..20mADC). Scales are linear and can be drawn to suit customer specification together with any chosen title.
Information required with order : Type reference and model Details of required scale and any optional features. Details of required electrical rating or input transformer ratio Example : Moving coil, NDA96-24 Input 4..20mA, Scale 0..200A
Moving coil AC ammeters and AC voltmeters
Moving coil instruments are suitable for a wide range of AC Rectified instruments are available for AC applications and have a long burden. Scales are linear and can be drawn to suit customer specification together with any chosen title.
Information required with order : Type reference and model Details of required scale and any optional features. Details of required electrical rating or input transformer ratio
Example : Moving coil, NAA96-24 Input 4..20mA, Scale 0..200A
Power Factor Meters
A power factor indicator with quadrant and long scale is available in size 96mm. these instruments are designed for measuring power factor in three phase three wire network with balanced load or in single phase network.
The moving coil movement is driven by an internal transducer circuit. Scale are central at unity and are available up to ±180 electrical degrees. For remote indication, moving coil instruments can be supplied to operate with transducer (0..1mA or 4..20mAdc). All instruments are 96 x 96mm.
Information required with order : Type reference and model. Details of CT and VT transformer secondary inputs and frequency
Tap Position Meter
Position indicators can be used for many remote monitoring applications. For example, the position of transformer taps, mechanical values or sluice gates can be determined accurately.
Scale marking are kept to a minimum to present a clear pleasing appearance ensuring that the instruments can be read with ease from distance of several feet. An internally mounted static circuit ensure that normal supply variations do not affect the stated accuracy. For remote indication, these instruments can be supplied to operate with transducer (0..1mA or 4..20mA). Instruments are available in 96x96mm. and 144x144mm. cases.
Information required with order : Type reference and model. Details of required electrical rating and number of taps and resistance per tap scale required
Moving Coil Wattmeters and Varmeters
Instruments for local indication are usually supplied as self-contained units in sizes 96mm. and 144mm. Each instrument incorporates a moving coil movement driven by an internally mounted static circuit.
For remote indication moving coil instruments can be supplied to operate with transducers (0..1mA or 4..20mAdc)
Information required with order : Type reference and model Details of required scale and any optional features Details of CT and VT transformer input Example : 90° Wattmeter 3 phase 3 wire balanced load,
Model : NW96-90B3
Voltage : 11kV/110V, 50Hz.
Scale : 0..4MW
Moving Coil Wattmeters and Varmeters
Connection Diagram
Synchronizing system connection diagram
Overall connection diagram
