Description
RISHABH PL96 AC Ground Fault Meter
The RISHABH PL96 AC Ground Fault Meter is an analogue panel-mounted indicating instrument designed for ground-fault monitoring circuits used in SCR feeder panels. It features a dial calibrated from 0 to 100% and operates from a 0 to 1mA DC measuring signal supplied by the associated ground-fault detection circuit.
Although the instrument indicates the condition of an AC ground-fault monitoring system, its meter movement receives a low-level DC input signal. The upstream sensing, rectifier or ground-fault PCB converts the monitored electrical condition into a proportional DC current that can be displayed by the analogue meter.
0-100% Ground-Fault Indication Scale
The meter face is marked from 0 to 100%, allowing operators and maintenance personnel to observe the relative level of the ground-fault signal. A reading near the lower end of the scale normally represents a lower signal from the connected monitoring circuit, while an increasing indication represents a higher input signal.
The percentage scale should be interpreted according to the original SCR feeder panel documentation and the calibration of the associated ground-fault PCB. The meter alone does not establish the alarm or trip threshold. Those functions are normally determined by the connected protection, monitoring or control circuit.
0-1mA DC Measuring Input
The RISHABH PL96 AC Ground Fault Meter is specified for a basic movement of 0 to 1mA DC. At zero input current, the pointer indicates the lower end of the scale. At the full-scale input of 1mA DC, the pointer should indicate 100%, subject to the calibration and operating condition of the complete circuit.
The 0-1mA DC input must not be confused with the actual AC fault current present in the electrical system. It is a low-level measurement signal generated by the feeder panel’s ground-fault detection equipment. Direct connection to a high-current or high-voltage circuit may damage the meter and create a serious safety risk.
PL96 Analogue Panel Meter Construction
The PL96 designation identifies a square analogue panel meter with nominal front dimensions of 96 × 96 mm. The RISHABH PL series uses a moving-coil measuring mechanism suitable for DC current and voltage indication. The movement provides a linear scale and wide pointer deflection, supporting clear observation of gradual changes in the input signal.
The panel meter is designed for installation in industrial control panels, switchgear assemblies and machinery consoles. Its square front profile makes it suitable for integration with other 96 × 96 mm instruments commonly installed in feeder panels and electrical control cabinets.
Class 1 Accuracy Specification
This particular RISHABH PL96 AC Ground Fault Meter is specified as Class 1 according to the provided equipment information. The accuracy class should be confirmed from the original meter dial, nameplate, purchase specification or feeder panel documentation before ordering a replacement.
Current standard documentation for the general RISHABH PL series may show a different standard accuracy class. A ground-fault meter with a customized percentage dial, special calibration or application-specific movement may therefore differ from a standard catalogue PL96 meter.
Application in SCR Feeder Panels
The meter is intended for installation in an SCR feeder panel as part of the electrical ground-fault indication system. SCR panels contain power-control and monitoring components that require continuous observation to support safe and reliable equipment operation.
The RISHABH PL96 AC Ground Fault Meter provides a direct visual indication that can help operators identify changes in the ground-fault monitoring signal. It may work together with a ground-fault PCB, sensing transformer, rectifier circuit, protection relay or other panel components, depending on the original system design.
Replacement and Compatibility Checks
Before selecting this meter as a replacement, the electrical and mechanical characteristics must be compared with the existing unit. The 0-1mA DC basic movement, 0-100% dial calibration, accuracy class, pointer direction, zero position and terminal polarity should all be verified.
The front dimensions, panel cutout, mounting depth, terminal positions and connection arrangement should also be checked. Two PL96 meters may have the same case size but different internal movements, dial markings or calibration values.
Special attention should be given to terminal polarity because a moving-coil DC meter is polarity sensitive. Reversed polarity may cause the pointer to move in the wrong direction or press against the mechanical stop. Installation should therefore follow the original wiring diagram and terminal markings.
Key Product Specifications
- Brand: RISHABH
- Series: PL96
- Product type: AC ground fault indicating meter
- Meter technology: Analogue moving-coil panel meter
- Display scale: 0-100%
- Basic movement input: 0-1mA DC
- Specified accuracy: Class 1
- Nominal front size: 96 × 96 mm
- Application: Ground-fault indication
- Panel application: Feeder panel
- System type: SCR
Ordering Information
When requesting a quotation for the RISHABH PL96 AC Ground Fault Meter, provide a clear photograph of the complete dial, rear terminals and product label. The required quantity, panel reference, cutout dimensions and terminal configuration should also be supplied when available.
The replacement instrument must be evaluated against the original 0-100% scale, 0-1mA DC movement and specified accuracy requirement. Final compatibility is subject to confirmation using the existing meter, panel drawings and electrical connection details.
Oil Well Direct supplies industrial electrical, instrumentation and SCR panel components for maintenance, repair and replacement requirements. Product availability and final technical compliance must be confirmed before order placement.
Official RISHABH datasheet for PL series 240-degree moving-coil analogue panel meters, including PL96 construction, dimensions, measuring ranges, installation details and standard technical specifications.
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