The moving coil, rectifier meters, DG 48/72/96/144 are housed in molded polycarbonate cases and are suitable for the measurement of AC currents and voltages. Moving coil rectifier instruments measure average values and are calibrated to indicate RMS values, assuming a sinusoidal waveform for frequencies from 40 to 10000 Hz (AC current for frequency range of 40 to 1000 Hz and AC voltage for frequency range of 40 to 1000 Hz. These instruments offer several advantages in switchboards and generating set panels. A number of meters can be mounted in a panel cut-out (mosaic mounting). Front glass, bezel & dial can easily be replaced
| Features | • Less VA burden |
|---|---|
| Movement | Moving coil movement has pivots of very high hardness. Movement is suspended between spring-loaded sapphire jewels. Movement is properly shielded and critically damped by eddy currents induced in coil former. |
| Case Options | • Antiglare glass front fascia |
| Dial Options | • Blank dial with initial and end values marked |
Mechanical
| Case Details | Molded square suitable for mounting in control switchgear panels and machinery consoles. |
| Case Material | Polycarbonate, flame retardant, and drip-proof per UL 94-V-0 |
| Front Fascia | Glass |
| Color of Bezel | Black |
| Position of Use | Vertical |
| Panel Fixing | Mounting clamps |
| Mounting | Stackable in a single cutout |
| Panel Thickness | ≤1.5mm |
| Terminals | Voltmeters & Ammeters <6A: Hexagon studs, M4 screws and wire clamps, E3 (DIN 46282). Ammeters ≥6A: Threaded stud- M6 with nuts. |
Electrical
| Measured Quantity | AC voltage or current |
| Overload Capacity | Acc to IS: 1248/IEC 51 |
| Continuously | 1.2 times rated voltage/current |
| Short Duration | 2 times rated voltage, 5 seconds maximum 10 times rated voltage, 5 seconds maximum |
| Enclosure Code (IEC 529) | IP 52 - case cover IP00 - terminals without back cover IP20 - terminals with back cover |
| Insulation Class | Group A according to VDE 0110 |
| Rated Insulation Voltage | DG48: 660V DG72 & DS96: 1000V |
| Proof Voltage | DG48: 2kV DG72 & DG96: 3kV |
| Insulation Resistance | <50MΩ at 500 Vdc |
Scale & Pointer
| Model | DG48 | DG72 | DG96 | DG144 |
| Scale Length | 41mm | 61mm | 97mm | 146mm |
| Scale Characteristics | Linear* | |||
| Scale Division | Coarse - Fine | |||
| Scale Interchangeability | Interchangeable* | |||
| Pointer | Knife edge | |||
| Pointer Deflection | 0-90° | |||
Environmenal
| Climatic Suitability | Climate category II as per IS:1248, IEC 60051 Climatic class III according to VDE/VDI 3540 |
| Operating Temperature | -10° to +55°C |
| Storage Temperature | -25° to +65°C |
| Relative Humidity | ≥75% annual average, non-condensing |
| Shock Resistance | 15gn for pulse duration 11ms |
| Vibration Resistance | 10-55-10 Hz for amplification 0.15mm (1.5g at 50Hz) |
| IS 2419 DIN IEC 61554 | Nominal case and cutout dimensions for indicating electrical instruments |
| IS 1248 | Scale and pointer for electrical measuring instruments |
| IS 1248 | Connections and terminal markings for panel meters |
| DIN 46200 DIN 46282 | Terminal bolts/leads |
| VDE 0110 VDE 0410 IEC 529 IEC 1010 | Safety requirements and protective measures for electrical indicating instruments and their accessories. |
| IS 1248 IEC 51/DIN EN 60051 DIN 43701 | Performance specifications for direct acting indicating analog electrical measuring instruments and their accessories. |
| IS 1248 IS 9000 VDE/VDI 3540 | Environmental condition |
| DIN 43718 | Front frames for indicating measuring instruments principle dimensions |
| UL 94-V-0 | UL combustibility class |
| DIN 43701 | Technical conditions of delivery for electrical instruments |
| IS 1248/IEC 51 IS 9000 VDE 0411 IEC 1010 | Mechanical strength (free-fall test, vibration test) |
| Datasheet |
