The moving coil panel meters DS 48/72/96/144 are housed in cases made of molded polycarbonate and are suitable for the measurement of DC current and voltages. 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). The front glass, bezel, and dial can all easily be replaced.
| Features | • Linear Scale |
|---|---|
| Movement | Moving coil movement has pivots of very high hardness. Movement is suspended between two 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 |
| Other Options | • Center zero or off-set zero position |
Mechanical
| Case Details | Molded square suitable for mounting in control switchgear panels and machinery consoles. |
|---|---|
| Case material | Polycarbonate, flame retardant, and drop 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 | ≤25mm |
| Terminals | Voltmeters & Ammeters <5A: Hexagon studs - M4, screws and wire clamps, E3. Ammeters >5A: Threaded stud- M6 with nuts. Ammeters >60A: Threaded studs - M8 with nuts. |
Electrical
| Measured Quantity | DC voltage or current |
|---|---|
| Overload Capacity | Acc to IS: 1248/IEC 51 |
| Continuously | 1.2 times rated voltage/current |
| SHORT DURATION | |
| Voltmeters | 2 times for 0.5 seconds: 9 overloads 2 times for 5 seconds: 1 overloads |
| Ammeters: DS 48, 72, 96 | 10 times for 0.5 seconds: 9 overloads 10 times for 5 seconds: 1 overloads |
| 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 | DS48: 660V DS72 & DS96: 1KV |
| Proof Voltage | DS48: 2KV DS72 & DS96: 3KV |
| Installation Category | DS48: 300V CAT III (IEC 1010) DS72 & DS96: 600V CAT III (IEC 1010) |
| Insulation Resistance | <50MΩ at 500 Vdc |
| BURDEN | |
| ±10%, Connection to Shunt | Power Consumption: 6mA Lead Resistance: 0.06W |
| ±10%, 1A - 60A | Voltage drop: 60mVm |
| ±5%, ≥1V | 1000W/V |
Scale & Pointer
| Model | DS96 | DS48 | DS72 | DS144 |
|---|---|---|---|---|
| Scale Length | 41mm | 63mm | 97mm | 146mm |
| Scale Characteristics | Linear | |||
| Scale Division | Coarse - Fine | |||
| Scale Interchangability | Interchangeable | |||
| Pointer | Knife edge | |||
| Pointer Deflection | 0-90° | |||
Environmenal
| Climatic Suitability | Climate category II as per IS:1248 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) |
| Pollution Degree | 2 |
| IS 2419 DIN IEC 61554 | Nominal case and cutout dimensions for indicating electrical instruments |
|---|---|
| IS 1248 DIN 43802 | Scale and pointer for electrical measuring instruments |
| IS 1248 DIN 43807 | Connections and terminal markings for panel meters |
| DIN 46200 DIN 46282 | Terminal bolts/leads |
| DIN 46282 | Clamp straps for connections |
| IS 9249 DIN 40050 VDE 0110 VDE 0410 IEC 529 IEC 1010 | Safety requirements and protective measures for electrical measuring 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 IS 9000 VDE 0411 IEC 61010 | Mechanical strength (free fall test, vibration test) |
European Compliances
| 2004/108/EC | EMC directive |
|---|---|
| 2006/95/EC | Low voltage directive |
| Amendment 93/68/EEC | For CE marking |
| Datasheet |
