AC Switchboard Meters – Iron Vane & Rectifier types
Wattmeters
Temperature Indicators
Frequency Meters
Expanded Scale Voltmeters
Wattmeters
Temperature Indicators
Frequency Meters
Expanded Scale Voltmeters
Volt Meters
| SPECIFICATIONS: | |
|---|---|
| Initial Accuracy (at 45°C and 400 Hz): | 0.10% Center half of scale / 0.20% Other scale points |
| Dielectric Stress: | 1500 Volts RMS |
| Insulation Resistance: | 20 Megohms, minimum |
| Burden: | 10 volt-amperes max. |
| Storage Temperature: | -65°C to +100° |
| Operating Temperature: | 0° to +65°C |
| Weight, 3½” Panel: | Approx. weight 2.25 pounds |
| Weight, 4½” Swbd: | Approx. weight 5.25 pounds |
| Over voltage: | 135° of rated voltage for 15 minutes |
| Scale Details: | 250 degrees scale arc with black markings on white background |
| Scale Range (Volts / RMS) | Model Number* | (Military Designation) | Resolution |
|---|---|---|---|
| 3½” Panel | 4½” Switchboard | ||
| 110-120 | 3432-020 (MR39W115AFH) | 4931-009 (MR49W115AFH) | 0.1 |
| 115-125 | 3432-021 (MR39N120AFH) | 4931-010 (MR49W120AFH) | 0.1 |
| 198-218 | 3432-022 (MR39W208AFH) | 4931-011 (MR49W208AFH) | 0.2 |
| 210-230 | 3432-023 (MR39W220AFH) | 4931-012 (MR49W220AFH) | 0.2 |
| 420-460 | 3432-024 (MR39W440AFH) | 4931-013 (MR49W440AFH) | 0.5 |
| 430-470 | 3432-025 (MR39W450AFH) | 4931-014(MR49W450AFH) | 0.5 |
| Applicable Specifications | |
|---|---|
| Meter Movement: | MIL-V-23151, MIL-PRF-10304F, MIL-DTL-16034B |
| Vibration: | MIL-STD-167 |
| Shock: | MIL-S-901 |
| Frequency: | 400Hz |