Overview
The fourth generation of our very popular MT‑1/NT introduced more than 10 years ago!
Probewell now offers the most advanced portable single-phase watthour meter tester, the MT‑1/NT4. Using the technology developed for our 3‑phase tester, the weight of the MT‑1/NT4 is only 5.3 lbs, making it the smallest portable watthour single-phase meter tester available today!
All common residential watthour meters can be accurately tested on site by meter shop employees. Customer complaints and periodic sampling can be done within a few minutes! The MT‑1/NT4 is also very popular with Customer Service people. They can check the meter in one single visit and in front of the customer. Customer satisfaction is instantaneous.
The MT‑1/NT4 can test all common residential watthour meter forms 1S, 2S, 3S, 4S and 12S. The three loads HL, PF and LL are set automatically according to the TA of the meter being tested. Any non standard current can be also programmed by the user for special needs. With the commercial 12S meter, the MT‑1/NT4 can test two phases simultaneously or separately. The meter under test is entirely controlled by the test socket. No setup wiring is needed.
The MT-1/NT4 has also reverse power flow testing capability for solid-state meters.
Features
Built-in Two 50A Current Synthesizers
- Simulates resistive and inductive loads.
- Supplies any precise and regulated test currents up to 50A.
Built-in Watthour Standard
- True watthour standard.
- Accuracy is not affected within the specified temperature operating range.
- Comes with a complete calibration report certifying measurement accuracy over its entire 36-point operating range using a primary standard traceable to NIST.
Easy to Use
- Handheld remote control similar to the MT‑1/NT's with its intuitive menus.
- Two twist and lock removable tabs can be placed without tools at 3, 6 or 9 o'clock.
- Deadfront design for safer operation.
Specifications
| Compatible Meters | |
|---|---|
| Form | 1S, 2S, 3S, 4S & 12S |
| Class | 10, 20, 100, 200 & 320 |
| Test Socket | |
| Input Voltage | 100 - 600VAC |
| Line Frequency | 58 - 62Hz |
| Power Consumption | 75VA (maximum) |
| Circuit Breakers | 2 x 1A (press to reset mechanism) |
| Current Synthesizers | |
| Adjustable Current | 0.25 to 50A |
| Power Factor | Unity and 0.5 Lag |
| Watthour Standard | |
| Typical Accuracy | ±0.02% |
| Guaranteed Accuracy | ±0.05% |
| Temperature | |
| Operation | -4° to 140°F (-20° to 60°C) |
| Storage | -4° to 140°F (-20° to 60°C) |
| Physical Dimensions (HxLxD) | |
| Test Socket (Diam. x D) | 6.9" x 7.7" |
| Remote Control | 8.3" x 3.9" x 1" |
| Carrying Bag | 11" x 11" x 8" |
| Weight | |
| Test Socket | 5.3 lbs |
| Remote Control | 0.6 lb |
| Overall with Carrying Bag | 8.0 lbs |
| Optional Test Accessories | |
| Metercam Disk Sensor | CAM-2 (PW-8991) |
| Optical Pickup | PUL-3 (PW-9073) |
| Focus Adapter | FOCUS (PW-8051) |
| Magnetic Adapter | MAG (PW-0747) |
| Data Logging Software | LOG (PW-9011) |
| Accuracy Testing Kit | ATK-4 |
| Latch (for ring-type base) | LAT |
| Warranty | |
| Parts and Labor | 1-year limited |
Presentation
