MT-1/NT9 | Three-Phase Wh Meter Tester
High-Accuracy Portable Field Meter Tester
Perform an accurate meter test in just a few minutes!
Probewell’s MT-1/NT9 has a built-in 3-phase phantom load made of synthesized 50 A current sources and a 3-phase electronic standard with an accuracy of ±0.02% typical, ±0.05% guaranteed.
Net metering-enabled
The MT-1/NT9 is a bidirectional meter tester and can perform reverse power flow testing in solid-state meters devices meaning that it can perform net metering tests on the installation.
SKU: NT9
Small but mighty
Weight: 6.4 lb. | Size: 6.9″ X 7.7″
MT-1/NT9 | Description
Probewell’s MT-1/NT9 is among the most advanced portable three-phase watthour meter tester
The MT-1/NT9 test socket adapter weighs only 6.4 lb, an ideal tool for testing in the field and in the meter shop. Within a few minutes, a residential, commercial or industrial electricity meter can be accurately tested on site by meter shop technicians. The MT-1/NT9 can be set to test all 3 phases simultaneously in one step (Mode Preset-quick) or set to do a full test consisting of the 3 phases simultaneously followed by each element separately (Mode Preset-full).
Furthermore the MT-1/NT9 is a portable three-phase meter tester that tests self-contained and CT rated meters forms, such as 1S, 2S, 3S, 4S, 6S, 8S, 9S, 12S, 14S, 15S and 16S.
Compatible Forms Supported by the MT-1/NT9 meter tester
|
Meter Form |
1S |
2S |
3S |
4S |
5S |
6S |
8S |
9S |
12S |
14S |
15S |
16S |
Aclara® Fitzall ™ |
||
|
35S |
36S |
25S |
|||||||||||||
|
45S |
46S |
||||||||||||||
|
Meter Tester |
 |
Self-Contained |
CT-Rated |
Self-Contained |
CT-Rated |
Self-Contained |
|||||||||
|
|
a |
a |
a |
a |
|
a |
a |
a |
a |
a |
a |
a |
a |
a |
|
Three-Phase Wh Meter Tester
High-accuracy Portable
Field Meter Tester
Small but mighty
Weight: 6.4 lb. | Size: 6.9″ X 7.7″
Perform an accurate meter test in just a few minutes!
Probewell’s MT-1/NT9 has a built-in 3-phase phantom load made of synthesized 50A current sources and a 3-phase electronic standard with an accuracy of ±0.02% typical, ±0.05% guaranteed.
Net metering-enabled
The MT-1/NT9 is a bidirectional meter tester and can perform reverse power flow testing in solid-state meters devices meaning that it can perform net metering tests on the installation.
SKU: NT9
MT-1/NT9 | Description
Probewell’s MT-1/NT9 is among the most advanced portable three-phase watthour meter tester
The MT-1/NT9 test socket adapter weighs only 6.4 lb, an ideal tool for testing in the field and in the meter shop. Within a few minutes, a residential, commercial or industrial electricity meter can be accurately tested on site by meter shop technicians. The MT-1/NT9 can be set to test all 3 phases simultaneously in one step (Mode Preset-quick) or set to do a full test consisting of the 3 phases simultaneously followed by each element separately (Mode Preset-full).
Furthermore the MT-1/NT9 is a portable three-phase meter tester that tests self-contained and CT rated meters forms, such as 1S, 2S, 3S, 4S, 6S, 8S, 9S, 12S, 14S, 15S and 16S.
Compatible Forms Supported by the MT-1/NT9 meter tester
MT-1/NT9 | Technical Specifications
| COMPATIBLE METERS | |
| Single-Phase | 1S, 2S, 3S*, 4S, 12S(N) and 25S |
| Three-Phase | 6S, 8S, 9S, 12S, 14S, 15S, 16S, 36S, 46S, 96S and Fitzall™ (5S, 35S and 45S) |
| 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 |
| Phase Angle (Wh) | Unity and 60° Lag |
| Phase Angle (VARh) | 90° and 30° Lag |
| INTERNAL 3-PHASE WATTHOUR STANDARD | |
| Typical Accuracy | ±0.02% |
| Guaranteed Accuracy | ±0.05% |
| ENVIRONMENT | |
| Operation Temperature | -4° to 140°F (-20° to 60°C) |
| Storage Temperature | -4° to 140°F (-20° to 60°C) |
| Humidity | 5% to 95% (non condensing) |
| PHYSICAL DIMENSIONS | |
| Test Socket (Diam. x L) | 6.9” x 7.7” |
| WEIGHT | |
| Test Socket | 6.4 lb |
| WARRANTY | |
| Parts and Labor | 2-years limited*** |
| ADVANCED FEATURES | |
| Wh/VARh | |
| Reverse Flow Test for bidirectional meters | |
| Line Monitor | |
| KW Demand Test | |
| Creep Test | |
| INCLUDED | |
| Carrying bag | Update cable |
| User’s manual | WTDataOne Software |
| Quick Start Guide | 2 Removable Twist Tabs |
| Calibration report | |
*An adapter is required to verify 3S Sensus Meter.
**An adapter may be required depending on the meter installation.
***Only applicable to units shipped to Canada or USA. 1-year warranty for other countries.
Support
Support
Frequently Asked Question
1. What is a three-phase meter tester used for?
A three-phase meter tester like the MT-1/NT9 verifies the accuracy and performance of commercial and industrial meters using a built-in 3-phase phantom load.
2. Can portable testers perform net metering tests?
Yes. The MT-1/NT9 performs reverse power flow for net metering verification. It simulates both import and export energy, ensuring solid-state meters record bidirectional power correctly.
3. How does a meter tester generate calibration reports?
The MT-1/NT9 comes with a NIST-traceable calibration report at the time of purchase. It covers Wh and VARh accuracy across its operating range, ensuring compliance and reliability.
