 |
 |
 |
|
 |
| meter & sensors | enclosure | EM1251 installed in 10-circuit switch | meter specs | typical wiring |
| Click thumbnail images above to enlarge | ||||
Page last updated Oct 20, 2021 @ 10:03pm
METERPNL1
|
|
|
|
|
| meter & sensors | enclosure | EM1251 installed in 10-circuit switch | meter specs | typical wiring |
| Click thumbnail images above to enlarge | ||||
THIS PRODUCT HAS BEEN DISCONTINUED
SELECT ONE OF OUR OTHER METERS AT THIS LINK
Meter Panel
Electronic Bar Graph Meters
(2)Voltage & (2)Wattage
Don't operate your backup or alternative power electrical system blind! Install and connect this high-tech microprocessor controlled meter to easily monitor your electrical loading at a glance.
NEMA 1 enclosure is 8" x 8" x 4" deep, made of #16 gauge steel and comes with 1/2", 3/4" and 1" knockouts. Hinged front cover is supplied ready for cutting rectangular hole to mount meter. Enclosure is UL Listed and CSA certified. For maximum meter life we do not recommend direct mounting of enclosure on engine driven generators due to vibration. Mount separately on an indoor wall.
Two voltmeter indicators and two wattmeter indicators provide simultaneous display of parameters for both hot legs of a 120/240VAC system. Meter is rectangular, 5% accuracy and fits into rectangular hole in cover and is held in place with an included metal spring clip. Barrier type terminal block included for easier wiring. You must cut hole for meter and mount and wire components. Depending on the type of wire, you must supply properly sized cord grips or strain relief connectors.
Operation
Voltages from the generator, voltages from the generator current sensors, and a voltage from the utility mains are applied to the appropriate inputs to the meter. The meter acquires these signals, performs scaling and other math functions, and outputs voltage and real power (wattage) results to the display board by lighting particular LED segments. The power is calculated internally by multiplying the amps and volts with an assumed power factor of 1.0.The outboard LEDs display generator voltage. A green LED indicates the generator voltage is within +/- 5% of 125 VAC, a yellow LED indicates within +/- 10%, and a red LED indicates a voltage outside of +/- 10%.
The inboard LED bar graphs display generator power. The segments are marked with their appropriate wattages to a resolution of approximately 5% of maximum power. Segments are green up to 85% of maximum power. Between 90% and 100%, the segments are yellow. A red segment indicates power draw above 100%.
Electronic Meter Specs
| Electrical Ratings (3 models) | 5.0kW, 20 amps, 125/250Vac (EM5001) 7.5kW, 30 amps, 125/250Vac (EM7501) 12.5kW, 50 amps, 125/250Vac (EM1251) |
| Ambient Temperature Range | 0C to 40C (32F to 104F) |
| Max Humidity | 80% RH below 31C (88F) 50% RH above 31C (88F) |
| Max Altitude | 2000 meters (6,500 feet) |
| Transient Overvoltage Limits | category II |
All the following items are included so you don't have to go searching for some of these hard-to-find items:
| - NEMA 1 enclosure with hinged door | - 16 ga wire for voltage connections |
| - electronic meter | - heavy-gauge extra flex wire for current inputs |
| - spring mounting clip for meter | - ring-tongue terminals for terminal block |
| - (2) current sensing transformers | - slip-on terminals for meter connections |
| - barrier terminal block | - wiring diagram & instructions |
| - wire ties |
Donut current sensing transformers have 0.35" diameter windows and 12" leads.
Following meters ranges are available and can be ordered using drop-down menu below.
| Electronic Meter Model | Generator Continuous Rating | Continuous Current Rating | L-N Voltage | L-L Voltage |
| EM5001 | 5,000 watts | 20 amps | 125VAC | 250VAC |
| EM7501 | 7,500 watts | 30 amps | 125VAC | 250VAC |
| EM1251 | 12,500 watts | 50 amps | 125VAC | 250VAC |
Note that this product ships from two different locations. The electronic meter ships direct to you from the factory in Wisconsin. After it ships, the balance of the parts ship from Virginia.
Item Number: METERPNL1
Your Price: $149.00
Shipping Weight: 8 lbs.
This item normally ships within 5-10 business days after order acceptance.
Are YOU ready for the next power outage?
We welcome your feedback or questions. Click here to contact us.
See our Terms & Conditions before using information or
ordering from this web site.
Copyright © 1999-2025 NoOutage.com LLC. A Virginia LLC. All rights reserved.
