

LY312 Three-Phase Electric Energy Meter---On-Site Calibration Instrument
Introduction
The portable calibrator L312 is especially designed for the needs of metering engineers for on-site testing with high precision. The equipment offers the highest functionality together with excellent menu-guided operation through LCD. It is the perfect instrument to reduce technical and non-technical technicallosses.
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LY312
Voltage | error range | 25-600V | |
starting measured value | 0.5V | ||
rating value | 440V | ||
error grade | ±0.05% | ||
Current | terminal | rated Ie | 5A |
range | 0.025A-12A | ||
clamp meter | rated Ie | 5A、100A、500A、1000A | |
range | 0.5%Ie—2.4Ie | ||
starting current | 0.02%Ie | ||
Input frequency range | 45-65Hz | ||
Frequency measurement error | ±0.01Hz | ||
Phase measurement range | -180°- 180° | ||
The maximum of phase error | ±0.1° | ||
(Harmonic wave percentage)(harmonic wave electrical data)(harmonic wave electric energy measuring times) | 2-51(times) | ||
Pulse constant(note:Ie is rated current) | Low frequency output(three stalls) | 5A | 3600P、36000P、360000P/kWh(kvarh、kVah) |
other | 3600P、36000P、360000P *(5/Ie)P/kWh(kvarh、kVAh) | ||
Internal high frequency | 5A | 1.8x109 P/kWh | |
other current stalls | 1.8x109 *(5/Ie)P/kWh | ||
The highest pulse input frequency | 50kHz | ||
5A terminal | Full wave/fundamental wave kWh、P、U、I | ±0.05% | |
Full wave/fundamental wave Kvarh.Q.VA.Vah | ±0.2% | ||
Harmonic wave U.I.P.Q.S | ±0.2%H (H=1+0.01k K=2-51) | ||
5A clamp meter | Full wave/fundamental wave kWh、P、U、I | ±0.2% | |
Full wave/fundamental wave Kvarh、Q、VA、Vah | ±0.2% | ||
Harmonic wave | ±0.5% H (H=1+0.01k K=2-51) | ||
Self- checking current circulating output current | 0.05A,0.1A,0.25A,0.5A,1A,2.5A,5A | ||
Self-checking error (linear and angular difference) | ±0.1% | ||
(Large current clamp) | Full wave/fundamental wave kWh、P、U、I | ±0.5% | |
Full wave /fundamental wave Kvarh、Q、VA、Vah | ±0.5% | ||
Harmonic wave U.I.P.Q | ±1.0% H (H=1+0.01k K=2-51) | ||
Other | Ratio measurement | ±0.5% |