Product Introduction
This device employs an advanced dedicated integrated circuit design for electricity meters, integrating multiple
functions into a single system. It enables remote multifunctional metering, multi-parameter monitoring, data
freezing, and event logging. The system features overload alarms, automatic power disconnection alerts for phase
loss, and phase loss detection records. Equipped with dual RS485 interfaces and a built-in high-power magnetic
latching relay, it supports remote meter reading and billing, energy usage data analysis, and secure power management.
Product Features
■Electricity metering features: Separate measurement of forward and reverse active and reactive power phases, with active power at
0.5-level and reactive power at 2.0-level. It supports total, peak, off-peak, flat, and valley rates, along with maximum demand
measurement.
■The electrical parameter measurement function monitors active power, reactive power, apparent power, real-time voltage, and power factor in real time. It monitors voltage and current in real time, determines voltage loss and starting current threshold, and performs sound and light alarm and event recording.
■Alarm function: When the electricity meter has alarm events such as loss of voltage, loss of current, reverse phase sequence, overload,
power reversal, battery under voltage, cover opening, or receives remote alarm command, the indicator light and buzzer will alarm, and the alarm relay signal can be output, and the cover can be closed or removed.
■Power-off control: When the remote management system issues a power-off or power-on command, the electricity meter automatically cuts off the user’s load or restores power usage.
Household electricity
■Data freezing function: It supports timed freezing, instant freezing, scheduled freezing, and daily
freezing through communication ports. Data can be read via RS485 or infrared communication ports.
■Event logging: Records the last 10 events, including programming, reset, time synchronization, phase voltage loss,
phase disconnection, phase current loss, current imbalance, reverse phase sequence of voltage and current, cover
opening, and overload, along with their start and end times. These events can be retrieved via the communication
interface for anomaly analysis.
■Communication interfaces and protocol: Equipped with two fully isolated RS485 and infrared communication
interfaces, featuring lightning protection and overvoltage resistance, compliant with the DL/T645-2007 standard protocol
Technical Parameter
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Item |
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Project |
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Accuracy class |
Active power: 0.5 level; reactive power: 2.0 level |
Working temperature |
-25℃~66℃ |
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Voltage range |
Un±30%Un 50Hz |
Ultimate temperature |
-40℃~75℃ |
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Clock error |
Warm hard clock, ≤0.5/d |
Relative humidity |
≤95% (no condensation) |
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Voltage specification |
Three-phase four-wire: 3×57.7/100V 3×220/380V |
Three-phase three-wire: 3×100V |
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Connected to the transformer |
Rated current (In): 1.5A 5A |
Maximum current (Imax): 2~4In |
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Direct access |
Base current (Ib): 5A,10A,15A,20A |
Maximum current (Imax): 4~9lb |
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Power dissipation |
Voltage circuit: ≤1.5W per phase, 6V |
Current circuit: ≤0.2VA per phase (Ib) |
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Battery capacity |
Internal clock: 13.6V 1.2Ah lithium battery |
External clock: 23V1.4Ah lithium batteries |
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Pulse output |
Constant: 400ipm/kwh to 6400ipm/kwh; Width: Default is 80ms ± 20ms; Both can be set |
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CI |
1 infrared, 2 RS485; RS485 baud rate: 2400bps; infrared baud rate: 1200bps |
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Starting current/standstill |
When the current loop shows no current and the voltage is increased to 115% of Un, The output should not exceed one pulse within 10 times the time of one pulse at starting current |
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