Hunan Stron Smart Co., Ltd
Stron Metering, Smart Life
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Smart Split Keypad RF-LoRa Three Phase Prepaid Energy Meter With CIU
Product introduction
The STE38-S split keypad prepaid electricity meter is used for measuring the power of three-phase electrical supply, most commonly for commercial use. Currently, consumers using three-phase electricity have not been able to get a digital smart meter installed, however have been able to take advantage of AMR technology–such as three-phase advanced meters – to log their electrical consumption. More and more governments accounced that energy suppliers are allowed to offer larger business consumers a choice between an AMR advanced meter and a smart meter.
The CIU shares the same function as the keyboard on the meter itself, users can input 20 digits TOKEN for recharging or checking information. Various information can be toggled by inputting different short codes. Users can easily retrieve metering data such as daily usage, monthly usage, present current and voltage, balance, and last entered tokens.
The meter can also be integrated with local mobile money for prepayment, like M-pesa, MTN, Airtel through API(Application Programming Interface), which is the agreement connecting the third party APP and our Stronpay vending software. In this way, users can top up electricity credit by mobile money without leaving the house and could check information by their telephone at hand with internet accessibility.
Main features
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Design of three phase, four wire Current range is 10A-100A Switch can be disconnected in case meter has no credits or the current exceeds the defined load limit Relays are used for reconnection/disconnection Buzzer will alarm if low credit/overload Utility and consumers can have transparent system Automatic disconnection with electricity supply for non-payment customers Vending Software is available for communication STS standards |
Main functions
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| Low Credit Alarm | Buzzer can give alarm in case low credit |
| Prepayment | Before getting electricity,users must pay first |
| Load Control |
Load can be disconnected in case the current exceeds the defined load limit |
| Self-testing | This meter can test LCD and relay etc. and report the results directly |
| Event Recording | This meter can record the event of tamper,open cover and purchase event |
| Prepaid and Post-paid Switch | Charge mode can be set prepaid or post-paid |
| Anti-tamper |
Switch will be automatically closed in case magnetic field and open cover event |
| TOU Tariff |
TOU tariff can be set by inputting corresponding TOKEN as request |
| Communication | Available with AMR/AMI system with RF-LoRa module |
| Overdraft Collection | Electricity overdraft can be daily or monthly collected |
| Information Inquiry | Credit remain,total purchased and total consumption can be checked by different short codes |
Electrical parameters
| Nominal Voltage | 3×230V |
| Working Voltage Range | 70%~120%Un |
| Nominal Frequency | 50-60Hz |
| Basic Current (Ib) | 10A |
| Maximum Current (Imax) | 100A |
| Starting Current (Ist) | 30mA |
| Active Energy Constant | 4000imp/kWh |
| Active Energy Accuracy | Class 1.0 |
| Reactive Energy Accuracy | Class 2.0 |
| Power Consumption in Voltage Circuit | <2W <8VA |
| Power Consumption in Current Circuit | <1VA |
| Operation Temperature Range | -25℃-70℃ |
| Storage Temperature Range | -40℃-85℃ |
Electric magnetic compatibility
| AC Insulation Strength | 4kV at 50Hz during 1min | |
| Impulse voltage 1.2/50 us mains connections | 8kV | |
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Electrostatic Discharges
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Contact discharge | 8kV |
| Air discharge | 16kV | |
| Electromagnetic RF Field | 27MHz-500MHz | 10V/m |
| 100KHz-1GHz | 30V/m | |
| Fast transient burst test | 4kV | |
| Protection | Class II | |
How to recharge prepaid electricity meter
1.By Stronpay vending software such as going to local point of sale or with handheld mobile vending unit
2.By the third party platform or local mobile payment with API such as mobile phone
3.By the AMI System such as recharging remotely via DCU and RF-LoRa or PLC module