GST7666 Three-phase Keypad Prepayment Energy Meter
GST7666 is a three-phase multi-function energy meter with embedded communication modules to accurately measure energy for commercial,industrial & residential customers and is suitable for the envi
Details
GST7666 is a three-phase multi-function energy meter with embedded communication modules to accurately measure energy for commercial,industrial & residential customers and is suitable for the environments with unstable voltage.
The meter could be used for either prepayment (compliant with STS standard) or postpayment applications (optional),with outstanding anti tamper functions like detection of terminal cover opening to help utilities in revenue protection. It could utilize M-bus, PLC or RF to communicate with CIU (Customer Interface Unit) as an option.
Main Features
| ·Multi-tariff ·DLMS/COSEM compliant ·20-digit STS encryption ·Tamper detection & recording ·Infrared port/RS485/RF(optional) |
·Import & export energy measurement ·LCD display capable of reading without power ·Disconnecting on overload & no-credit condition ·Programmable warning of power limit & low credit ·Max demand measurement & load profiling (customizable) ·Dual power source switchable between power grid & solar system |
Split-type Structure for Anti-tampering Protection
The meter consists of two parts, the MCU (Metering & Control Unit) and CIU (Customer Interface Unit), which could be linked via communication modes of M-bus, PLC or RF based on requirements.
The CIU is installed inside the customer’s home for inputting prepayment token and searching for information, while the MCU is normally installed in a meter enclosure away from the customer’s home.
ELECTRICAL PARAMETERS
| VOLTAGE/FREQUENCY/CURRENT | |
| Nominal voltage Un |
3x230/240V
|
| Limited voltage |
60% ~ 120%Un
|
|
Frequency
|
50/60Hz±5%
|
|
Basic current(Ib)
|
10A
|
|
Maximum current(Imax)
|
100A
|
|
Starting current(Ist)
|
30mA
|
|
Active energy constant
|
1000imp/kWh
|
|
ACCURACY
|
|
|
Active energy as IEC62053-21
|
Class 1.0
|
|
Reactive energy as IEC62053-23
|
Class 2.0
|
|
POWERCONSUMPTION
|
|
|
Voltage circuit
|
<2W <8VA
|
|
Current circuit
|
<1VA
|
|
TEMPERATURERANGE
|
|
|
Operation range
|
-25℃ ~ +70℃
|
|
Storage range
|
-40℃ ~ +85℃
|
INSULATION
| Insulation level | 4kV rms 1min |
| Impulse withstand voltage | 8kV 1.2/50 μs |
ELECTRO MAGNETIC COMPATIBILITY
| ELECTROSTATIC DISCHARGES | |
| Contact discharge | 8kV |
| Air discharge | 15kV |
| ELECTROMAGNETIC RF FIELDS | |
| 27MHz to 500MHz typical | 10V/m |
| 100kHz to 1GHz typical | 30V/m |
| Fast transient burst test | 4kV |
| MECHANICAL REQUIREMENTS | |
| Meter case protection class | IP54 |
| Insulation system classification | Protection class II |
| Maximum cable size | 10 mm |
