PHA6516400-04

Meter specifications

The specifications contained in this section are subject to change without notice.

For installation and wiring information, refer to the meter installation sheet.

Mechanical characteristics

IP degree of protection (IEC 60529-1) Front display: IP51
Mounting position Vertical
Display type 6 digit LCD
Keypad 1 button
Front panel LED indicator Energy flow LED
Weight ~ 0.08 kg
Dimensions W x H x D 17.5 x 117 x 63 mm max

Electrical characteristics

Measurement accuracy

Active Energy

A9MEM2050

  • Class 1 as per IEC 62052-11 and IEC 62053-21

A9MEM2055

  • Class 1 as per IEC 62052-11 and IEC 62053-21

  • Class B as per EN 50470-1/3

Voltage inputs

Nominal voltage (U) 230 V AC
Operational voltage 195 to 253 V AC
Insulation capabilities

AC voltage withstand: 4 KV for 1 minute

Impulse voltage withstand: 6 KV for 1.2 μS waveform

Operational frequency A9MEM2050: 50/60 Hz ± 10%
A9MEM2055: 50 Hz ± 10%

Current inputs

Basic current (Ib) 5 A
Maximum rated current (Imax) 45 A
Operational current 0.4%Ib – Imax
Overcurrent withstand 30 Imax for 0.01 s
Operational frequency A9MEM2050: 50/60 Hz ± 10%
A9MEM2055: 50 Hz ± 10%

Power consumption

Internal power consumption ≤2 W/Phase - ≤10 VA/Phase

Pulse characteristics

Test output flash rate (Red LED) 10000 imp/kWh
Pulse output rate 10000/2000/1000/100/10/1/0.1/0.01 imp/kWh
Pulse width

≤5625 W: 32 ms

>5625 W: 11.2 ms

Environmental characteristics

Operating temperature -25 °C to +55 °C (-13 °F to +131 °F)
Storage temperature -30 °C to +70 °C (-22 °F to 158 °F)
Operating humidity ≤75%
Storage humidity ≤95%

Safety

Protective Class II, Insulated encased meter of protective class

Basic errors

0.05Ib

Cosφ = 1 ±1.5%

0.1Ib

Cosφ = 0.5Lag ±1.5%

Cosφ = 0.8Lead ±1.5%

0.1Ib – Imax

Cosφ = 1 ±1%

0.2Ib – Imax

Cosφ = 0.5Lag ±1%

Cosφ = 0.8Lead ±1%

RS-485 communications

Bus type RS-485
Protocol Modbus RTU with 16 bit CRC
Baud rate 1200, 2400, 4800, and 9600 (default)
Address range 1-247 user configurable
Maximum bus load 60 meters per bus
Range 1000 m

Data storage

Backup period The data can be stored for more than 10 years without power
QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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