| Voltage Input |
| Port name |
V1, V2, V3, VN |
| Connector type |
Terminal block1 |
| Wire specification |
0.34 — 2.5 mm2 (22 — 14 AWG), copper |
| Wire temp rating |
Above 70 °C |
| Measurement category |
III |
| Withstand voltage |
AC 3,000 V RMS, 60 Hz for 1 minute |
| Impedance |
10 MΩ/phase |
| Burden |
0.01 VA/phase @ 220 V |
| Wiring method |
3P4W, 3P3W, 1P3W, 1P2W |
| Rated voltage(Un) |
AC 277 V L–N (line-to-neutral) |
| Current Input |
| Port name |
1S, 2S, 3S ports on the power supply side, 1L, 2L, 3L ports on the load side(internal busbar) |
| Connector type |
Terminal block2,3 |
| Wire specification |
2.5 — 6.0 mm2 (14 — 10 AWG), copper |
| Wire temp rating |
Above 70 °C |
|
Rated current
|
5 A nominal/10 A full scale 3~ continuous |
Accura 3000-5A |
per UL 61010, 100 A for 1 second (thermal)
|
| 1 A nominal/2 A full scale 3~ continuous |
Accura 3000-1A |
| Burden |
0.01 VA/phase @10 A |
| Basic Measurement |
| Frequency |
Measuring range |
42 — 65 Hz |
| Basic measurement |
Measuring cycle (gapless) |
0.2 sec (12 cycles @60 Hz, 10 cycles @50 Hz) |
|
Voltage
|
Sampling rate |
512 samples/cycle |
|
Measuring range(accuracy guaranteed)
|
50 – 277 V Line–to–neutral |
| 87 – 480 V Line–to–line (for unearthed Delta & Y systems) |
| Accuracy |
±0.2 % Reading |
IEC 61557-12 Class 0.2 |
| Min. measured value |
5 V Line-to-neutral (based on the device’s input voltage) |
| Measurement data |
Line-to-neutral voltage, Line-to-line voltage |
|
Current
|
Sampling rate |
128 samples/cycle |
|
Measuring range(accuracy guaranteed)
|
1 %In — 200 %In4 |
Accura 3000-5A |
| 5 %In — 200 %In4 |
Accura 3000-1A |
| Accuracy |
±0.2 % Reading |
IEC 61557-12 Class 0.2 |
| Min. measured value |
0.1 % In |
| Measurement data |
Phase current, Fundamental current |
|
Power
|
Accuracy of active power |
IEC 61557-12 Class 0.5 |
| Accuracy of reactive power |
IEC 61557-12 Class 1 |
| Accuracy of apparent power |
IEC 61557-12 Class 0.5 |
|
Energy
|
Active
|
Accuracy |
IEC 62053-22 Class 0.5S |
| Type of energy |
Received, Delivered, Net, Sum energy |
|
Reactive
|
Accuracy |
IEC 62053-24 Class 0.5S |
| Type of energy |
Positive energy, Negative energy |
| Apparent |
IEC 61557-12 Class 0.5 |
| Display |
| FND |
4-digit 7-segment/row, 3 rows |
| External Communication with the Host System |
|
RS–485 communication
|
Protocol |
Modbus RTU protocol |
| Port |
1 port / Ta, Tb |
| Connector type |
Screw-type terminal |
| Communication cable |
UL 2919 RS-485 1P/2P 24 AWG |
| Cable length |
Up to 1,219 m (4,000 ft) |
| Bit rate |
1,200 / 2,400 / 4,800 / 9,600 / 19,200/ 38,400 / 57,600 / 115,200 bps5 |
| Max. number of
connectable modules |
32 per bus5 |
| Power Supply |
| Port name |
L+, N- |
| Connector type |
Screw-type terminal(pluggable)6 |
| Wire specification |
0.25 – 4.0 mm2 (24 – 12 AWG), copper |
| Wire temp rating |
Above 70 °C |
| Power supply voltage (Us)7 |
AC 100 – 240 V, DC 100 – 300 V, CAT II |
| Frequency |
50/60 Hz |
| Operating voltage range |
0.9 x Us – 1.1 x Us |
| Withstand voltage |
AC 3,000 V RMS, 60Hz for 1 minute |
| Operating environment |
Pollution degree 2 |
| Power consumption |
Max. 4 W |
|
Inrush current8
|
Peak 31 A, duration no more than 1 msec (AC 220 V) |
| Peak 11 A, duration no more than 200 μsec (DC 110 V) |
| General |
| Weight |
400 g |
1. The maximum screw tightening torque of the barrier-type terminal block is 1.1 Nm(12 kgf-cm, 10 Ibf-in).
2. The maximum screw tightening torque of the barrier-type terminal block is 1.4 Nm(14 kgf-cm, 12 Ibf-in).
3. When connecting wires to the terminal block, use UL listed lugs.
4. The rated current In is 5 A/1 A.
5. At 115,200 bps, a master can communicate with up to 16 slave devices at a maximum distance of 600 m.
6. The maximum screw tightening torque of the screw-type terminal block is 0.51 Nm(5.2 kgf-cm, 4.5 Ibf-in).
7. The device conforms to UL standards for the tested AC power supply voltage.
8. When installing fuses on the power line, it is recommended to use fuses that are UL-listed with an RK5 class or higher and are rated at 2 A/500 V.
