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 M¥Ø/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, per UL61010, 100 A for 1 second (thermal) |
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 % In3 |
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 |
Accuracy |
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 ¥ìsec (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.
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 input line, it is recommended to use UL listed Class RK5 fuses above 2 A/500 V.