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12.
Specifications
12.1 Common specifications
Item
Phase wire
Voltage circuit (Note 1)
Current circuit
Frequency
Auxiliary power supply ratings
Tolerances for main body (not
including current sensor)
Data updating period
Demand time limit setting range
(1) Wh
(integrated value)
(2) Max. and min. values
(3) Upper and lower limit
values
(4) Setting data
Clock
Clock backup time
Clock accuracy (Note 4)
Connection to
Sensor cable
sensor
Wiring length to
current sensor
Connection to
Cable
display unit
Wiring length
Number of
connected units
Consumed VA
Voltage circuit
Current circuit
Auxiliary power
supply circuit
Working temperature range
Working humidity range
Storage temperature range
Withstand voltage at commercial
frequency
Insulation resistance
Installing method
EMU2-RD3-F/C
Applicable to single-phase 2-wire, single-phase 3-wire and 3-phase 3-wire
EMU2-RD5-F/C
EMU2-RD7-F/C
EMU2-RD2-F/C-4W
Applicable to 3-phase 4-wire
EMU2-RD4-F/C-4W
EMU2-RD3-F/C
110V, 220V, 440V, 690V, 1100V, 2200V, 3300V, 6600V, 11000V, 13200V, 13800V, 15000V, 16500V,
EMU2-RD5-F/C
22000V, 24000V, 33000V, 66000V, 77000V, 110000V
EMU2-RD7-F/C
EMU2-RD2-F/C-4W
63.5/110V, 110/190V, 120/208V, 220/380V, 240/415V, 254/440V
EMU2-RD4-F/C-4W
50A, 100A, 250A, 400A, 600A
(The dedicated split type current sensor is used. The current on the current sensor primary side is displayed in any
case.)
5A
(The dedicated split type 5A current sensor is used. The 5A sensor is used in a 2-stage structure in combination
with a current transformer (CT), and the primary current can be set to up to 30000 A.) (Note 2)
50 Hz/60 Hz (automatic frequency discrimination)
100 VAC to 220 VAC (+10%, −15%) 50 Hz/60 Hz
Current, voltage, electric power, reactive power and freq.
Power factor
Electric energy and reactive power energy
High-frequency current and high-frequency voltage
500 msec
* The integrated values of Wh and varh are constantly accumulated (following short-cycle load fluctuations).
0, 10 sec, 20 sec, 30 sec, 40 sec, 50 sec, 1 to 15 min (in 1-min steps), 20 min, 25 min and 30 min
(1) to (3) : Stored in EEPROM (nonvolatile memory) (stored in period of 10 min and stored upon power failure)
(4)
: Stored in EEPROM (nonvolatile memory) (stored upon change in settings)
* Upon occurrence of power failure, the measurements and settings shown left are not erased.
The clock IC is backed up by a capacitor.
Accumulated time of power failure: Approx. 168 hours (at 25°C) (Note 3)
* The clock is initialized (12:00 on Jan. 1, 2003) when the accumulated time exceeds the setting.
Approx. 1 min/month
Use of dedicated cable (optional)
For split-type 5A sensor: Extension of 10 m (10.5 m in combination with the length of the cable supplied with the
sensor)
Split-type sensor: Extension of up to 50 m
Use of dedicated cable
Extension of up to 10 m
Up to 7 units (To connect two units or more, power supply and connecting cables (optional) for display units are
necessary.)
0.1 VA at each phase (at 110 V AC) or 0.2 VA at each phase (at 220 V AC)
0.1 VA at each phase (on primary side of current sensor)
EMU2-RD3-F
At 100 VAC: 6.5 (8.0) VA, at 220 VAC: 8.0 (9.5) VA
EMU2-RD5-F
At 100 VAC: 8.0 (9.5) VA, at 220 VAC: 9.5 (11.0) VA
EMU2-RD7-F
At 100 VAC: 9.5 (11.0) VA, at 220 VAC: 11.0 (12.5) VA
EMU2-RD3-C
At 100 VAC: 7.5 (9.0) VA, at 220 VAC: 9.0 (10.5) VA
EMU2-RD5-C
At 100 VAC: 9.0 (10.5) VA, at 220 VAC: 10.5 (12.0) VA
EMU2-RD7-C
At 100 VAC: 10.5 (12.0) VA, at 220 VAC: 12.0 (13.5) VA
−5°C to 55°C (daily mean temperature: 35°C or less)
30% to 85%RH (no condensation)
−10°C to 60°C
Between all electric circuits and housing
Between all current circuits (on current sensor primary side) and voltage circuits
and auxiliary power supply
Between all current circuits (on current sensor primary side) and voltage circuits
and all output
Between all voltage circuits and all current circuits (on current sensor primary
side)
10 MΩ or more (500 V DC) in the same places as shown above
Installation with IEC rail
(25/32)
Specification
:±1.0% (to rating input)
:±3.0%
:±2.0% (range of 5 to 100% of rating, power factor 1)
:±2.5%
The parenthesized values
apply in the case where the
display unit EMU2-D65 is
used.
1500 V AC for 1 minute
1500 V AC for 1 minute
1500 V AC for 1 minute
1500 V AC for 1 minute
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