Specifications
Indicator Line-up,
Precautions & Specifications
24
Standards
Excerpts from Japanese standards
⎫
⎬
⎭
Power supply circuit
Voltage circuit
Current circuit
Voltage circuit
Short-time
overload
Continuous
overload
Influencing item
DC measured
quantity
Ripple
Distortion
Frequency
Voltage component
Current component
Overshoot
Response time
Damping
Drop-out frequency
Pull-in frequency
Open circuit
Vibration
Impact
Synchroscope
Vibration/Impact
AC measured
quantity
Test conditions
Measure important points under standard conditions
Temperature varies ±10°C from standard temperature (23°C)
Leave for 96hr in states of 25% and 80% relative humidity, respectively
20% input, and 45–65Hz and 90–130Hz current (AC) superimposed
AC, DC, W :
20% third harmonic wave content (W: with each measured circuit)
PF, F :
15% third harmonic wave content (PF: with each measured circuit)
Var y by ±10% from reference frequency
Var y by ±15% from reference voltage
Vary by 20 to 120% of rated current
Power factor varies from 1 to 0.5 (var: lagging phase angle: 30°)
One current circuit removed
One voltage circuit removed
Incline of 5°to the front/back/left/right from the standard attitude
Magnetic field of 0.4kA/m
Mounted to a 2mm-thick steel-plate panel
Mounted to a 1.5mm-thick (or thicker) aluminum panel
Input of approx. 2/3 scale length; measure initial overshoot distance
Input of approx. 2/3 scale length; measure time to settle within 1.5%
Changes at 1 to 3 minutes after and 30 to 35 minutes after applying a 90% input.
Apply power 10-fold that of the rated power nine times for 0.5s at 60s
intervals and one time for 5s.
Apply voltage double that of the rated voltage nine times for 0.5s at 60s
intervals and one time for 5s.
Apply current 120% that of the rated current for 2h
Apply voltage 120% that of the rated voltage for 2h
Apply current 30-fold that of the CT nominal secondary current for 2s
(applies to indicators combined with a CT of 1 to 10A)
40°C for 16h, -25°C for 8h (repeated three times)
Measure deviation after applying the maximum value of the measurement range for 30s and zero point setting for 15s.
Maximum adjustment value in increasing/decreasing directions
Frequency when rotation stops after increasing and then decreasing the starting circuit frequency.
Frequency when rotation starts after increasing and then decreasing the starting circuit frequency.
Open starting-circuit or operating-circuit side
10–65–10Hz, amplitude: 15mm
Sweeping speed: 1 octave/min., No. of sweeps: 5
490m/s
2
in X-, Y- and Z-, forward and reverse directions (repeated three times)
±100% of the accuracy class
100% of class index
100% of class index
50% of class index
100% of class index (rectifying type is exempt)
100% of class index
100% of class index
100% of class index
100% of class index
200% of class index
200% of class index
50% of class index
Movable iron core: 6%; others: 1.5%
Within limits of inherent error
Within limits of inherent error
20% or less if the full deflection angle is less than 180°; 25% or less otherwise
4s or less
100% of class index
Within limits of inherent error
Within limits of inherent error
Current circuit does not open
Within limits of inherent error
50% of class index
Range: 2% or 2° or more
For 3-phase: 1.5Hz or more
For 1-phase: 1Hz or more
Index indicates synchronization point ±30 externally
100% of class index
Performance
Inherent error
Ambient temperature
Humidity
Power factor
Phase balance
Interference between multiple phase
indicator elements
Attitude
External magnetic field
Ferromagnetic support
Conductive support
Self-heating
Conduction of current circuit after
large current overload
Temperature limit value
Deviation from zero point
Mechanical zero-point adjuster
Type of measured quantity
DA
DV
AA
AV
W
VAR
FPFSY
(1) JIS C 1102-1 ~ -9
Test item
Test conditions
Dielectric breakdown and flashover must not
occur.
Metal and resin connected: basic insulation
Ungrounded metal: reinforced insulation or double
insulation
Performance/Reference value
Voltage test
Clearance and creeping distance
Between entire measurement circuit and outer casing
The test voltage value is defined according to the operating circuit voltage.
50Hz/60Hz effective AC voltage, 5s
Between an external portion that an operator can touch and an internal
circuit that is not insulated from the input.
The clearance and creeping distance are defined according to the operating
circuit voltage.
Type of measurement
DA
DV
AA
AV
W
VAR
FPFSY
(2) JIS C 1010-1 (Measurement Category
#
, Pollution Degree 2)
Operating circuit voltage
100V
150V
300V
600V
Standard insulation Reinforced insulation or double insulation
Clearance
0.5
1.5
3.0
5.5
Creeping distance
1.4
1.57
3.0
6.0
Test voltage value
840
1390
2210
3320
Clearance
1.5
3.0
5.9
10.5
Creeping distance
2.8
3.14
6.0
12.0
Test voltage value
1390
2210
3480
5200
Representative operating circuit voltages and the clearance and creeping distance required
Test item Test conditions
5MΩ or more
Performance/reference value
Insulation test
Between entire measurement circuit and outer casing
Apply 500VDC and measure
Type of measurement
DA
DV
AA
AV
W
VAR
FPFSY
Note 1
(3) Reference (JIS C 1102-1: 1997 specified standard)
Note 1. JIS C 1102-1 is not specified in 2007.