4
Single-phase Voltage Relay
K8AB-VW
Cat. No. N144-E1-02
■
Specifications
Note:
The reset value is valid only for automatic resets.
Allowable power supply voltage range
85% to 110% of power supply voltage
Allowable power supply frequency range
50/60 Hz
±
5 Hz
Input frequency range
40 to 500 Hz
Overload capacity
Continuous input: 115% of maximum input, 10 s max.: 125% of maximum input
Setting error
Operating value
Set value
±
10% full scale
Operating time
Power ON lock time
Set value
±
0.5 s
Repeat error
Operating value
Operating value
±
2%
Error calculation: Error = ((Maximum operating value
−
Minimum operating value (over 10 operations))/2)/
Average value
×
100%
Reset value (See note.)
Overvoltage Operating value
×
95%
±
2%
Undervoltage Operating value
×
105%
±
2%
Error calculation: Error = ((Maximum reset value
−
Minimum reset value (over 10 resets))/2)/Average value
×
100%
Operating time
Operating time repeat error:
±
50 ms
Overvoltage:
Measured when input suddenly changes from 0% to 120% of setting.
Undervoltage:
Measured when input suddenly changes from 120% to 0% of setting.
Power ON lock time
Power ON lock time repeat error:
±
0.5 s
(The operating time when the operating time is set to the minimum value and the power supply suddenly
changes from 0% to 100%.)
Temperature influence
Operating value
Drift based on measured value at standard temperature:
−
20
°
C to standard temperature:
±
1,000 ppm/
°
C max.
Standard temperature to 60
°
C:
±
1,000 ppm/
°
C max.
(Humidity: 25% to 80%)
Operating time
Fluctuation based on measured value at standard temperature:
−
20
°
C to standard temperature:
±
10% max.
Standard temperature to 60
°
C:
±
10% max.
(Humidity: 25% to 80%)
Humidity influence
Operating value
Based on ambient humidity of 65%
25% to 80%:
±
5% max.
Operating time
Based on ambient room humidity
25% to 80%:
±
10% max.
Influence of power supply voltage
Operating value:
±
5% max.
Operating time:
±
10% max.
Note:
The error in the operating value and operating time under standard conditions.
Influence of power supply frequency
Operating value: ±5% max. (at 45 to 65 Hz)
Operating time: ±10% max. (at 45 to 65 Hz)
Note:
The error in the operating value and operating time under standard conditions.
Influence of input frequency
At 40 to 500 Hz
Operating value ±5% max.
Operating time ±10% max.
Note:
The error in the operating value and operating time under standard conditions.
Applicable
standards
Conforming standards
EN60255-5 and EN60255-6
Installation environment (Pollution Degree 2, Overvoltage Category III)
EMC
EN61326
Safety standards
UL508
Insulation resistance
20 M
Ω
min.
Between external terminals and case
Between power supply terminals and input terminals (excluding models with DC power supply)
Between power supply terminals and output 1 terminals
Between power supply terminals and output 2 terminals
Between input terminals and output 1 terminals
Between input terminals and output 2 terminals
Between output 1 terminals and output 2 terminals
Dielectric strength
2,000 VAC for one minute
Between external terminals and case
Between power supply terminals and input terminals (excluding models with DC power supply)
Between power supply terminals and output 1 terminals
Between power supply terminals and output 2 terminals
Between input terminals and output 1 terminals
Between input terminals and output 2 terminals
Between output 1 terminals and output 2 terminals
Noise immunity
1,500 V power supply terminal common/normal mode
Square-wave noise of ±1
µ
s/100 ns pulse width with 1-ns rise time
Vibration resistance
Frequency 10 to 55 Hz, 0.35-mm single amplitude, acceleration 50 m/s
2
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance
100 m/s
2
, 3 times each in 6 directions along three axes (up/down, left/right, forward/backward)
Degree of protection
Terminal section: Finger protection