Reduced values are valid
in case of repeat testing casing : Does not apply to the terminal connected to a common Aux supply.
Accuracy
: + .03 Hz
Timer Range
: .05 to 7.35 Sec. for under & over
Frequency stage.
No of tripped stage
: 2 for UFT -21
3 for UFT -31
4 for UFT- 41
Burden :
Contacts in relay
: 3 pair of N/O contact make & carry
7500 VA for 0. 25 with maxima of
30 A & 300 VAC or DC Carry contentiously 5 A AC/DC. Break 1250 VA AC/50 W DC resistive, 25 W L/R
= 0. 04 S. Subject to maxima of 5A & 300 V
Reset Ratio
: 100%
Frequency setting range : 39.00 to 70. 00 Hz in step of .1Hz
Operations of the relay can be tested by means of a test, button which energies the output relays & LED’s after set time delay with the channels set to underover frequency operation. Access to the test push button requires removal of the front...
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