2 TECHNICAL SPECIFICATION
Current Input
I.
CT secondary 1 A or 5 A (ordering option)
II.
Nominal Burden at rated current (without tripping condition) O/C CT < 4.2 VA (@ In = 1 A)
O/C CT < 4.5 VA (@ In = 5 A)
E/F CT <0.10 VA ( @ In= 1A)
E/F CT <0.10 VA ( @ In= 5A)
III.
Thermal withstand capacity 50 x rated current (In) for 1 sec
30 x rated current (In) for 3 sec
2 x rated current (In) continuous
IV.
Operating range For O/C : 0.2 – 35 In
For E/F : 0.1 – 35 In
V.
Measurement accuracy Typical ± 2% at In for Phase and EF CTs
VI.
Nominal Frequency range for current Inputs 50/60 Hz (selectable in P15D Menu)
VII.
Minimum current required to energize the relay 1Ø ≥ 20% In, 2Ø ≥ 12% In and 3Ø ≥ 8% In.
VIII.
Frequency measurement range 45 Hz – 65 Hz
Auxiliary Supply
I.
Nominal auxiliary voltage 24-50 V DC or 100 – 230 V DC /AC (50 Hz / 60 Hz) (ordering option)
II.
Operating range 80% of lower nominal range and 120% of upper nominal range for DC
supply
80% of lower nominal range and 110% of upper nominal range for AC
supply
III.
Nominal Burden on 100 – 230 V auxiliary power supply 100-230 VAC <10 VA (no output or LED energized)
<12VA (status S1, S2 & S3 energised)
100-230 VDC <4W (no output or LED energised)
<4W (status S1, S2 & S3 energised)
IV.
Nominal Burden on 24 - 50 VDC auxiliary power supply <3 W (no output or LED energized)
<4 W (status S1, S2 & S3 energised)
V.
Tolerable AC ripple Up to 15% of highest dc supply, as per IEC 60255-11: 2008
VI.
Relay power up time with auxiliary supply <50 ms
VII.
Auxiliary Power Supply Voltage Interruption (without
powering by CT)
As per IEC 60255-11, within auxiliary supply range
100 – 230 V DC, the relay will withstand a 50 ms;
100 – 230 V DC, the relay will withstand a 50 ms;
24-50 V DC, the relay will withstand a 20 ms;
Opto Isolated Input
I.
Nominal voltage range Same as Auxiliary supply range
24 - 50 VDC or 100 – 230V DC /AC (50Hz / 60Hz)
II.
VA Burden of Status Inputs (S1, S2 & S3) For 100 to 230V AC nominal voltage range < 0.8 VA
For 100 to 230V DC nominal voltage range < 0.8 W
For 24V to 50V DC nominal voltage range < 0.5 W
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