Ashida ADR241B, Instruction Manual

Page: 27 / 272

ADR241B
Doc ID : ADR241B-DO_IM_01
Ref ID : ADR241B/IM/I&S
Rev No. : 06
Page No. : 27 of 272
1.3 Technical Specifications
AC Measuring Input:
I. Measurement Accuracy Typical ± 2% at In for Phase and EF
II. Nominal Frequency Range
For Current Inputs
50/60 Hz (Selectable in ADR241B Menu)
III. Frequency measurement
range
45 Hz – 65 Hz
IV. Phase rotation ABC
Current Input:
I. CT secondary 1 / 5 Amp. (Selectable)
II. Nominal Burden at In
(without tripping condition)
< 0.20 VA at rated current (In)
III. Thermal Withstand Capacity 40 x rated current (In) for 3sec
2 x rated current (In) continuous for Phase and EF CT
IV. Measurement Linearity
Range for Non – Offset AC
Current
Linear up to 40 In
Auxiliary Supply Input:
I. Nominal operating range 24 – 230V AC (50Hz / 60Hz) or
24 – 230V DC
II. Voltage 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 24 –
230V Auxiliary Power
Supply
24 – 230
VAC
< 12 VA for Basic model without TCP
communication card
24 – 230
VDC
< 4 W for Basic model without TCP
communication card
IV. Tolerable AC ripple Up to 15% of highest dc supply, As per IEC 60255-26:
2013
V. Relay power up time < 2.5 Sec
Opto Isolated Input:
I. Opto Isolated input operating
Range
24 – 230 VDC
II. Threshold Voltage for DC 18V +/- 3volts
Maximum operating voltage
range (RMS Voltage)
250 VDC