Deep Sea Electronics Plc DSE8660 MKII

Specification
057-259 ISSUE: 1 Page 14 of 146
2.5 VOLTAGE & FREQUENCY SENSING
Description
Specification
Measurement Type True RMS conversion
Sample Rate 40 kHz
Harmonics Up to 21
st
or better
Input Impedance
300 kΩ phase to neutral
Phase To Neutral
15 V (minimum required for sensing frequency) to 415 V AC
(absolute maximum)
Suitable for 345 V AC nominal
(±20 % for under/overvoltage detection)
Phase To Phase
25 V (minimum required for sensing frequency) to 720 V AC
(absolute maximum)
Suitable for 600 V AC nominal
(±20 % for under/overvoltage detection)
Common Mode Offset From Earth 100 V AC (max)
Resolution
1 V AC phase to neutral
2 V AC phase to phase
Accuracy
±1 % of full scale phase to neutral
±2 % of full scale phase to phase
Minimum Frequency 3.5 Hz
Maximum Frequency 75.0 Hz
Frequency Resolution 0.1 Hz
Frequency Accuracy ±0.05 Hz
2.6 CURRENT SENSING
Description
Specification
Measurement Type True RMS conversion
Sample Rate 40 kHz
Harmonics Up to 21
st
or better
Nominal CT Secondary Rating 1 A and 5 A
Maximum Continuous Current 5 A
Overload Measurement 15 A
Absolute Maximum Overload
50 A for 0.2 second
30 A for 5 second
Burden
0.5 VA (0.02 Ω current shunts)
Common Mode Offset
70 V peak plant ground to CT common terminal under fault
condition
Resolution 25 mA
Accuracy ±1 % of Nominal (excluding CT error)