DSE 8610 MKII, Operator'S Manual

Page: 15 / 188

Specification
Page 15 of 188 057-254 ISSUE: 2
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 k
Ω
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 1 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)