ROOTECH ACCURA 2300S, Manual

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Chapter 4 Accura 2300S Operation/Setup Accura 2300S/2350-1P3FSC User Guide
Page 94 ⓒ 2015 Rootech Inc. All Rights Reserved
Reference Voltage
Reference voltage is the reference value for Dip(Sag)/Swell detection and bar graph display. The
reference voltage should be the primary voltage value and does not have to be the same value as the
rated voltage. In case of the 3P4W or 1P3W connection mode, the device uses a line-to-neutral voltage
value as the reference voltage, but the user can select the line-to-line or line-to-neutral voltage when
setting up the reference voltage. Even when the user selects the line-to-line voltage as the reference
voltage and inputs the line-to-line voltage value, the device converts the entered value to the line-to-
neutral voltage value and operates based on the value.
In case of the 1P2W connection mode, line-to-line and line-to-neutral voltage values are the same.
Setup Range Description
V
L-L
/ V
L-N
1
Line-to-line voltage or line-to-neutral voltage
selectable
Uref Pr[d][d][d][d][d][d] 2 Reference voltage on the primary side
000001 – 999999 1 – 999,999 V
(default 380 V)
1. It can be selected only in the 3P4W and 1P3W connection modes, but it is fixed to line-to-line voltage in other
connection modes.
2. d
→
decimal number
In each voltage connection mode, the reference voltage is determined as follows.
Connection Mode Ref. Voltage on the
Device Ref. Voltage Setup
Items Description
3-phase 4-wire
(3P4W)
Line-to-neutral
voltage Line-to-line voltage(V
L-L
) Reference(line-to-neutral) voltage
=
1 √3 ⁄
* the set line-to-line voltage value
Line-to-neutral
voltage(V
L-N
)
Reference(line-to-neutral) voltage
= 1* the set line-to-neutral voltage value
3-phase 3-wire
(3P3W)
Line-to-line voltage Line-to-line voltage(V
L-L
) Reference(line-to-line) voltage
= 1* the set line-to-line voltage value
1-phase 3-wire
(1P3W)
Line-to-neutral
voltage Line-to-line voltage(V
L-L
) Reference(line-to-neutral) voltage
=
1 2
⁄
* the set line-to-line voltage value
Line-to-neutral
voltage(V
L-N
)
Reference(line-to-neutral) voltage
= 1* the set line-to-neutral voltage value
1-phase 2-wire
(1P2W)
Line-to-neutral
voltage Line-to-neutral
voltage(V
L-N
)
Reference(line-to-neutral) voltage
= 1* the set line-to-neutral voltage value
Demand Sub-interval
Accura 2300S uses the sliding window method for demand calculation.
Demand time[min] = Demand sub-interval time x Number of demand sub-intervals
ex) In Korea, the most commonly used demand subinterval is 15 minutes, and the number of
demand subintervals is 1. Refer to 「 Chapter 5 Measurement > Demand Measurement 」 for details.