10
Reactive power
var
Measurement of Three-phase Reactive Power (var)
The measurement is POSITIVE for dials 1 and 2, NEGATIVE for dials 3 and 4.
var
-796
Three-phase apparent power
VA
Value of Three-phase Apparent Power (VA)
VA
46177
Totalizing of total active energy consumed
kWh+
Total Active Energy consumed (kWh)
kWh+
78973588
Totalizing of total active energy produced
kWh-
Total active energy produced (kWh)
kWh-
1347
Totalizing of total reactive energy
kvarh
Total reactive energy (kvarh)
kvarh
45921
Total counter
T Time
The instrument’s operating time in hours and minutes (hhhhh:mm)
T Time
97163:58
Partial counter
R Time
Time since last reset in hours and minutes (hhhhh:mm)
R Time
80445:21
Relay
Out
ONLY FOR “S” MODELS
Status of output relay contact (On=closed) and source of the threshold
Out= On
Src= Wt
OPERATION OF THE PROGRAMMABLE THRESHOLD
The “S” models allow you to apply a maximum or minimum threshold as a percentage of the required size, in relation to its intended full scale.
Required size (Th1 Src) Full scale (= 100.0%) Description
W+ CT Set * VT Set * 3 Max or Min of instantly consumed active power
W- CT Set * VT Set * 3 Max or Min of instantly produced active power
Hz 100Hz Max or Min of frequency measured on V1
3Vf VT Set * 1,73 Max or Min of a phase-to-phase voltage
V12 VT Set * 1,73 Max or Min of V12
V23 VT Set * 1,73 Max or Min of V23
V31 VT Set * 1,73 Max or Min of V31
3Vn VT Set Max or Min of a phase-to-neutral voltage
V1 VT Set Max or Min of V1
V2 VT Set Max or Min of V2
V3 VT Set Max or Min of V3
3A CT Set Max or Min of a current
A1 CT Set Max or Min of A1
A2 CT Set Max or Min of A2
A3 CT Set Max or Min of A3
An CT Set * 3 Max or Min of An
The threshold activation (threshold active) point is the condition “more than Th1 Val” if Th1 Sel = Hi; otherwise “less than Th1 Val” if Th1
Sel = Lo. The threshold’s quiescent operating (threshold inactive) point is the condition “less than or equal to Th1 Val” if Th1 Sel=Hi;
otherwise “more than or equal to Th1 Val” if Th1 Sel=Lo. The “active threshold” condition attempts to CLOSE the relay’s “NO” contacts and
this occurs instantly unless there is the delay Th1 Dly if Th1 DD is “Off-On”. The “inactive threshold” condition attempts to OPEN the relay’s
“NO” contacts and this occurs instantly unless there is the delay Th1 Dly if Th1 DD is “On-Off”.
There are 2 cases whereby the output relay does NOT mirror the threshold condition. These are as follows:
• During the first 10 seconds from starting up the instrument, when the relay is kept inactive to avoid unwanted operation while the
measurements are stabilized, and
• when the settings are being programmed on the keypad, it is kept at the same status at the time of starting the procedure, to prevent
partial modification of the settings from causing unwanted change to its status.
Relay status is shown on the display at page “OUT”, together with the title of the size of the threshold selected in Th1 Src.
Closing of the relay also determines flashing of the LED associated with the selected size (when applicable), providing the selected
measurement page is not the one associated with the LED, in which case the LED light remains steady.
“S485” Models
When Th1 Sel=OFF (threshold OFF), there is the option of controlling the relay directly by means of MODBUS commands to open and
close INSTANTLY, regardless of the Th1 Dly and Th1 DD settings. “Src=REM”(REMOTE) appears on the OUT page to indicate remote
access of the relay.
PROGRAMMING
For programming, press and hold the RIGHT-HAND button (for 4 seconds or more). The first page to appear when you are granted access
to the programming mode is the one of programmable values. Releasing the button will make the display flash (to indicate you are in
programming mode) and the pages begin to scroll through slowly (one every 4 seconds or so), indicating the title and value of the current
1RAEM4 Impaginato I_GB_SPA:1 11-02-2009 17:37 Pagina 10
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