2
All instrument multifunction meters shall Measure the
following:
The current, the voltage, active power, reactive power, apparent
power, active energy, reactive energy, power factor and
frequency.
3
Accurate measured values with error limits:
Less than 0.5% for the Voltage (V) and the Current (I).
4
Good legibility with high-contrast:
At least 14 mm SCREEN or LED displays.
5 Electrically isolated current inputs.
6 Four quadrant operations.
7
Connection options:
- Single-phase.
- Or three-phase 3 and 4-wires.
- Suitable for balanced or unbalanced load.
8
Input voltage:
- Phase-to-phase Vp: up to 240 V.
- Programmable (primary and secondary).
9
Nominal input current:
1 A (primary should be programmable)
10 Dimensions:
At least (96 X 96 X ---) mm.
11 Auxiliary supply:
110 ± 10% V DC.
12 Multiple displays:
At least three lines.
13
Outputs:
- Four (4) Analog outputs for (MW, MVAR, V, A) shall be
choosable and programmable using the software tool .
- Each output can be programmed for any quantity.
Contact me/send me your offer via ramzi.v.saba@gmail.com
51
Schedule A - Continued
TECHNICAL PARTICULARS AND GUARANTEES
Item
No
Description
(DATA PARAMETERS REQUIREMENT)
Offered
14
Programmable inputs primary and secondary for C.T, V.T and
the Four required Analogue outputs programmable to any value
inside the required full range:
(-20 mA DC to +20 mA DC).
15 Response time: = 300 ms.
16
The continuous overload rating of the device shall:
1- Shall not be less than 1.3 times rated voltage.
2- Shall not be less than 2 times the rated current.
17
- Programming kit (configuration software + communication
cables) Via Rs 485 port or usb port.
- An additional USB programming port shall be applied.
18
The connection between the device and the RTU in the
substation is done through Modbus/TCP on Ethernet and
Modbus ASCII and Modbus RTU modes with the following
frame structure on RS-485 interface:
- ASCII framing (7-bit ASCII characters).
- RTU framing (8-bit characters)
19
The RS-485 serial communication must have a configurable
range of communication speeds:
- 4800 Bits/seconds .
- 9600 Bits/seconds .
- 19200 Bits/seconds.
With any of the following transmission settings for the RS-485
interface:
- even parity, 1 stop bit
- odd parity, 1 stop bit
- none parity, 1 stop bit
An additional USB programming port shall be applied.
