Voltage To Pt Inputs; Current To Ct Inputs - Veesta World V-PM2000 Series User Manual

VP-2040 Enhanced IED
V-PM2000 Series, Veesta Power Measurement
Instructions & User's Manual
6.4

Voltage to PT inputs

6.5

Current to CT inputs

Item Code
1 General
2 Type
3 Polarity
4 Class of Accuracy
5 Rated Burden
6 Withstand Voltage
7 Frequency
8 Ratio
9 Rated Error
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The VP-2040 allows input voltage range from 0~400Vac between
voltage inputs (V1, V2, V3) and voltage neutral (VN). These inputs
can be direct connected or supplied via from external PTs. If the
measured voltage is greater than 400VAC, external PTs are
required. The voltage reference input (VN) is the common of
measured voltage input as VR = VN input for 3 phase 4 wire WYE to
phase voltage measurement and as VR = V2 input for 3 phase 3 wire
to line voltage measurement.
"All connection to the VP-2040 voltage inputs should be in serious
connection with buses with a 2 Amp rating to ensure adequate
interrupting capacity"
The VP-2040 allows input current in 1.0A rated and 5.0A rated based
on ordered model. Please refer to Chapter 2 - Model & Ordering for
detail information.
If you connect wrong Current Transformer (CT) to the VP-2040 your
device may damage (for example you ordered 1.0A input rating and
connect to 5.0A CT or connect to the protection CT) or may loss the
accuracy (for example you ordered 5.0A input rating and connect to
1.0A CT). So it is important before order device choose the right
product model.
Also it is important to select the correct CT type for VP-2040 device.
Please see bellow table for some detail specifications for choosing
the right CT for connect to VP-2040 IED device.
Table 6-6: VP-2040 Recommendation for choosing CTs
Definition
The CTs shall be suitable for metering purpose
Ring or Window Type
Shall have mark for primary and second leads
Better than 0.5
Better than 5.0 VA
> 3Kv
50 Hz
1.0A or 5.0A (Depend on VP-2040 order code)
5% of Rated of primary < 1.5%
20% of Rated of primary < 0.75%
100% of Rated of primary < 0.5%
120% of Rated of primary < 0.5%
Chapter 6 - Unit Installation
Page 44 of 100