Novar NOVAR-1xxx NRC Operating Manual - 1. Application
Novar-NRC
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1. Application
1.1 Remote Controlled Target Power Factor Compensation Systems
When connecting major sources to medium voltage network, a remote control of reactive power is
often required. One possibility is to control target power factor using pulse signals from distributor (eg,
transmitted via a GPRS modem). Such equipped compensation systems can be implemented using
the Novar1xxx NRC power factor controller and the NRC86 remote controller.
1.2 Remote Controlled Outputs Compensation Systems
Alternatively, the NRC86 controller in combination with the Novar1xxx NRC power factor controller can
be used for remote controlled outputs compensation systems.
In practice, there may be cases where compensation capacitors must be placed at great distance from
the measuring current transformer (CT). Since the maximum length of the wires to the CT is limited
due to the limited maximum loop impedance, in some cases the power factor controller cannot be
installed in a switchboard with capacitors but at the measurement point near the CT. In such cases, it
is necessary to install a multi-core power cable connecting the controller with capacitor contactors. If,
for technical or other reasons, this solution is impossible and there exists a suitable communication
channel (cable or other media) between the points, the NRC86 remote controller can be used for
driving the capacitor contactors.
1.3 History of Firmware Versions
Novar 1xxx NRC
version
date of release
note
1.3
10/2010
- basic version
1.4
8/2011
- THDI alarm replaced with adjustable current limit undercurrent
alarm ( parameters 30, 40)
1.5
11/2011
- RCC/IO communication error fixed
1.6
09/2012
- combined RCC and I/O operation and multiple NRC86 units
performance support added
1.7
04/2013
- “Alarm by import with adjustable limit and fixed outputs release at
export" function added
1.8
10/2013
- PF display error at undercurrent alarm activation correction
NRC 86
version
date of release
note
0.1
10/2010
- basic version
0.2
01/2011
- „I/O“-mode for two NRC86 units added
0.3
04/2011
- general I/O device feature added
1.0
09/2012
- combined RCC and I/O operation and multiple NRC86 units
performance support added
1.4 Manual Structure
This Operating Manual describes the NRC86 remote controller and the Novar1xxx NRC controller’s
specific features only. At least basic knowledge of Novar line power factor controllers is necessary for
understanding it.