Novar 315 Training manual

NOVAR 315
6 Stage Capacitor Controller for
Power Factor Correction
Commissioning Instructions
NOVAR315
Issue : March 2005

NOVAR 315 Commissioning Instructions NOVAR315
Page 2 of 10
1 INTRODUCTION
There is a warning symbol on the equipment, an exclamation mark within a triangle. This alerts the
user to refer carefully to these Commissioning Instructions before installing, commissioning or
operating the equipment.
WARNINGS
1. Installation, commissioning and maintenance should only be carried out by suitably qualified
personnel.
2. Terminations exposed during installation, commissioning and maintenance may present a hazard
unless the equipment is electrically isolated.
3. The equipment should only be operated as intended, e.g. within the specified electrical and
environmental limits.
4. Susceptibility to Electrostatic Discharge : 8 kV air discharge / 4 kV contact.
This specification applies for direct contact with the terminals and via air discharge. If the device is
opened, appropriate ESD precautions must be taken. The human body can generate potentially
damaging electrical discharges so care must be taken to earth oneself effectively before removing
the NOVAR 315 from its housing. Use of a wrist strap connected to earth through a 1 MΩresistor
is recommended.
5. If High Voltage capacitors are to be used, set the safety lockout time before applying current to the
NOVAR 315 (refer to Section 5 for the setting procedure).
2 COMMISSIONING
The NOVAR 315 should be connected to the system according to the wiring diagram on the rear of
the case. Ensure that the current and voltage connections are made to the correct terminals and have
the required phase relationship. Capacitors must be connected on the load side of the CT.
Fuses (0.5 A rated) should be connected in the voltage inputs as shown on the wiring diagram.
The following settings need to be made :
Sequence, Safety lockout time, Stage limit, c/k, Target cosϕ, Harmonic alarm (optional), Type of
switching (rotational or linear), Type of stepping (double or single) and System Phase.
All the necessary adjustments are accessible via the controller fascia (see Figure 1).
2.1 NOVAR POWER UP
Apply voltage and current to the NOVAR 315
The NOVAR 315 should display “315” for a few seconds during its self test.
It will then enter AUTO mode and display the power factor value.
If not, see sections 2.2 and 2.3
2.2 CONNECTION ERROR
If the voltage or current connections have been made to the wrong phase, the NOVAR 315 will
display the phase angle by which the current leads the voltage to assist with connection fault-finding.
For example : At unity power factor with a reversed CT, the display will indicate 270°.

NOVAR 315 Commissioning Instructions NOVAR315
Page 3 of 10
2.3 CURRENT BEYOND OPERATIONAL LIMITS
If the current is below 10% of nominal rating, the NOVAR 315 will display “_ _ _” ; it will however,
function correctly as a capacitor controller. If the current is higher than 120% of nominal rating “A-HI”
will be displayed and relay switching will stop. Switching will recommence once the current has fallen
below 120% of nominal rating.
3 AUTO MODE
The NOVAR 315 will be in AUTO mode after switching on, otherwise press and hold .
Capacitors will be connected to the system automatically as required to correct the load.
In AUTO mode the NOVAR 315 will display cosϕ, % system voltage, Vn, and % system current, In.
The nominal Vn and In values are printed on the label.
The power factor is displayed as a number when lagging. An additional c denotes a leading power
factor.
If the input lagging vars exceed the c/k setting, IND will be displayed to the right of the AUTO and
capacitors will be connected. If the input leading vars exceed the c/k setting, CAP will be displayed to
the left of the AUTO and capacitors will be disconnected.
Rotate through the displays by repeatedly pressing .
A
UTO
Power factor
dis
p
la
y
ed
% rated current
displayed
% rated voltage
displayed
A
UTO
%Vn
%In
Cosϕ
A
UTO
%Vn
%In
Cosϕ
%Vn
%In
Cosϕ
Fn

NOVAR 315 Commissioning Instructions NOVAR315
Page 4 of 10
4 MANUAL MODE
Enter MANUAL mode from AUTO mode by pressing the button once.
The capacitor switching is controlled with or as follows
display :
a) Press once. The NOVAR 315 will switch on the capacitors up to
the set limit one after the other after the safety lockout time elapses. Once
the limit is reached, the alarm output, if fitted, is switched on.
b) Press once, as soon as the number of capacitors required are
connected. Switching of the capacitor stages is now stopped and the alarm
is switched off.
c) Press once more. The NOVAR 315 will then switch off the
capacitors in sequence.
d) Press and hold to return to the “AUTO” mode.
WARNING
THE MANUAL FACILITY SHOULD NOT BE USED TO DISABLE CAPACITORS FOR
MAINTENANCE PURPOSES.
5 CHANGE SETTINGS MODE
NOTES :
•Even with no current, the settings may be changed.
•Just before the change settings mode is reached, all capacitor stages will be switched off
automatically. A safety lockout time will be imposed to allow the capacitors to discharge before
any further switching.
•When in the change setting mode, if no settings have been changed for five minutes, the NOVAR
315 will automatically reset and return to normal operation including all the new settings.
•A setting is changed when the button is pressed.
Before starting the setting procedure, press and hold the button until the NOVAR 315 is in the
AUTO mode with cosϕdisplayed.
switch on
MANUAL
MANUAL
MANUAL
standby
switch off
Fn
Fn
Fn
Fn

NOVAR 315 Commissioning Instructions NOVAR315
Page 5 of 10
5.1 SETTING PROCEDURE See diagram in 5.2
Press the button twice so that the selected sequence is displayed.
Press once and then change the displayed number to equal the security code (located on the
rear label) using the or buttons. The code is accepted when is pressed.
The alarm indicator “ “ flashes when the setting mode is entered.
The settings can now be displayed by repeatedly pressing and releasing to loop through them.
Adjust each setting, as required, using or .
Press and hold until “End” is displayed and press to return to normal operation.
Display :
a) Sequence :
Set the Sequence required from 00 to 07. Further details and explanation
about these sequences are provided in Section 6, SEQUENCES.
b) Safety Lockout time :
Set the safety lockout time to suit the installation. The available times are from
10 to 600 seconds in 10 second increments.
c) Stage limit :
Set this (from 1 to 6) to the number of capacitor stages to be controlled.
d) c/k :
Setting range = 0.03 to 1
where V = nominal primary system voltage.
I = primary rating of the current transformer.
Example :
Smallest capacitor step size = 100 kvar
CT primary rating = 500 A
Primary system voltage = 3300 V
a) Target cosϕ:
Setting range : 0.80 lagging
to 0.95 leading (additional c displayed)
b) Harmonic alarm : OPTIONAL
The harmonic resonance detection level is from 1% to 5% in increments of 1%.
It can be disabled by selecting the final position (above the 5% setting)
designated “hOFF”.
c) Switching type :
Rotational →“On” / Linear →“OFF”
d) Stepping type :
Single →“OFF” / Double →“On”
e) Phase :
Three phase connection (P3) or single phase (P1) can be selected.
smallest capacitor step size (in vars) x 5
√3 V I
100000 x 5 = 0.17
√3 x 3300 x 500
c/k =
c/k =
Fn
Fn
Fn
Fn
The Novar 315 should be rated at
the nominal secondary voltage of
any VT used.

NOVAR 315 Commissioning Instructions NOVAR315
Page 6 of 10
5.2 CHANGE SETTINGS MODE DIAGRAM for adjusting settings
Cos ϕ displayed
security code
e.g. 121
Fn
or
Fn
Fn
Fn
Fn
Fn
To change the settings :
use and
Sequence display
Fn
Fn
Fn
Fn
to display security code
Fn
A
UTO
A
UTO
A
UTO
A
UTO
Harmonics Option
enter security code
MANUAL
Fn
Fn

NOVAR 315 Commissioning Instructions NOVAR315
Page 7 of 10
Figure 1. NOVAR 315
Stages in
123456Alarm
Fn
%Vn
%In
Cosϕ
Novar
300
C
B
A
Fascia Key
A- NOVAR front case classified IP52
B- High Definition liquid crystal display
C- Function keys

NOVAR 315 Commissioning Instructions NOVAR315
Page 8 of 10
6 SEQUENCES
Sequence number Sequence
Maximum No. Steps per controller for
1 sta
g
e 3 sta
g
e 6 sta
g
e
S 00 1:1:1:1:1:1 1 3 6
S 01 1:1:2:2:2:2 1 4 10
S 02 1:2:2:2:2:2 1 5 11
S 03 1:2:3:3:3:3 1 6 15
S 04 1:2:3:4:4:4 1 6 18
S 05 1:2:4:4:4:4 1 7 19
S 06 1:2:3:6:6:6 1 6 24
S 07 1:2:4:8:8:8 1 7 31
When each capacitor stage has the same value, e.g. 50, 50, 50, 50 kvar, sequence S 00 should be
selected.
For systems with different step ratios, choose the appropriate sequence.
For example, for 50, 100, 100, 100 kvar, choose sequence S 02.

NOVAR 315 Commissioning Instructions NOVAR315
Page 9 of 10
7 DISPLAY MODE for displaying the settings
Repeatedly press and release the button to loop through and display the settings. NOVAR 315
continues to operate in the AUTO mode during this procedure. Press and hold the button to
return to AUTO and the cosϕdisplay.
7.1 DISPLAY DIAGRAM
Fn
Fn
Fn
FnFn
Fn
Fn
Fn
Fn
MANUAL
Fn
Fn
A
UTO
Fn
Fn

NOVAR 315 Commissioning Instructions NOVAR315
Page 10 of 10
DANGER !
OPEN CIRCUIT CURRENT TRANSFORMERS ARE DANGEROUS.
THE CURRENT TRANSFORMER SECONDARY SHOULD BE SHORT-CIRCUITED BEFORE THE
CONTROLLER INPUTS ARE DISCONNECTED.
Electromagnetic Compatibility Directive 89/336/EEC
Emissions standard EN50081-2 1994 Industrial environment
Immunity standard EN50082-2 1995 Industrial environment
(IEC801 parts 2, 3 and 4)
Susceptibility to Electrostatic Discharge 8 kV air discharge / 4 kV contact.
WARNING : If the device is opened, appropriate ESD precautions must be taken.
Low Voltage Directive 72/23/EEC
Designed to EN61010-1 1993 safety requirements.