Doc: I437GB04_16.docx 09/03/2016
p. 15 / 37
M08 - SWITCH
Unit
Default
Range
P08.01
Transfer device type
Pulse control breakers
Pulse control brk.
Continuous control brk.
Contactor
P08.02
Transfer strategy
OBP OBP
OAP
P08.03
Maximum load not powered time
(alarm A09 tripping delay)
sec
60
OFF / 1…3600
P08.04
Automatic return on priority line inhibition
OFF
OFF / ON
P08.05
Genset start delay
sec
OFF
OFF / 1-6000
P08.06
Genset rotation interval
OFF
OFF
1h-2h-3h-
4h-6h-8h-
12h-
1d-2d-3d
4d-5d-6d-7d
P08.07
Genset rotation time
h
0 0...23/OFF
P08.08
Genset rotation minutes
min
0 0...59
P08.09
Distance between genset startups
sec
15 0-9999
P08.10
EJP operating mode
Normal Normal
EJP
EJP-T
SCR
P08.11
EJP start delay
min
25 0-240
P08.12
EJP switch delay
min
5 0-240
P08.13
EJP re-switch block
ON
OFF / ON
P08.14
Closed transition enable
OFF OFF
ON
OFF-SYNC
P08.15
Max. V delta
%
5 0
- 25
P08.16
Max. Hz delta
Hz
0.5 0.0
- 10.0
P08.17
Max. Phi delta
°
5.0 0.0
- 10.0
P08.18
Synchronisation dwell time
sec
0.50 0.00
- 10.00
P08.19
Max. synchronisation time
sec
60 0
- 1000
P08.20
Instantaneous parallel time
sec
0.25 0.01
– 5.00
P08.21
Increase-decrease voltage/frequency pulse ON time
sec
0.5 0.1-10.0
P08.22
Increase-decrease voltage/frequency pulse OFF time
sec
1.0
OFF / 0.1-10.0
P08.01
- This defines the transfer device type for power lines valid for all breakers BRKn defined in menu M07.
Pulse breaker
= Motorised breakers with pulse
control.
Continuous breaker
= motorised breakers with continuous control.
Contactor
= Contactor coil control.
P08.02 -
This defines the transfer strategy.
OBP
= (Open Before Presence) this means that in automatic mode the opening control of a switch is generated when the
line is beyond the limits regardless of the alternative line state.
OAP
= (Open After Presence) this means that in automatic mode the opening control of a
breaker is only sent after an alternative line is present in the limits.
P08.03 -
If in automatic mode all the sources are simultaneously non available for longer than this time alarm
A09 load timeout not powered
.
P08.04 -
If
this parameter is enabled after a transfer to an alternative line the return on the priority line does not occur automatically when it is re-established but
must be controlled in manual mode.
OFF
= Automatic return
ON
= Return to manual.
P08.05
- Motor start-up delay when the priority line is not within the set limits. If it is set to OFF, the starting cycle starts at the same time as the opening of the
priority line breaker.
P08.06 - P08.07 - P08.08 -
These parameters allow a timed rotation in the application with multiple gensets exchanging the priority between the gensets. P08.06
defines the rotation interval between the gensets. The day of the day at which the rotation will occur is defined by P08.07 and P08.08. If the rotation range
is higher than 24h, then the rotation always occurs at the indicated time every n days. If it is lower than 24h, then it occurs at the indicated time and in the
sub-multiples. For example, if the time is set to 12:30 with the rotation every 6h, there will be a rotation at 12:30, one at 18:30, one at 0:30 etc.
P08.09 -
This defines the time which separates the starting for one unit from the following one. If this time elapses after sending a start control without having
detected the presence of voltage, alarm
A2n Line n genset not available
is generated and the system starts a second genset, where available.
P08.10
- This defines the EJP operating mode.
Normal
= Standard opening mode in AUT mode.
EJP
= Two programmable inputs are used set with Start remote
load off and remote transfer for operation as EJP. When the start input is closed, the motor start delay time (P08.11) is activated at the end of which time
the starting cycle is run. Subsequently, when the transfer enable is received, is the generated started correctly, the load is transferred from the main line to
the genset line. The load goes back to the priority line when the transfer enable opens and the genset runs the start cycle when the start input opens. The
EJP function is enabled only if the system is in automatic mode. The protections and alarms work as usual.
EJP-T
= The EJP/T function is a simplified
variant of the previous EJP, where the genset start-up is controlled identically, but the load is transferred in timed manner instead of with a specific external
signal. This function thus uses a single digital input, i.e. the starting input. The transfer delay time starts from when the starting control is closed and can be
set by means of parameter P08.12.
SCR
= The SCR function is very similar to the EJP function. In this mode, the start input enables the genset start up as
EJP, but without waiting for the start delay time P08.11. The remote transfer input has the function of enabling the transfer which occurs after the transfer
delay P08.12.
P08.11 -
Delay between arrival of the EJP genset start signal and the actual start signal.
P08.12 -
Load switch delay from priority line to secondary line in EJP and SCR mode.
P08.13 -
If ON, in EJP mode, EJP-T and SCR the load is not transferred back on the priority line in case of genset failure but only when the signals on the EJP
inputs enable them.
P08.14
- Closed transition enable. This allows to define how the load will be transferred between two power sources, which are both present.
OFF
= the load will be
transferred with transition open (default).
ON
= the two sources are synchronised (where possible) or spontaneous synchronisation will be expected within
a limit time. The synchronisation thresholds are defined by parameters P08.15 - P08.16 - P08.17 - P08.18. In presence of all synchronisation conditions
the load will be transferred with closed transition and instantaneous parallel. Obviously, the breakers and external protections must be appropriately
configured in this case.
IN-PHASE
= In this case, the synchronisation conditions will be sought but transfer will occur in all cases with the transition open.
In this case, the load is passed to a new source the amplitude and phase of which is synchronised with the previous one.
P08.15
- Maximum voltage difference between the two sources to be synchronised expressed as a percentage of the rated voltage.
P08.16
- Maximum frequency difference between the two sources to be synchronised.
P08.17
- Maximum phase angle difference between the two sources to be synchronised.
P08.18
- Minimum simultaneous dwell time between the three previous conditions before the synchronism is considered reliable.
P08.19
- Maximum waiting time for the synchronisation conditions. After this time, an open transition is performed.
P08
.
20
- Instantaneous parallel time in closed transition.
