Hi,
My P8000T has a 30mA RCD. It trips when the QUATTROS II relays click to connect it.
I tried to Google this, and I think it has its own MEN.
I have a 3-phase system with Quattro II, and the generator is on AC 1. The grid is on AC 2.
Is there an alternative way to make it work without disabling the RCD in the P8000T?
Best,
Andreas
I guess there will be a bypass operation next week 
No there is no other way than bypassing this, Victron inverters seem to have a sequencing problem with GFCI’s on the input and the grounding (MEN) relay in the Multi’s and Quatro’s.
@MikeD I did that, and now it works in bypass mode, charging the batteries. But it is about 53Hz unloaded and around 52Hz at 50% load.
So the inverter is never active.
Enabling UPS, strange things happen, like drawing 10A from L1 for a few seconds and then disconnecting (Limit is 6A) . Can it still be a MEN problem?
How can I get Power Assist to work if the inverter is not active? Now I only have bypass and charging. Works in an emergency, but not what I want…
Best,
Andreas
TAB: General
System frequency 50Hz
Shore current 6.0 A
Overruled by remote checked
Secondary input shore current 25.0 A
Overruled by remote unchecked
Dynamic current limiter checked
State of charge when Bulk finished 95.0 %
Battery capacity 200 Ah
Charge efficiency 0.95
TAB: Grid
Country / grid code standard Europe: EN50549-1:2019
AC input 1 Generator (Grid code “Other”, no LOM detection)
AC input 2 Above selected gridcode plus LOM B (compliant)
Accept wide input frequency range (45-65 Hz) checked
AC low switch mains off 195 V
AC low switch mains on 205 V
AC high switch mains on 248 V
AC high switch mains off 253 V
UPS function unchecked
TAB: European grid code settings
Use AUX1 as disable FeedIn signal unchecked
Maximum AC current for charge or feed in 100.0 %
Maximum generated apparant power 100.0 %
connect waiting time 60 s
connect power ramp 0.0 seconds
low frequency connect value 49.500 Hz
high frequency connect value 50.600 Hz
low voltage connect value 85.00 % Un
high voltage connect value 110.00 % Un
re-connect waiting time 60 s
re-connect power ramp 600.0 seconds
low frequency re-connect value 49.500 Hz
high frequency re-connect value 50.600 Hz
low voltage re-connect value 85.00 % Un
high voltage re-connect value 110.00 % Un
rise-in-voltage protection U> 110.00 % Un
under voltage stage 1 85.00 % Un
under voltage stage 1 delay 0.20 s
over voltage stage 1 110.00 % Un
over voltage stage 1 delay 60.00 s
under frequency stage 1 47.500 Hz
under frequency stage 1 delay 0.50 s
over frequency stage 1 51.500 Hz
over frequency stage 1 delay 0.50 s
under voltage stage 2 80.00 % Un
under voltage stage 2 delay 0.20 s
over voltage stage 2 115.00 % Un
over voltage stage 2 delay 0.20 s
under frequency stage 2 47.000 Hz
under frequency stage 2 delay 0.20 s
over frequency stage 2 53.000 Hz
over frequency stage 2 delay 0.20 s
P(f>) start frequency 51.500 Hz
P(f>) stop frequency 50.200 Hz
P(f>) start delay 0.50 s
P(f>) stop delay 0.00 s
P(f>) droop 5.00 %
P(f<) start frequency 47.500 Hz
P(f<) stop frequency 49.800 Hz
P(f<) start delay 0.50 s
P(f<) stop delay 0.00 s
P(f<) droop 5.00 %
P(U) response Not used
Reactive power regulation Use a fixed Cos Phi
Filter time for reactive power 3.3 s
Cos phi 1.00
Use lock-in/out unchecked
TAB: Inverter
PowerAssist checked
Assist current boost factor 3.0
Inverter output voltage 230 V
Inverter DC shut-down voltage 44.00 V
Inverter DC restart voltage 48.00 V
Low DC alarm level 48.00 V
Do not restart after short-circuit (VDE 2510-2 safety) unchecked
enable AES unchecked
TAB: Charger
Enable charger checked
Weak AC input checked
Stop after excessive bulk unchecked
Lithium batteries checked
Disable VSense (for diagnostic purposes) unchecked
Configured for VE.Bus BMS unchecked
Charge curve Fixed
Absorption voltage 52.40 V
Float voltage 51.00 V
Charge current 50 A
Repeated absorption time 1.00 Hr
Repeated absorption interval 7.00 Days
Absorption time 1 Hr
TAB: Virtual switch
TAB: Usage
Virtual switch usage Do not use VS
TAB: Assistants
TAB: Assistant Configuration
programmable relay (size:176)
*) Use ACOut 2 relay.
*) Set relay off
*) when Auxiliary input 2 is open for 1 seconds.
programmable relay (1) (size:37)
*) Use ACOut 2 relay.
*) Set relay on
*) when Auxiliary input 2 is closed for 1 seconds.
ESS (Energy Storage System) (size:1052)
*) System uses LiFePo4 with other type BMS
(This can be either a BMS connected via CAN bus (e.g. a Lynx Smart BMS) or a
BMS system in which the batteries are protected from high/low cell voltages by
external equipment.)
*) The battery capacity of the system is 200 Ah.
*) Sustain voltage 50.00 V.
*) Cut off voltage for a discharge current of:
0.005 C= 44.60 V
0.25 C= 44.40 V
0.7 C= 44.30 V
2 C= 44.20 V
*) Inverting is allowed again when voltage rises 1.20 V above cut-off(0).
*) Relevant VEConfigure settings:
Total size of all assistants including the required
(hidden) system assistants is: 1339
TAB: Advanced
limit internal charger to prioritize other energy sources unchecked
So: Time to tweak the governor of the generator. Gen should run about 52Hz at no load, and 50.5 - 50.8 at 50% load. I’m not familiar with setting up as quatro - I normally work with the MP2’s completely off grid. However, given that the low frequency / high frequency disconnect/reconnect appear twice in you above settings list, makes me wonder if these can be set differently for the 2 AC inputs, as one would expect*. Seems that despite the wide frequency range box being checked, the gen frequency range is too restricted.
Seems the only option here to get the boost function working would be to reset the generator frequency. However, depending on the gen type, reducing the RPM to correct the frequency may also reduce the output voltage. If this is the case, and the gen is capacitor regulated, then this (voltage) can be increased by increasing the value of the gen capacitor slightly. This may take some trial and error to get the machine correctly set. This is easier with AVR regulated sets - the voltage is independent of the frequency.
I assume this happens after the generator is accepted, and it must also apply to the other settings. In my case, if the frequency isn’t between 49.5Hz and 51.5Hz, the inverter won’t operate. That means no UPS function and no power boost. I believe it should be adjustable somehow, but I’m not sure how. I’ve tried reaching out for support by email, but haven’t received any response yet. It is a AVR block in the schematic. But looks like it’s only controls the voltage.
The governor screw that adjusts the frequency will be located between the top of the recoil housing, and the top of the air filter / Carburetor.
It’s a small screw that is easily adjustable.
