Q R E L A Y ( s i n g l e - p h a s e ) I N S T A L L A T I O N
PREPARATION
In Enphase installations, the single-phase Q Relay (network system relay
controller) acts as a galvanic disconnection device. It is designed for single
phase use and has built in contactors. During specified grid abnormalities,
the Q Relay disconnects the Enphase Microinverters from the AC grid, and
when the voltages return to normal and the grid frequency is in the accept-
able range, the Q Relay reconnects the microinverters to the AC grid. The
Q Relay has built in current sensing that can detect DC current injection
required by VDE V 0126-1-1 requirements.
The Q Relay works together with the Envoy-S to meet the need to
break both line and neutral per grid requirements. See full installation
instructions for the Enphase Envoy-S and/or Enphase Microinverters at:
enphase.com/support
.
It is best practice to install the Q Relay when installing the Envoy-S and
before commissioning the system.
The Q relay is IP-20 rated. You must mount it in an environmentally pro-
tected enclosure. Typically this is a switchboard.
SAFETY
IMPORTANT SAFETY INSTRUCTIONS.
SAVE THIS INFORMATION.
Follow all safety and assembly instructions when installing the
Q Relay.
Safety Instructions
+
DANGER
: Risk of electric shock. Risk of fire. Do not
attempt to repair the Q Relay; it contains no user-ser-
viceable parts. Tampering with or opening the Q Relay
will void the warranty. Warranty void if cover removed. If
the Q Relay fails, contact Enphase Customer Support for
assistance (
http://enphase.com/global/contact/
).
+
DANGER
: Risk of electric shock. Always open or discon-
nect circuit from power-distribution system (or service) of
building before installing or servicing the Q Relay.
+
DANGER
: Risk of electric shock. Do not use Enphase
equipment in a manner not specified by the manufac-
turer. Doing so may cause death or injury to persons, or
damage to equipment.
+
DANGER
: Risk of electric shock. Be aware that installa-
tion of this equipment includes risk of electric shock. If
you wire the Q Relay at the sub-board, always de-energise
the sub-board before beginning.
+
DANGER
: Risk of electric shock. Risk of fire. Only qualified
personnel should troubleshoot, install, or replace the Q
Relay.
*
WARNING
: Before installing or using the Q Relay, read
all instructions and cautionary markings in the technical
description and on the Q Relay.
*
WARNING
: Risk of equipment damage. When installing
the Q Relay in an enclosure, choose an area for installa-
tion where ambient temperature remains between -40º
C and 50º C.
✓
NOTE
: Perform all electrical installations in accordance
with all national and local electrical codes.
✓
NOTE
: Install a residual current circuit breaker if required
by national regulations.
✓
NOTE
: To ensure optimal reliability and to meet warranty
requirements, the Enphase Q Relay must be installed
according to the instructions in this guide.
A
Hz
Q RELAY
TEST
B
C
D
I1●
I1
I2●
I2
I3●
I3
I1●
I1
I2●
I2
I3●
I3
1 / 5 2 / 6 3 / 7 4 / 8
NO
RefGen Com / DRM Ø
C
Production
Consumption
Digital Input
Relay
PD, B300
OVC II
CU, 2.5 mm
2
, 75C
MEAS CAT III
OVC III
L1
L2
L3
N
0 1 2 3 4 5 6 7 8
AU/NZ: DRM Port
N: blue
L: brown
LED1
LED2
Enphase Energy, 1420 N. McDowell Blvd, Petaluma, CA 94954 USA
© 2018 Enphase Energy. All rights reserved.
Enphase Customer Support: enphase.com/en-us/support/contact
INSTALLATION
+
DANGER! Risk of electric shock. Always de-energise circuits before
beginning wiring.
A ) Install the Enphase Envoy-S as directed in steps 1 - 4 of the
Envoy-S Quick
Install Guide
.
B ) Install the Q Relay in a protected environment (e.g., switchboard) on a
35 mm DIN rail near the Envoy-S.
C ) Connect the Line and Neutral conductors from the PV system to the
lower terminals of the Q Relay so that the Neutral is on the left terminal
and the Line is on the right terminal.
D ) Connect a Neutral conductor from the upper left terminal of the Q Relay
to the Neutral busbar.
E ) Connect a Line conductor from the upper right terminal of the Q Relay to
an IEC/AS/NZS 60947-2 approved circuit breaker rated for no more than
20A. The circuit breaker must be suitably located and easily reached. It
must also be marked as the disconnecting device for the PV system.
F ) Energise the circuit.
G ) Upon power up, the LEDs should both turn green to indicate the AC
voltage and frequency are within specification of the grid code. See the
LED states table.
H ) Use the Enphase Installer Toolkit to send a grid profile to the Q Relay and
microinverters as directed in Step 5 of the
Envoy-S Quick Install Guide
.
LED States
LED # 1
(voltage)
LED # 2
(Hz, DCI)
Description
Condition
Relay
OFF
OFF
AC on terminals too low
Unpowered;
non-functional
OPEN
GREEN
(solid)
X
Phase voltage within range
--
--
RED
(solid)
X
One or more voltage setpoints
has timed out or reconnection
value not met
Fault
OPEN
GREEN
(solid)
GREEN
(solid)
Voltage, frequency within range
& DCI, if used, is below fault
levels
Normal
CLOSED
X
GREEN
(solid)
Line frequency (and DCI, if
used)are within limits
--
--
X
RED
(solid)
Grid frequency timed out or
reconnection value not met
Fault
OPEN
RED
(flashing)
RED
(flashing)
No profile set; device not
configured
Fault
OPEN
RED
(solid)
RED
(solid)
Test button in use
Test
contactor
toggle
state
Wiring Diagram
Specifications
Over voltage category
III
Pollution degree
2
Operating AC voltage range for power
supply
230 to 240 Vrms
Nominal input frequency
50 Hz
Voltage and frequency acquisition time
on valid input during normal operation
100 ms (5 line cycles @ 50Hz)
Output
2-pole normally open relay (L1 and N)
Output power rating
4.8 kVA
Output rating (typical)
230 to 240 VAC, 20A
Power consumption
10 VA
Conducted and radiated EMI
IEC 61326-1, BS EN 61000-3-2, BS EN 61000-
3-3, BS EN 50065-1, BS EN 50065-2-2
Operating temperature range
-40 °C to 50 °C
IP rating
IP 20 (must be in protected environment)
Relative humidity
0 to 95 non-condensing
Compliance
IEC 61010
Key:
A
: Output from system
B
: From grid
C
: Envoy-S terminal block
D
: Switchboard
