Solar inverters
ABB junction box with monitoring
PVS-JB-8-M
The ABB junction box connects solar
modules to an ABB central inverter.
The junction box features eight inputs
along with string current monitoring
and extensive protection.
To ensure maximum yield from
a photovoltaic power plant, key
components need to be monitored and
alarms raised when necessary. The
ABB junction box provides the required
monitoring through separate current
measurement for each of the eight input
channels. Thus, each string status is
monitored separately and can respond
independently to any plant malfunction.
The ABB central inverter provides
complete system monitoring through
connection with a Modbus network.
Both inverter and string monitoring data
can be read through the same interface
and monitored remotely.
The ABB junction box is equipped with
an IP66 rated enclosure to protect
the cabling against extremes of heat
and humidity. In addition robust screw
clamp terminals make for easy cable
connection.
The junction box provides string
fuses to protect both the positive and
negative lines. Fuse holders can be
easily accessed to replace damaged
fuses. Overvoltage protection and
circuit breakers are included as
standard.
With 1000 volts (V) rating, the junction
box is suitable for high system voltages.
Versatile I/Os enable easy connection
of irradiance and temperature sensors
to the system. Digital inputs and relay
outputs complete the I/O interface.
Highlights
− Complete all–in-one solution
− Separate current monitoring for eight
strings
− Positive and negative string fuses
as standard with easy-to-open fuse
holders
− Overvoltage protection and circuit
breaker
− Extensive I/O connections for
additional sensors and alarms
3AUA0000100224 REV A EN 9.5.2011 #15635
ABB junction box connection principle
Modbus
DC line
Technical data and types
Type code
PVS-JB-8-M
Input
Maximum DC voltage
1000 V
Maximum DC current per channel
14 A
Maximum DC current total
80 A
Number of strings
8
String cable terminal
Screw clamp, 16 mm2
String cable inlet
Cable gland, max diameter 10 mm
Fuse
10 x 38 mm, 4 A, 6 A, 8 A, 10 A, 12 A 1), 14 A
Fuse holders
ABB openable holder for each + and -
Output
Cable connection
Screw clamp, 70 mm2
Cable output
Cable gland, max diameter 21 mm
Disconnector switch
ABB Tmax, T1 D 160 PV
Overvoltage protection
ABB OVR
General data
Width / Height / Depth
460 / 700 / 260 mm
Weight
20 kg
Protection rating
IP66
Permitted ambient temperature
-20 to +50 ˚C
Relative humidity (non-condensing)
0 to 95 %
All connection cable glands
IP68 cable glands at bottom
Monitoring board
External power supply
110 to 230 V AC 50/60 Hz
Power consumption
< 12 W
Data cable maximum length
1200 m
Overvoltage protection status
Yes
I/O interface
Internal temperature measurement
Yes
External temperature measurement
2 x PT-100
Reference PV cell
0 to 500 mV
Analog inputs
0 to 10 V / 0 to 20 mA
Digital inputs
2
Relay outputs
2
1)
12 A fuse included
For more information contact
your local ABB representative or visit:
www.abb.com/solar
www.abb.com
© Copyright 2011 ABB. All rights reserved.
Specifications subject to change without notice.