EBU10 Datasheet, PDF (1/6 Pages) ETAL Group – Electronic circuit breaker EBU

Electronic circuit breaker EBU
Description
The electronic circuit protector type EBU (Electronic Breaker Unit)
provides selective overcurrent protection in AC 230 V UPS systems.
It consists of an MCB approved for short circuit interruptions up to
10 kA and of an add-on electronic circuitry, taking over measuring
and evaluation tasks. The product is available with the typical MCB
ratings 4 A, 6 A, 10 A and 16 A with B and C characteristics and is
directly operated at the output of the corresponding UPS.
UPS units often do not supply sufficient power in the event of a short
circuit to trip standard MCBs. The electronic AC circuit breaker can
individually be adjusted to the UPS unit and will therefore reliably trip
in the event of a short circuit. Optimal adjustment of the load’s current
rating allows detection and disconnection of an overload in the load
circuit. This helps exclude the fatal disconnection of the entire output
voltage of the UPS unit.
The Electronic Breaker Unit EBU allows a reduction in size of one
third for UPS units because power reserves do no longer have to
be kept available for tripping. The EBU increases system availability,
reduces overall costs and simplifies electrical planning.
Typical applications
Technical data
Rated voltage U_N
Current ratings I_N
Frequency
Rated insulation voltage
AC 230 V ±10%
4 A, 6 A, 10 A, 16 A
50 Hz
AC 250 V
Electronic overcurrent protection by means of electronic AC circuit
breakers is ideally suited to the selective protection of uninterruptible
power supplies (UPS) in industrial plants. EBU ensures the power
safety provided by AC UPS systems.
Benefits
Rated voltage and
current rating range of
the auxiliary contact
DC 110 V / 0.3 A – 33 W
DC 30 V / 1.1 A – 33 W
AC 120 V / 0.5 A – 60 VA
AC 240 V / 0.25 A – 60 VA
Min. load of aux. contact 3 mA at 24 V
(valid for standard
industrial surroundings,
no aggressive gases)
l Enhanced system availability through effective protection
l Reduction of overall costs by a 1/3 more efficient rating
l Easy planning with a variable overcurrent protection
Reference ambient
temperature
Method of operation
-35 °C...+60 °C
S-type
Order numbering code
Mode of trip / degree
of trip-free behaviour
mechatronic / trip free
(positively trip-free)
4
Max.* cable length (outgoing wire) from generator to EBU
Type No.
EBU Electronic circuit breaker for AC UPS applications
Mounting method
T rail mounting
Design
A adjustability I_N UPS + I_N load
Number of poles
1 1-pole, 1-pole protected electronically
2 2-pole, 1-pole protected electronically
Version
0 with physical isolation by means of MCB 4230-T
Signal input
0 without signal input
Signal output
3 auxiliary change-over contact
Operating voltage
AC 230 V voltage rating AC 230 V
Characteristic curve
B thermal 1.05 - 1.30 I_N;
magnetic 3.2 - 4.8 I_N
C thermal 1.05 - 1.30 I_N;
magnetic 6.4 – 9.6 I_N
Current rating range
4 A (only Characteristic curve C)
6 A
10 A
16 A
B6
B10
B16
C4
C6
31 m/
mm²
19 m/
mm²
12 m/
mm²
24 m/
mm²
17 m/
mm²
Typical electrical operational values
Voltage drop in V at 1 x I_N
I_N (A)
4
6
10
V
0,77
0,53
0,35
C10
10 m/
mm²
C16
6 m/
mm²
16
0,3
Insulation co-ordination
(except signalling)
Rated impulse voltage 4 kV;
overvoltage category III; pollution
degree 2; reinforced insulation in the
actuating area
Insulation co-ordination Rated impulse voltage: 2.5 kV
of the signalling
Note: The Si contacts are not suitable for connection to SELV
control voltage.
Insulation resistance
> 100 MOhm (DC 500 V)
Degree of protection
II
Endurance
mechanical (contacts)
electronic
potentiometer
20,000 cycles
> 15 years within specification
min. 1000 steps
EBU10 - T A 1 - 0 0 3 - AC 230 V - C - 10 A ordering example
Preferred types Characteristic curve C
1638
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