56 / 320
Data is subject to errors and technical modifications.
1.41
Earth Fault Relays
Earth Fault Relays
Characteristics
-
-
Provides monitoring of earth fault currents. When the fault current rises above the selected level, the output contacts of the
product operate.
-
-
Depending on the relay selected, it can have either fixed or adjustable sensitivity. A time delay is also available for selectivity
purposes. The relays are linked with detection torroids, available in circular and rectangular variants.
-
-
Positive safety: the relay trips in the event of a break in the relay/torroid link.
-
-
Positive reset required after a fault is detected.
-
-
Test button for simulation of a fault.
-
-
Protected against nuisance tripping from transients.
-
-
Conforms to BS EN 61008.
Technical Data
-
-
Type A RCD protection.
-
-
Output: 1 C/O contact, 250V a.c. 5/6A AC1.
-
-
Visual display of fault by red LED.
Specific device features of HR525 & HR534
.
-
-
Display of fault current before it triggers the relay (5% to 75%).
-
-
Extra output contact (250V 0.1A max.) to enable remote indication if fault currents over 50% of I Δn .
-
-
Remote test and reset (opto-coupled).
Connection capacity
-
-
Relay - 1.5 to 6mm²
-
-
Relay - torroid link: 2 wires, 25m max.
-
-
Test and remote reset link: 3 wires, 20m max.
-
-
For enclosure selection, please consult us.
Description
Characteristics
Width
Cat ref.
Earth Fault Relay with Separate Detection Torroids
Earth fault relay C/O contact
5A a.c.1
Instant trip, fixed sensitivity
I ∆n = 30mA
1 Mod
HR500
Earth fault relay C/O contact
5A a.c.1
Instant trip, fixed sensitivity
I ∆n = 300mA
1 Mod
HR502
Earth fault relay C/O contact
6A a.c.1
Adjustable sensitivity
I ∆n = 30mA, 100mA, 300mA
500mA, 1A, 3A, 10A
Instant trip or time delay
0.1 - 0.3 - 0.4 - 0.5 - 1 - 3 secs
3 Mod
HR510
Earth fault relay C/O contact
6A a.c.1
Adjustable sensitivity
I ∆n = 30mA, 100mA, 300mA
500mA, 1A, 3A, 10A
LED optical scale
Instant trip or time delay
0.1 - 0.3 - 0.4 - 0.5 - 1 - 3 secs
3 Mod
HR520
Earth fault relay C/O contact
6A a.c.1
Adjustable sensitivity
I ∆n = 30mA, 100mA, 300mA
500mA, 1A, 3A, 10A
LED optical scale
Instant trip or time delay
0.1 - 0.2 - 0.25 - 0.3 - 0.4 - 0.5 secs
3 Mod
HR522
Earth fault relay C/O contact
6A a.c.1
Adjustable sensitivity
I ∆n = 500mA, 1A, 3A, 5A,
10A, 20A & 30A
LED optical scale
Instant trip or time delay
0.1 - 0.2 - 0.25 - 0.3 - 0.4 - 0.5 secs
3 Mod
HR523
Earth fault relay C/O contact
6A a.c.1
Trip / reclose input feature
Adjustable sensitivity
I ∆n = 30mA, 100mA, 300mA,
500mA, 1A, 3A, 5A, 10A & 30A
LCD Display
Instant trip or time delay
0.02 - 0.1 - 0.3 - 0.4 - 0.5 - 1 - 3 - 5 - 10
secs
3 Mod
HR525
Earth fault relay C/O contact
6A a.c.1
Solid State relay output
Trip / reclose input feature
Adjustable sensitivity
I ∆n = 30mA, 100mA, 300mA,
500mA, 1A, 3A, 5A, 10A & 30A
LCD Display
Instant trip or time delay
0.02 - 0.1 - 0.3 - 0.4 - 0.5 - 1 - 3 - 5 - 10
secs
3 Mod
HR534
Earth Fault Relay with Integral Torroids
Earth fault relay with integral
torroid adjustable sensitivity
25mm² max. cable size
Adjustable sensitivity
I ∆n - 30mA, 100mA, 300mA,
500mA, 1A & 3A
Instant trip or time delay
0.1 - 0.3 - 0.5 - 0.75 - 1 secs
4 Mod
HR440
Earth fault relay with integral
torroid adjustable sensitivity
35mm² max. cable size
Adjustable sensitivity
I ∆n - 30mA, 100mA, 300mA,
500mA, 1A & 3A
Instant trip or time delay
0.1 - 0.3 - 0.5 - 0.75 - 1 secs
6 Mod
HR441
Earth Fault Relays
HR500
HR510
HR520
HR440
HR441
Commercial
Distribution