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Sentinel™ EFI-MLZ Installation Guide
POWER UP and MANUAL TEST
NOTE: When the unit is first powered up from the mains supply, a period of up to 20 minutes is required to charge the on-board backup power
supply before the unit can become operational. This charge period is reduced if the backup supply is already partly charged and will also vary
depending on the level of mains supply voltage used.
Following installation it is important that the unit is tested with the Manual test facility provided.
The test sequence below should be followed.
1)
Ensure that the unit is powered up for a period of up to 20 minutes.
2)
Press the "Test / Reset" pushbutton on the front of the unit for a minimum of 3 seconds.
The LED indicator in the control unit will commence flashing at approximately 1Hz.
The auxiliary relay will latch in the closed position.
The remote indicator (if installed) will also flash at approximately 1Hz.
This test state will continue for a period of 60 seconds or until mains is present for 10 seconds or until the test pushbutton is pressed
again to terminate the manual test.
SAFETY
!
WARNING: Under certain fault conditions, high voltages can be conducted into the earth fault indicator enclosure through the
CT, remote indicator, or the auxiliary relay cables. All parts within the enclosure should be handled as if carrying dangerous voltages.
WARNING: Use extreme caution during the installation and use of the earth fault indicator as high voltages and currents may
be present in the circuit.
•
Ensure that the current sensor is installed at earth potential on the HV cable system.
Ensure that the current sensor is installed on the screened part of the cable system.
•
•
Use caution during the installation and use of this product; high voltages and currents may be present in the circuit.
•
This product must be used only by qualified personnel practicing applicable safety precautions.
•
Wear protective clothing and gloves as required.
•
Do not install this product on live conductors.
•
Always de-energize circuit before installing the current sensor and indicating unit.
•
Always inspect the current sensor, indicating unit and all leads for damage before using the product.
Do not use the product if damaged.
•
Technical Data
Network voltage range:
Rated mains voltage:
Over voltage withstand:
Impulse voltage withstand:
Trip current:
Minimum fault duration:
LED indicator flash rate:
LED indicator flash duration:
Fault current withstand:
Supply charging time:
Operating temp range:
Operating humidity range:
Reset of fault:
1-36kV AC
110V-240V AC ±20% 50/60Hz
600V for 48 hours
10kV, 1.2/50uS waveform
50A ±20%
2.5 cycles (50ms@50Hz)
1Hz
12 hours nominal
25kA for 1second
10-20 minutes
-20ºC to 70ºC
0-100% RH
10s of healthy mains or manual
reset pushbutton
Tel: +27 87 379 5220 Email:
3 Glenart Road, Kloof 3610, South Africa
Auxiliary Relay
Number of contacts:
1
Type:
Latching, N/O on reset
Rating:
Max voltage: 220VDC, 250VAC
Maximum switching:
60W
Maximum current
2A
Remote Indicator (optional)
Type:
High intensity red LED
Flash rate:
1Hz
Flash duration
6 hours nominal
Lead type:
2-core, 0.5mm², double insulated
Mounting:
M10 panel hole
info@cybertronix.co.za
www.cybertronix.co.za
Ver. 3.2
(Ver. 3.2)
Page 2/2
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