Related Manuals for Cybertronix Sentinel EFI-BFZ
Summary of Contents for Cybertronix Sentinel EFI-BFZ
- Page 1 Sentinel™ EFI-BFZ EARTH FAULT INDICATOR USER’S MANUAL Tel: +27 87 379 5220 Email: info@cybertronix.co.za Ver. 3.2 3 Glenart Road, Kloof 3610, South Africa www.cybertronix.co.za...
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Page 2: Table Of Contents
Sentinel™ EFI-BFZ User’s Manual CONTENTS 1. safety notice ............................. 3 2. overview ............................4 3. FEATURES ............................4 4. INSTALLATION ..........................4 4.1 CURRENT SENSOR ........................4 4.1.1 Multi-core cable system ...................... 5 4.1.2 single-core cable system ..................... 7 4.2 INDICATING UNIT ........................7 4.3 Remote INDICATOR ........................ -
Page 3: Safety Notice
Sentinel™ EFI-BFZ User’s Manual 1. SAFETY NOTICE Review the following safety precautions to avoid serious injury or death and to prevent damage to this product or any products connected to it. To avoid potential hazards, use this product only as specified. -
Page 4: Overview
Sentinel™ EFI-BFZ User’s Manual 2. OVERVIEW The Sentinel™ EFI-BFZ-50 is one of a family of Earth Fault Indicator (EFI) products that is designed to assist in the rapid location and isolation of earth faults on high voltage cable networks. The EFI can be used in radial networks or in openly operated ringed networks. -
Page 5: Multi-Core Cable System
Sentinel™ EFI-BFZ User’s Manual 4.1.1 MULTI-CORE CABLE SYSTEM The Sentinel™ EFI ships with a standard sized (CT100) current sensor, which is suitable for most multi-core cable systems. A larger current sensor (CT150) is also available but must be specified at time of order. - Page 6 Sentinel™ EFI-BFZ User’s Manual FIGURE 1: CURRENT SENSOR MOUNTED ON MULTI-CORE CABLE SYSTEM TERMINATION L1 L2 L3 SCREEN CURRENT SENSOR CURRENT SENSOR OUTGOING CABLE EARTH EQUIVALENT CIRCUIT FIGURE 2: CURRENT SENSOR MOUNTED ON SINGLE-CORE CABLE SYSTEM TERMINATION L1 L2 L3 SCREEN CURRENT SENSOR...
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Page 7: Single-Core Cable System
Sentinel™ EFI-BFZ User’s Manual 4.1.2 SINGLE-CORE CABLE SYSTEM A larger current sensor (CT300) is available for application on single core cable systems. These systems usually consist of three single-core cables spaced in a row, side-by-side. The flexible sensor core is wrapped tightly around all three cables forming a rectangular oval, and fastened in place with cable-ties. -
Page 8: Remote Indicator
Sentinel™ EFI-BFZ User’s Manual REMOTE INDICATOR A remote indicator can be ordered separately or ordered pre-installed. The remote indicator is designed to be mounted through a hole in the switchgear enclosure so that it is visible from the outside. FIGURE 4: REMOTE INDICATOR 50mm Ø... -
Page 9: Auxiliary Relay (Optional)
Sentinel™ EFI-BFZ User’s Manual The indicating unit continuously monitors the output signal from the current sensor. The current sensor transmits a voltage which is proportional to the measured current. For primary currents in excess of 50A the current sensor saturates and a limiting circuit inside the indicating unit clamps the output voltage to below 10V even for high fault currents. -
Page 10: Testing
Sentinel™ EFI-BFZ User’s Manual Complete battery technical details are provided below. Battery type: 3.6V Lithium, size ½AA Specification: Model TL-2150/S or similar International size refs: ½AA, 1/2R6, 1/2UM-3 Capacity: 850 mAH Open circuit voltage: 3.7 V Quiescent drain current: <5 µA Flashing drain current: <0.8 mA Minimum operation life:... -
Page 11: Specifications
Sentinel™ EFI-BFZ User’s Manual 7. SPECIFICATIONS Network voltage range: 1-36kV Trip current: 50A ±10A Minimum fault duration: 2.5 cycles (50ms @ 50Hz / 40ms @ 60Hz) Fault current withstand: 25kA for 1s Primary indication: LED, flash rate 1Hz nominal Timer reset: 4 or 8 hours selectable Manual test: Magnetic swipe alternately initiates trip and reset... - Page 12 Sentinel™ EFI-BFZ User’s Manual Battery -type: 3.6 V, ½AA, lithium battery -capacity: 0.85AH -quiescent current: <5 µA -flashing current: <0.8 mA -shelf life: >10 years -flashing life: >1000 flashing hours (>500 hours with remote indicator) Version 3.2 Page 12 of 15...
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Page 13: Ordering
Sentinel™ EFI-BFZ User’s Manual 8. ORDERING Table 1 below shows the codes to be used for product ordering. Only the first three code groups need to be specified for the standard versions of the product. The standard versions ships without the items from groups 4, 5 and 6, and with a standard size current transformer (CT100 with 3m lead). - Page 14 Sentinel™ EFI-BFZ User’s Manual For Example: ORDERING CODE DESCRIPTION EFI-BFZ-50 (standard version) - Battery powered - LED indication - 50A trip - CT diameter 100mm, 3m lead EFI-BFZ-50-M5-R7-A2-CT150-C3 - Battery powered - LED indication - 50A trip - Mains cable, 5m lead - Remote indicator, 7m lead - Auxiliary relay, 2m lead - CT diameter 150mm, 3m lead...
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Page 15: Warranty
In the event of the above limitation not applying to the user, then in no case shall the Cybertronix cc liability exceed the original purchase price of the product.
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