The Martindale Elite Fuse Finder receiver FD550 enhances fuse and breaker detection with microprocessor controlled multi-level sensitivity. For even faster identification, a six-segment bargraph provides a progressive indicator of signal strength. The Elite receiver also has a non-contact voltage detector and has two modes of operation: Automatic, which can automatically change sensitivity and has a memory for perfect recognition. Fuse finding with the bargraph is facilitated by the manual mode.
- Transmitter
Rated voltage: 230V
Range of frequencies: 30-70Hz
Frequency of switch: around 5 Hz
The approximate transmission pulse width is 1.7 μS.
Maximum pulse amptitude for transmission: 20A
-10°C to 40°C with a maximum relative humidity of 60%
Measurements: approximately 65 x 65 x 46 mm
- weight: 65 g
Earth Leakage: None
Energy source: the mains
Power usage: around 1 watt
Category of overvoltage: Cat III/300V
Degree of pollution: 2
- IP20 protection class
Receiver
Approximate tracing depth for fuse assignment: 0 to 10 cm, contingent on local circumstances.
Setting the sensitivity with an on/off potentiometer
-10°C to 40°C with a maximum relative humidity of 60%
Measurements: 202 by 32 by 22 mm.
Weight: 150g (battery not included).
IP20 is the protection class.
Power source: MN1604/PP3, IEC 6LA61 (alkaline only), 9V battery
Voltage Indicator
Range of voltage: 40 to 600 V
The indicator distance of sensitivity from a flat PVC An earth cable and a 1 mm2 twin dangling in free space. 3mm at 50Hz and 110V AC. 23 mm at 50Hz and 240V AC.
Range of frequencies: 50 Hz – 50 kHz
Indication: When there is an AC voltage, there is a red LED and an audible tone (2 kHz). A green LED shows the state of the internal battery.
Range of operation: -5° to 40°C
It is not advised to use this on circuits with high energy.
The units meet EMC regulations.
Neither the transmitter nor the receiver have any user-serviceable components.
- No key features available.
