CONTROLLER AND METER EARTH CONTINUITY CATOHM

the presence of voltage and the supply network
- The position of the phase,
- The grounding of the protective conductor, with the main functions:
- Measuring the value of earth resistance of an installation,
- Control of the bonding metal.
The 4-digit LCD screen shows the values ​​of earth resistance from:
- 0 to 99 Ω, digits blue (<100 at="" the="" threshold="" recommended="" by="" nf="" c="" 15-100="" br=""> -100 To 1999 Ω, red digits
Comes complete with probe cord extension 7 m and instructions for use, without case.
Control of metal bonding with the probe extension cord safety of 7 m.

DESIGNED ACCORDING TO EN 61557-4
ACCORDING TO THE REQUIREMENTS OF NF C15-100
Meter and controller used on the socket 2P + T 10/16 A or LV electrical circuits single phase 230 V between phase and neutral. The measurement of earth resistance, conducted by this unit, based on the measurement principle known as "fault loop.
CATOHMTM the DT-300 can control by on-screen display
LCD:
- The presence of voltage and the supply network
- The position of the phase,
- Connection tothe earth's protective conductor, with the main functions:
- Measuring the value of earth resistance,
- Control of the bonding metal.
Presence of tension and network compliance
The control voltage present "230 V, is indicated by a blue display indicator 230 V (Fig. 1) on the LCD.
Non-compliance of the network as a connection between phases or 400 V is marked with red display of the LCD and specific indications (Fig. 2).
Phase position
The phase is shown automatically, right or left, identified by the symbol of taking on the LCD display
Earthing
Control of the grounding conductor protection is done by specifying the symbol of
making displayed on the LCD. Red display with a specific indication in the absence of land.
Measurement of earth resistance
Once connected to a system connected correctly (this earth, 230 V, phase to the right or left) displaying the value of the land CATOHMTM DT-300 is done instantly at the top of the LCD screen to 4 Digits
may indicate values ​​of earth resistance from:
- 0 to 99 Ω, digits blue (Fig. 1)
(<100 at="" the="" threshold="" recommended="" by="" nf="" c="" 15-100="" br=""> -100 To1999 Ω, red digits (Fig. 3)
The measurement is done with an accuracy of + / - (3% + 1 digit) on pure strength, range 000-200 ohms at 23 ° C + / - 5 ° C.
Check continuity
An extension cord to 7 m long, housed in a reel, is connected to the controller. The probe used to check bonding metallic sound.
A 0.80 m boom attachment facilitates contact remotely (ceiling ...).
The complete equipment consists of:
- Controller (180 x 105 x 50 mm)
- Extension of the reel (dimensions: Ø 105 x 62 mm).
Features
Operating voltage: 230 V -10 / +6% - TT.
Frequency: 50/60 Hz
Operating temperature: - 15 ° C + 45 ° C.
Storage temperature: - 25 ° C + 70 ° C.
Class II.
Continuity resistance taken into account: 2 Ohms.
Installation Category III.