Sonel N-1 Transmitting Clamp User Manual

Sonel N-1 Transmitting Clamp

Specifications

• Model: CGI NADAWCZE N-1
• Version: 2.02
• Date: 18.10.2023
• Max Current:
  • I ≤ 1000 A
  • 1000 A < I ≤ 1200 A
• Operating Mode:
  • Continuous mode: 15 minutes measurement, then 30 minutes break

Product Information

The CGI N-1 is designed for generating measuring current in the tested object. It is used in cable location and grounding measurements using the two-wire method. When paired with measuring CGIs, it eliminates the need for using auxiliary probes driven into the ground, and during location, it allows cable identification without galvanic connection.

Usage Instructions

1. Maintenance: The slot (formed from the end faces of the core) should be kept perfectly clean.
2. Cleaning and Maintenance: Dust from the slot should be removed with a soft, dry cloth. Periodically wipe the available iron part of the cloth soaked in oil to prevent corrosion.
3. Disposal: Electrical and electronic equipment should be selectively collected, not mixed with other types of waste.

FAQ

• Q: How often should I clean the CGI N-1?
  A: It is recommended to clean the CGI N-1 regularly, especially after heavy use or exposure to dusty environments.

• Q: Can the CGI N-1 be used for measurements above 1 kHz frequency?
  A: The continuous operation current limit for frequencies above 1 kHz depends on the frequency according to the provided dependency table.

TRANSMITTING CLAMP
N-1
USER MANUAL
Version 2.02 18.10.2023

Description

• N-1 clamp is used to generate the test current in the tested object. It is used in to locate cables and measure earthing systems with the two-clamp method. Together with the current clamp, it eliminates the need to use auxiliary probes driven into the ground, and in case of locating cables, it enables identification of cables without galvanic connection.
• The maximum diameter of the tested conductor is 52 mm. The clamp is powered by a removable two-wire lead, terminated with 4 mm banana plugs. The output signal is transmitted via two banana plugs.

Safety

NOTE!

• Do not expose the clamp to water.
• It is not allowed to use clamps on conductors that conduct currents higher than 1200 A. Limit the working time for currents over 1000 A ac-cording to the following data.

Overloads

by 30- minute break

Operation

• To induce a current in a conductor, open the clamp slightly by turning the clasp, clamp it on the conductor with flowing current and roughly center the conductor relative to the clamp loop. Then close the clamps and make sure that both jaws fit tightly together.
• The gap (formed by the faces of the core) should be kept perfectly clean.

Cleaning and maintenance

NOTE!

• Apply only maintenance methods specified by the manufacturer in this manual.
• Before cleaning, disconnect the clamp from the tested circuit and the meter. Do not spray the clamps with water.
• Remove the dust from the gap with a soft and dry cloth. Periodically wipe the accessible iron part of the jaws with an oil-soaked cloth to prevent possible corrosion.
• The clamp may be cleaned with a soft, damp cloth using all-purpose detergents. Do not use any solvents.

Dismantling and utilisation

• Worn-out electric and electronic equipment should be gathered selectively, i.e. it must not be placed with waste of another kind.
• Worn-out electric equipment should be sent to a collection point in accordance with the law of waste electrical and electronic equipment.
• Before the equipment is sent to a collection point, do not dismantle any elements.
• Observe the local regulations concerning disposal of packages.

Reference conditions

• temperature ………………………………………+20°C …+26°C
• relative humidity …………………………………………. 20…75%
• conductor …………………………………….. centred in the jaws
• current constant component ………………………………. none
• permanent magnetic field …. <40 A/m (Earth’s magnetic field)
• variable, external magnetic field …………………………. none
• conductors in the immediate vicinity …….. no current flow

Technical data

Basic technical data

• nominal current ………………………………………… 1000 A AC
• output for maximum current ……………………………. 1 A AC
• frequency range …………………………………….30 Hz…5 kHz

When using the clamp with a SONEL meter, total measurement accuracy of the measuring system of the meter and clamp is specified in the manual of a given meter.
The accuracy of the clamp given in this manual is not the sum of the accuracy of the meter and accuracy of the clamp.

Other technical data

• insulation type acc. to IEC 61010-1 ………………….. double

• measurement category acc. to IEC 61010-1 …… III 600 V

• ingress protection acc. to IEC 60529

  • closed jaws ……………………………………………………. IP40
  • open jaws ………………………………………………………. IP30

• flammability classification acc. to UL 94 ………………… V0

• dimensions …………………………………. 216 × 111 × 45 mm

• weight ……………………………………………………….. ca. 550 g
  jaws opening distance …………………………………….. 53 mm

• height of open jaws ……………………………………….139 mm

• maximum diameter of tested cable ………………..  Ø 52 mm

• operating temperature …………………………. -10ºC…+55ºC

• relative humidity ……………………………………………… <90%

•  altitude a.s.l. ………………………………………………. ≤2000 m

• the product meets the EMC requirements according to … ………………. IEC 61000-6-3, IEC 61000-6-2, IEC 61326-1

Manufacturer

• The manufacturer, which also provides guarantee and post-guarantee services: SONEL S.A. Wokulskiego 11 58-100 Świdnica Poland
• tel. +48 74 884 10 53 (Customer Service)
• e-mail: customerservice@sonel.com
• web page: www.sonel.com
• Manufactured in France for SONEL S.A.

References

• sonel.com/
• sonel.pl
• sonel.pl/

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