Bender RC48N-70-10 A, RC48N-70-50 A Operating Manual

Operating Manual

Power in electrical safety

RC48N-70-10 A
RC48N-70-50 A

Ground-fault and neutral-grounding

monitoring system

TGH1397en/11.2006

Dipl.-Ing. W. Bender GmbH & Co.KG
Londorfer Str. 65 • 35305 Grünberg • Germany
Postfach 1161 • 35301 Grünberg • Germany

Tel.: [phone]
Fax: [phone]

E-mail: [e-mail]
Web server: http://www.bender-de.com

© Dipl.-Ing. W. Bender GmbH & Co.KG

All rights reserved.

Reprinting only with permission

of the publisher.

Subject to change!

Table of Contents

1. How to get the most out of this manual ............................................................. 5

1.1 How to use this manual ......................................................................................................... 5

1.2 Explanations of symbols and notes ................................................................................... 5

2. Safety instructions .................................................................................................. 7

2.1 Intended use .............................................................................................................................. 7

2.2 Qualified personnel ................................................................................................................. 7

2.3 General safety instruction ..................................................................................................... 7

2.4 Warranty and liability ............................................................................................................. 8

2.5 Guarantee ................................................................................................................................... 8

3. System description ................................................................................................. 9

3.1 Features ....................................................................................................................................... 9

3.1.1 Areas of application ................................................................................................................ 9

3.1.2 Description of function .......................................................................................................... 9

3.1.3 Mechanical design ................................................................................................................ 10

4. Installation and connection ............................................................................... 11

4.1 Installation ............................................................................................................................... 11

4.2 Connection .............................................................................................................................. 12

4.2.1 Connection diagram RC48N-70-10A .............................................................................. 12

4.2.2 Connection diagram RC48N-70-50A .............................................................................. 14

5. Operation and configuration ............................................................................. 17

5.1 Operating elements RC48N-70-10A ............................................................................... 17

5.2 Operating elements RC48N-70-50A ............................................................................... 18

5.3 Setting the alarm relay operating mode ...................................................................... 19

5.4 Factory settings ..................................................................................................................... 19

6. Data ......................................................................................................................... 21

6.1 Technical data ........................................................................................................................ 21

6.2 Applied standards ................................................................................................................. 22

6.3 Ordering details ..................................................................................................................... 22

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Table of Contents

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TGH1397en/11.2006

1. How to get the most out of this manual

1.1 How to use this manual

This operating manual describes how to operate the RC48N-70… ground-fault and neutral­grounding monitoring system, which is designed for use with high-resistance earthed instal­lations. It is designed for skilled personnel working in the field of electrical engineering and
in particular for those designing, installing and operating electrical equipment.

Please read this operating manual and the enclosed sheet entitled "Important safety instruc­tions for BENDER products" before using the equipment. This document must be kept in an
easily accessible location near to the equipment.

Should you have any questions, please do not hesitate to contact us. Please contact our Tech­nical Sales Department. We are also happy to provide on-site service. Please contact our Serv­ice Department for more information.

Service hotline: 0700-BenderHelp (telephone and fax)
Carl-Benz-Straße 10 • 35305 Grünberg • Germany
Tel.: [phone],760 • Fax: [phone]
E-mail: [e-mail] • www.bender-de.com

Although great care has been taken in the drafting of this operating manual, it may never­theless contain errors and mistakes. The BENDER Group cannot accept any liability for injury
to persons or damage to property resulting from errors or mistakes in this operating manual.

1.2 Explanations of symbols and notes

The following terms and symbols are used to denote hazards and instructions in
BENDER documentation:

This symbol indicates an immediate risk to life and limb.
Failure to observe the associated instructions and take appropriate precautions
will result in death, serious physical injury or substantial damage to property.

Danger !

This symbol indicates a potential risk to life and limb.
Failure to observe the associated instructions and take appropriate precautions
may result in death, serious physical injury or substantial damage to property.

Warning

This symbol indicates a potentially dangerous situation.
Failure to observe the associated instructions and take appropriate precautions
may result in minor physical injury or damage to property.

Caution

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How to get the most out of this manual

This symbol indicates important information about the correct use of the equip­ment purchased.
Failure to observe the associated instructions can result in equipment malfunc­tioning or cause problems in the environment in which it is being used.

This symbol indicates tips for using the equipment and particularly useful infor­mation. This type of information will help you to optimise your use of the equip­ment.

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TGH1397en/11.2006

2. Safety instructions

2.1 Intended use

The RC48N-70... ground-fault and neutral-grounding monitoring system is solely intended for
use with high-resistance earthed installations, where it is used to monitor the following:

● Residual current in the protective earth conductor

● Voltage between the transformer neutral and earth

● Neutral earthing resistor continuity (NER).

Please note the limits of the area of application indicated in the technical data. Use
deviating from or beyond the scope of this is considered non-compliant.

In order to comply with intended use, all instructions in this manual must be observed.

2.2 Qualified personnel

Only appropriately qualified personnel may work on BENDER products. Qualified
means personnel who are familiar with the assembly, first use and operation of the equip­ment and have undergone appropriate training. Such personnel must have read this manual
and understood all instructions relating to safety.

2.3 General safety instruction

BENDER equipment is designed and built in accordance with the state of the art and accept­ed rules in respect of technical safety. However, the use of such devices may introduce risks
to the life and limb of the user or third parties and/or result in damage to BENDER equip­ment or other property.

● Only use BENDER equipment:

–As intended

– If in perfect working order

– In accordance with the accident prevention regulations and guidelines applicable in the

location of use

● Rectify any faults that may endanger safety immediately.

● Do not make any unauthorised changes and only use replacement parts and optional accesso-

ries purchased from or recommended by the manufacturer of the equipment. Failure to
observe this requirement can result in fire, electric shock and injury.

● Reference plates must always be clearly legible. Replace damaged or illegible plates immedi-

ately.

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Safety instructions

2.4 Warranty and liability

In the event of physical injury or damage to property, no claims in respect of warranty or
liability can be accepted if such injury or damage can be attributed to one or more of the
following causes:

● Non-compliant use

● Incorrect assembly, commissioning, operation and maintenance.

● Operation of equipment with faulty safety devices or safety and protection devices which have

been fitted incorrectly or are not in perfect working order.

● Non-observance of instructions in this operating manual and the supplement entitled "Impor-

tant safety instructions for BENDER products" in respect of transport, storage, installation, com­missioning, operation and maintenance.

● Constructional changes made by parties other than the manufacturer.

● Non-observance of technical data.

● Repairs carried out incorrectly and the use of replacement parts or accessories not approved by

the manufacturer.

● Catastrophes

● Uncontrollable external factors and force majeure.

2.5 Guarantee

BENDER provides a guarantee of error-free design and perfect material quality lasting 24
months from date of delivery for equipment stored or operated under standard conditions.

The guarantee does not cover maintenance work of any type. It is only valid for the first buy­er and does not cover products or individual components used other than as intended or to
which changes have been made. Using the equipment other than as intended or under ab­normal operating conditions will render any guarantee null and void.

The guarantee obligation is restricted to repairing or replacing equipment returned to BEND­ER within the guarantee period. In order for claims made under the terms of the guarantee
to be accepted, BENDER must acknowledge that the product is faulty and that the fault con­cerned cannot be attributed to the incorrect handling or modification of equipment, non­compliant use or abnormal operating conditions.

Any guarantee will be rendered null and void if repairs or cha nges have been made to equip­ment by persons other than those authorised to do so by BENDER. These guarantee provi­sions are valid exclusively and supersede all other contractual or legal warranty obligations,
including, but not restricted to, the legal warranty in respect of marketability, fitness for pur­pose and serviceability for a specific application. BENDER does not accept any liability for
direct and indirect collateral or consequential damage, regardless of whether this can be at­tributed to action considered permissible, impermissible or otherwise.

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TGH1397en/11.2006