EDS44x_D00201_07_M_XXDE/06.2020
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Safety instructions
2. Safety instructions
2.1 General safety instructions
Part of the device documentation in addition to this manual is the enclosed "Safety in-
structions for Bender products".
2.2 Work activities on electrical installations
If the device is used outside the Federal Republic of Germany, the applicable local stand-
ards and regulations must be complied with. The European standard EN 50110 can be
used as a guide.
2.3 Device-specific safety information
Only qualified personnel are permitted to carry out the work necessary
to install, commission and run a device or system.
DANGER
Risk of electrocution due to electric shock!
Touching live parts of the system carries the risk of:
• An electric shock
• Damage to the electrical installation
• Destruction of the device
Before installing and connecting the device, make sure that the in-
stallation has been de-energised. Observe the rules for working on elec-
trical installations.
WARNING
Make sure that the basic settings meet the requirements of the IT system.
Children and the public must not have access to and contact with the
EDS44x.
CAUTION
Make sure that the operating voltage is correct!
Prior to insulation and voltage tests, the EDS44x must be disconnected from
the IT system for the duration of the test. In order to check the correct con-
nection of the device, a function test has to be carried out before starting
the system.
The EDS440-x and EDS441-x are built in accordance with state-of-the-art technology and
the recognised safety regulations. 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 the EDS44x or
other property.
Use the EDS44x only:
• As intended
• In perfect working order
Immediately rectify any faults that may endanger safety. Do not make any unauthorised
changes and only purchase spare parts and optional accessories recommended by the
manufacturer of the devices. Failure to observe this requirement can result in fire, electric
shock and injury.
Unauthorised persons must not have access to or contact with the EDS44x.
Reference signs must always be clearly legible. Replace damaged or illegible signs imme-
diately.
2.4 Intended use
EDS44x insulation fault locators are used to locate insulation faults in unearthed DC, AC
and three-phase power supply systems (IT systems). Depending on the locating current
injector, AC and three-phase systems can be monitored within the range from AC 42 to
1000 V; DC systems, within the range from DC 24 to 1500 V. An AC residual current can be
indicated in the range 42 Hz…1 kHz, 100 mA…20 A (EDS440) or 42 Hz…60 Hz,
100mA…2A (EDS441).
Devices of the EDS44x series comply with the product standard IEC 61557-9.
An EDS system (insulation fault location system) consists of an EDS44x insulation fault lo-
cator and a locating current injector. EDS44x insulation fault locators detect locating cur-
rent signals generated by the locating current injector via measuring current
transformers and evaluate them accordingly.
CAUTION
Risk of malfunctions due to excessive locating current on sensitive
system parts!
An excessive locating current flowing between the IT system and earth
may cause controller faults in sensitive system parts, such as PLC or relays.
Ensure that the level of the locating current is compatible with the system
to be monitored.
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