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Catalogs
BENDER GmbH & Co KG
WR70x175S(P)…WR200x500S(P)

WR70x175S(P)…WR200x500S(P)

Product catalog summary

Product Description
The WR...S series measuring current transformers are designed to convert AC currents into measurable signals, compatible with RCM and RCMS series residual current monitors and evaluators. They are also suitable for use with insulation fault location systems (EDS) in IT systems. The WR...SP series includes integrated screening to prevent false tripping in high load or inrush current scenarios, making them ideal for busbar systems with load currents ≥ 500 A.

Device Features

Compatible with RCMS460/490 and RCM420 residual current monitoring systems.
Suitable for EDS470, EDS460/490, and EDS440 insulation fault locators in AC and DC systems.
Designed for load currents ≥ 500 A.

Ordering Information
Various models are available with different internal dimensions and screening options. For example, WR70x175S without screening and WR70x175SP with integrated screening.

Standards and Approvals
The transformers comply with DIN EN 60044-1 and IEC 61869 standards. The EU Declaration of Conformity is accessible via a QR code.

Technical Data

Insulation coordination according to IEC 61869-2 with a highest system voltage of AC 720 V.
Rated transformation ratio of 600/1 and a rated burden of 180 Ω.
Accuracy class 5 with a rated continuous thermal current of 100 A.
Environmental resistance includes shock, bumping, and vibration resistance as per IEC standards.
Operating temperature range from -10 to +50 °C.

Connection and Installation

Connection via screw-type terminals with specific conductor size requirements.
Installation instructions emphasize correct lead direction and avoiding passing PE conductors through the transformer.
Mounting can be in any position with a degree of protection IP40 for internal components.

Dimensions and Weights
Detailed dimensions and weights are provided for each model, such as WR70x175S(P) with dimensions 70 x 175 mm and weight 2200 g.

Catalog excerpts

Measuring current transformers

Open the catalog to page 1

Measuring current transformers WR70x!75S(P) Measuring current transformers The highly sensitive WR...S series measuring current transformers of rectangular type convert AC currents into evaluable measurement signals, in combination with RCM and RCMS series residual current monitors and evaluators. In addition, the measuring current transformers can be used in combination with insulation fault location systems (EDS) for IT systems. They are designed to measure the locating current generated by a PGH locating current injector or an ISOMETER® IRDH. In combination with EDS series insulation fault...

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Measuring current transformers WR70x175S(P)...WR200x500S(P)

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Technical data Installation instructions • D o not pass shielded cables through the measuring current transformer. Highest system voltage for electrical equipment Um Rated impulse withstand voltage Uisol Measuring circuit Rated transformation ratio Rated burden Rated primary current Rated primary current Nominal power Rated frequency Internal resistance Secondary overvoltage protection Accuracy class Rated continuous thermal current Rated short-time thermal current Rated surge current • As a general principle, the PE conductor and low-resistance conductor loops must not be passed through the...

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WR70x175S(P)…WR200x500S(P)

WR70x175S(P)…WR200x500S(P)

Catalog excerpts

All BENDER GmbH & Co KG catalogs and technical brochures