
Electrical Safety for Power Supplies
The press release discusses the importance of reliable insulation monitoring in mixed IT networks to prevent accidents and damages caused by undetected insulation faults in non-earthed networks. It highlights the normative requirement for monitoring IT networks using insulation monitors.
Product Overview: Insulation Monitor LK 5896
The LK 5896 from the VARIMETER IMD series by DOLD is designed for modern power supply systems, which often include components like inverters, rectifiers, and thyristor controllers. These systems may have high discharge capacities against earth due to EMC interference suppression measures. The LK 5896 is suitable for network discharge capacities up to 3000 µF and voltages up to DC 1500 V and AC 1100 V.
Features and Adjustments
The insulation monitor includes an adjustable alarm threshold and a prewarning threshold. Adjustments are made using a screwdriver on rotary switches. An LED chain and an analogue output provide constant updates on the current insulation resistance. The device operates without ballasting and ensures reliable monitoring even when the network is without voltage.
Additional Capabilities
The LK 5896 features selective earth fault detection to L+ and L- for quick fault localization. It also includes an additional measurement circuit for simultaneous monitoring of an AC network that is galvanically isolated from the main measurement circuit.
Applications and Benefits
The insulation monitor enhances system availability and offers preventive fire and system protection. It is used in various applications such as UPS systems, photovoltaic systems, and hybrid and battery-powered vehicles.
PRESSE - INFORMATION PRESS RELEASE COMMUNIQUE DE PRESSE Unsere Erfahrung. Ihre Sicherheit. Reliable insulation monitoring in mixed IT networks Undetected insulation faults in non-earthed networks may lead to accidents with considerable personal injuries and property damages. Monitoring of IT networks by insulation monitors is therefore normatively mandated. The insulation monitor LK 5896 from the VARIMETER IMD series by DOLD was developed especially for use in modern power supply systems. These often include inverters, rectifiers, thyristor controllers and directly connected direct current components. Because of EMC interference suppression measures, high discharge capacities against earth are often present in these systems. The LK 5896 meets these requirements. It is suitable for network discharge capacities up to 3000 pF as well as for voltages up to DC 1500 V and AC 1100 V. In addition to an adjustable alarm threshold, the insulation monitor features an adjustable prewarning threshold. The device is simply adjusted with a screwdriver on rotary switches. An LED chain as well as an analogue output constantly informs about the current insulation resistance. The insulation monitor does not require any ballasting and guarantees reliable monitoring even if the network is without voltage. A selective earth fault detection to L+ and L-enables quick fault localisation. An additional measurement circuit allows simultaneous monitoring of an AC network which is galvanically isolated from the main measurement circuit. The LK 5896 increases the availability of systems and provides preventive fire and system protection. The insulation monitor is employed, for example, in UPS systems, photovoltaic systems, hybrid and battery-powered vehicles, etc. 1696 Zeichen (inkl. Leerzeichen) Kontaktadresse zur Veroffentlichung Please contact before publication Nous contacter avant publication, s.v.p. Postfach 1251 Email: [email protected] Contact: Dipl. Ing. Sigmund Plachetka Beleg erbeten - Voucher copy requested - Copie solicitee
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