GRL DNH1-160/30LP Fuse Switch Disconnector 1140V AC Use NH0-P fuse link

 Fuse Switch Disconnector DNH1-160/30LP Series Technical Parameters

GRL DNH1-160/30LP Fuse Switch Disconnector: Advanced 1140V Protection for Wind Power Applications

1. Introduction: Engineered for Emerging Energy Demands

The GRL DNH1-160/30LP Fuse Switch Disconnector is a newly designed solution developed specifically to address the evolving market demands of renewable energy sectors, particularly wind power box transformers. Combining a sophisticated aesthetic with a highly compact structure, this device solves space constraints in modern distribution cabinets while delivering robust performance.

As a versatile component, it functions primarily as a line isolation device while simultaneously equipping the circuit with critical overload and short-circuit protection capabilities. The product is designed and manufactured in strict compliance with international standards GB/T 14048.3 and IEC 60947-3, ensuring global applicability and safety compliance.

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2. High-Voltage Performance and Technical Specifications

The DNH1-160/30LP is optimized for high-voltage environments, a common requirement in wind energy generation and transmission.

• Voltage Capabilities: The device features a Rated operating voltage (Ue) of AC 1140V, making it suitable for systems exceeding standard low-voltage limits. To ensure long-term safety and resistance to electrical stress, it boasts a Rated insulation voltage (Ui) of 1500V and a Rated impulse withstand voltage (Uimp) of 12kV, providing exceptional resilience against transient voltage spikes.

• Current and Fuse Integration: The unit is rated for a Frame-rated Operational Current (Ie) of 100A. It is designed to accommodate Fuse size 0 (NH0-P type), supporting a flexible fuse rated operating current range from 2A up to 100A. This allows engineers to precisely tailor the protection level to the specific load requirements.

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3. Robust Protection and Safety

Safety and reliability are at the core of the DNH1-160/30LP design.

• Short-Circuit Breaking Capacity: In the event of a fault, the device offers a high Rated short-circuit current (Iq) of 80kA (when equipped with the appropriate fuse), ensuring that massive fault currents are interrupted safely to prevent equipment damage.

• Ingress Protection: The switch is designed to protect operators from accidental contact. It offers a protection level of IP20 when in the ON position and IP30 when in the OFF position.

• Usage Category: It is classified under the usage category AC-20B, which typically denotes use as an isolator for connecting and disconnecting circuits under no-load or specified conditions.

4. Installation and Accessories

The DNH1-160/30LP is built for ease of integration into varied switchgear layouts.

• Mounting: The device is specified for Fixed installation and must be mounted in a Vertical installation orientation to ensure proper heat dissipation and mechanical operation.

• Connection: Secure connections are vital for high-voltage reliability. The specification mandates a Maximum tightening torque of less than or equal to 12 N.m, ensuring optimal contact pressure without damaging terminals.

• Customization: To meet complex monitoring needs, the system supports accessories that can be ordered separately, including an auxiliary switch for remote status signaling, mechanical fuse monitoring for instant fault detection, and a phase separation plate for enhanced isolation between phases.

DNH1 Fuse Switch Disconnector Wiring method

With its specialized design for 1140V AC systems and 100A capacity, the GRL DNH1-160/30LP is the ideal choice for wind power box transformers and other demanding industrial applications. Its combination of high insulation voltage (1500V), compact form factor, and compliance with IEC/GB standards makes it a premier solution for engineers seeking reliable line isolation and circuit protection.

DNH1 Fuse Switch Disconnector Product Showcase

Q: What is the primary application for the DNH1-160/30LP?

A: This device is specifically designed to meet market demands for wind power box transformers and other renewable energy applications. It serves as a line isolation device that also provides overload and short-circuit protection.

Q: What is the rated operating voltage for this switch?

A: The switch is rated for AC 1140V, making it suitable for high-voltage industrial and wind energy systems that exceed standard 690V limits.

Q: What standards does this product comply with?

A: The DNH1-160/30LP complies with applicable standards GB/T 14048.3 and IEC 60947-3.

Q: What size fuse link does this disconnector accept?

A: It is designed for Fuse size 0 (specifically NH0-P type fuse links).

Q: What is the current range for the fuses used in this device?

A: While the frame-rated operational current is 100A, the device supports fuse rated operating currents ranging from 2A up to 100A. This allows for flexible protection scaling based on your load.

Q: What is the short-circuit breaking capacity?

A: When equipped with the correct fuse, the rated short-circuit current (Iq) is 80kA. This high rating ensures reliable interruption of severe faults.

Q: Can this switch be used to switch motors directly?

A: The usage category is AC-20B. This category generally implies connecting and disconnecting under no-load conditions or switching resistive loads where the load is isolated. It is primarily an isolator, not a motor control switch.

Q: Does the switch support remote monitoring?

A: Yes. You can order separate accessories such as an auxiliary switch (for status signaling) and mechanical fuse monitoring (to detect blown fuses).

Q: Are there options for phase isolation?

A: Yes, a phase separation plate is listed as an item that can be ordered separately to enhance insulation between phases.

Q: What is the rated impulse withstand voltage?

A: The device has a rated impulse withstand voltage (Uimp) of 12kV, providing robust protection against voltage surges and lightning strikes.

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