Precision Technical Specifications

• Model: LQPGL 0.38kV/657.9A

• Phase Configuration: Single-phase

• Rated Frequency: 50Hz

• Rated Voltage: 0.38kV (380V AC)

• Rated Current: 657.9A (precision-rated)

• Control Voltage: AC220V (switching operations)

• Protection Rating: IP20 (finger-safe design)

• Mechanical Endurance: 20,000 operations

• Insulation System: Equipped with knife-switch disconnector

• Installation: Indoor use only

• Dimensions: 800×650×1800mm (L×W×H)

• Weight: <300kg

• Enclosure: Electromagnetic shielded construction

Advanced Functional Capabilities

• Electrical Isolation: Insulated knife-switch for physical circuit separation

• Remote Operation: Switch-on/off via 220V control signals

• Protection Systems:

• Over-voltage protection

• Over-current protection

• Precision Monitoring: Real-time measurement and indication

Component Architecture

• Measurement System:

• Current transformers (CTs)

• Voltage transformers (VTs)

• Switching & Protection:

• AC contactors

• Grounding switches

• Insulated knife-switch disconnector

• Control Relays:

• Current relays

• Voltage relays

• Intermediate (auxiliary) relays

• Operator Interface:

• Control buttons

• Status indicator lamps

Design Innovations

• Precision Current Handling: 657.9A rating for specialized applications

• Space Optimization: Compact 800×650mm footprint with 1800mm height

• Shielded Enclosure: EMI/RFI protection for sensitive environments

• Lightweight Construction: <300kg weight for easier installation

• IP20 Protection: Safe finger access prevention

Industrial Applications

• Precision manufacturing power distribution

• Laboratory testing equipment power control

• Medical equipment power management

• Telecommunications power systems

• Research facility electrical infrastructure

Installation Specifications

Protection Features

• Over-voltage trip: 115% of rated voltage

• Over-current protection: Instantaneous at 150% In

• Short-circuit withstand: 25kA/1s

• Insulation monitoring: 1kΩ/V sensitivity

• Arc containment design

Maintenance Schedule

1. Monthly:

• Visual inspection of indicators

• Contact condition check

2. Quarterly:

• Relay functional testing

• Knife-switch operation verification

3. Annual:

• Insulation resistance test (min 100MΩ)

• Current transformer calibration

4. 5-Year:

• Full contact resistance measurement

• Dielectric strength validation

Compliance & Certifications

• IEC 61439-1/2: Low-voltage switchgear assemblies

• IEC 60947: Circuit-breakers and switchgear

• IEC 60529: IP degree of protection

• EMC Directive 2014/30/EU

Certified for precision power distribution in controlled indoor environments.