JT/T 1071-2016 in English

VALID

Technical requirements for variable frequency variable voltage power supply devices for port shore-based power supply

Issued on:2016-10-21
Implemented on:2017-01-01
File Format:PDF
Delivery:Via email within 1~3 business days

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Standard No:	JT/T 1071-2016
Document status:	VALID
Title in English:	Technical requirements for variable frequency variable voltage power supply devices for port shore-based power supply
Title in Chinese:	港口岸基供电变频变压电源装置技术要求
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2016-10-21
Implemented on:	2017-01-01
ICS Classification:	03.220.40-Transport by water
Chinese Classification:	R45-Dedicated port facilities
Professional Classification:	JT-Transport
Related Keywords:	variable voltage power supply devices standard technical requirements standard voltage power supply devices shore-based power supply technical requirements

Introduction

Interpretation of the core content of the standard

Technical Requirements Standard for Variable Frequency and Voltage Power Supply Devices for Shore-based Power Supply of Ports (JT/T 1071-2016) is an important technical specification for the construction of shore power systems in ports in my country. It is applicable to power supply systems with a voltage of 0.4kV-11kV and a frequency of 50/60Hz. Its main technical framework includes:

Technical module	Core requirements	Test standards
Power supply quality	Voltage fluctuation ≤±5%, frequency deviation ≤0.5Hz	GB/T 12325/15945
Protection level	Power connection device ≥IP55, socket ≥IP65	IEC 60529
Safety protection	Overload 130% for 60s cut-off	GB/T 14048.1
Environmental adaptability	-20℃~+60℃/100% humidity	GB/T 2423.2

Analysis of key technical requirements

1. Power quality control system

The standard requires the configuration of a dual closed-loop control system:

Basic closed loop: power supply body regulation system (voltage/frequency accuracy ±1%)
Advanced closed loop: shore-ship collaborative control system (supports three-phase imbalance adjustment)

2. Special environmental protection

Special provisions for port salt spray environment:

The case of Shanghai Yangshan Port shows that the service life of the power connection device with nickel-plated terminals is increased by more than 3 times in a salt spray environment.

Implementation Recommendations

Key Points for Equipment Selection

The inverter capacity should be configured according to the ship load rate ≤40%
Mobile power box should preferably use the standard container structure (GB/T 1413)
Cable reels should be equipped with anti-condensation heaters

Operation and Maintenance Management Requirements

Periodic	Inspection Items	Standard Values
Monthly	Grounding Resistance	≤4Ω (GB 50169)
Quarterly	Insulation resistance	≥10MΩ (GB/T 16927.1)
Annual	Temperature rise test	≤70K (specified in Table 3)

Standard Evolution Analysis

Main differences between this standard and the IEC/ISO/IEEE 80005-1 international standard:

Stricter harmonic requirements: THD≤5% (international standard is 8%)
New transient response indicator: Recovery time≤1.5s
Strengthened salt spray protection: Metal parts are required to pass a 96-hour salt spray test

More samples: DL/T 368-2010 GB 50021-2001(2009) QC/T 942-2021

Sample only — not a preview of JT/T 1071-2016