GB 7260.4-2008Uninterruptible Power Systems (UPS) -- Part 1-2: General and safety requirements for UPS used in restricted access locations (English PDF)

1.1 Scope

GB 7260 apply to this portion of the DC link uninterruptible power supply apparatus having an electronic storage device. This section cited GB 4943-2001 and IEC 60950-1:2001 related content.

The main function of this portion includes an uninterruptible power supply (UPS) is to ensure the continuity of the AC power output. UPS also allows electricity Retention characteristics specified source, thereby improving power quality. GB 4943-2001 and 60950-1 IEC .2001 related chapters on regional difference the same comment applies different.

This section applies the predetermined touch area installed in a restricted, low voltage distribution systems for mobile, in vertical, fixed or fitted formula UPS. This section provides the safety of personnel servicing requirements.

This section is intended to ensure the safety of the installation according to the method specified by the manufacturer, operation and maintenance of the UPS. UPS UPS may be a single unit, but also interconnect the UPS system.

This portion does not include a DC power supply of an electronic ballast (IEC 60347 and IEC 60925) and a rotating electric machine based UPS.

General and safety requirements for UPS installed in a predetermined area of the operator access, see GB 7260.1, electromagnetic compatibility (EMC) and requirements defined in GB 7260.2.

1.2 Special Applications

Although this section does not include all types of UPS, but still as its guiding document. For particular applications of UPS, may Some require additional energy requirements of this Part. These specific uses include.

--- UPS predetermined exposure work in the following environment. temperature extremes, excessive dust, humidity or vibration, flammable gas, corrosive or Explosive atmosphere, and so on;

--- physical contact area is within the patient 1.5m, UPS equipped with medical electronic equipment;

--- When the UPS withstand transient overvoltages exceeding GB /16935.1-1997 over the predetermined voltage category II in T, UPS power Some may require additional protection measures;

--- UPS may be flooded for the occasion and invasion of foreign substances need additional requirements. These guidelines and requirements related tests Appendix H;

--- long (over 30min) running Fang Bo output voltage waveform distortion UPS should be tested to verify the compatibility of the load.

Note. Scheduled UPS on a vehicle, boat or aircraft used or tropical regions, or in areas above 1000m altitude UPS, you may be required Different requirements.

3.1 General

This section uses the following definitions. GB 4943-2001 and IEC 60950-1:2001 is also relevant definitions apply to this section.

Unless otherwise specified, "voltage" and "current" are root mean square values (r.m.s value) used in this part.

NOTE. When the presence of a non-sinusoidal signal, use can give the real root mean square value of the measuring instrument readings. Other definitions and terms refer to GB/T 7260.3.

3.1.1.

Constituted by a combination of converters, switches and energy storage device (secondary battery), when the input power failure to maintain continuity of load power supply equipment.

3.1.2.

Load power within the rated voltage and frequency in steady state and transient tolerance range, and waveform distortion and interrupted for a predetermined load limit.

3.1.3

Alternatively indirect communication path power converter.

3.1.4

Any change in load results in unacceptable performance device power supply.

3.1.5

Provided by a public power supply system or the user of the power generators.

3.1.6

The sum of the harmonic components of the electrical power of the output end of each fundamental frequency and power output. In units of watts or kilowatts.

3.1.7

The product of the output voltage of the root mean square current value and the root mean square value.

3.1.8

Stated by the manufacturer input or output supply voltage (line voltage three-phase power supply system refers).

3.1.9

Input declared by the manufacturer or the output power supply voltage range, represented by a lower limit and an upper limit value of the rated voltage.

3.1.10

Manufacturer's declaration of UPS maximum input or output current.

3.1.11

In the case of the storage operation mode and the main power is not available, a portion of the voltage or energy within the UPS directly or through a reverse leakage path Fed to either input terminal.

3.2 Operating Conditions

3.2.1.

As close to the manufacturer's instructions provided in the normal operation mode using the most severe conditions. However, when the actual conditions of use than when the manufacturer's recommended maximum load conditions harsh obviously, the maximum load can be applied should be used.

Note. Examples UPS reference load condition Appendix M.

3.2.2.

Current from the power load described by the relationship.

I = U/Z

Where.

I --- the load current;

--- the U-supply voltage;

Z --- load impedance.

3.2.3

Parameter load impedance (Z) is no longer a constant, but varies with other parameters such as the load voltage or the like of time (see Appendix M).

3.2.4

UPS power supply to run under the following circumstances.

--- mains interruptions or beyond a given tolerance;

--- the battery is being discharged;

--- load is within a given range;

--- the output voltage within a given tolerance.

In the definition of GB 4943-2001 1.2.3 apply.

In the definition of GB 4943-2001 1.2.4 apply.

In the definition of GB 4943-2001 1.2.5 apply.

GB 4943-2001 1.2.6 definitions apply.

In the definition of GB 4943-2001 1.2.7 apply.

IEC 60950-1:2001 definition 1.2.8 apply.

3.8.1

GB 4943-2001 defined in 1.2.8.4 apply.

1.2.9 The definition of GB 4943-2001 applies.

3.10

GB 4943-2001 in 1.2.10 definitions apply.

3.11

IEC 60950-1:2001 1.2.11 definitions apply.

3.12

The definition of the 4943-2001 GB 1.2.8 apply.

3.13

IEC 60950-1:2001 1.2.12 definitions apply.

3.14

The definition of GB 4943-2001 1.2.13.2,1.2.13.3,1.2.13.4,1.2.13.7 and 1.2.13.8 of the following a and apply.

3.14.1

1.4.2 the definition of GB 4943-2001 and the following shall apply in conjunction.

Within the scope of this section, to check the compliance of the material if, components, parts by inspection or testing characteristics, allows to check any Related data or a suitable conventional type test results instead of defined.

Note. For large or high-power devices, may not have the appropriate test facilities some type testing.

The above-described situation also exists in some electrical test. These tests simulate the device can not obtain or special test facilities from commercial sources Beyond the scope of the manufacturer can be resolved.

3.15

The following definitions apply. GB 4943-2001 of 1.2.8.9,1.2.8.10,1.2.8.11,1.2.8.12,1.2.13.8.

4.1 UPS design and construction

UPS should be designed and constructed so that in normal conditions of use and all possible fault conditions, within the scope of the meaning of this protective Electric shock and other hazards resulting from personal injury, and severe fire load caused by UPS or connected.

When no specific security requirements, UPS design should also be provided in this section is not less than the general level of safety.

Unless otherwise specified, all testing and test checked by its compliance.

Note. In order to meet the demand for additional detailed requirements of the new situation, should quickly draw the corresponding technical Committee.

4.2 User Information

The manufacturer shall provide users with all the necessary information to ensure that users in the use of the device according to the manufacturer's instructions not cause this section Dangerous within the meaning of (see 4.8).

Compliance is checked by inspection.

4.3 UPS classification

The shock protection device classification, UPS This section covers for Class I devices.

4.4 General Test Conditions

GB 4943-2001 in 1.4.1,1.4.2,1.4.3,1.4.6,1.4.7,1.4.10,1.4.11,1. 4.13,1.4.14 and IEC 60950-1. 1.4.8,1.4.12 2001 together with the following apply.

Only leakage currents and temperature tolerance test should be conducted within the input voltage, the other tests were conducted at a nominal input voltage.

4.5 When the operating parameters of the test

Unless other provisions of this part specifies a particular test conditions, and these conditions would obviously have a significant impact on the test results, or should be in Operating specification of the manufacturer, the following parameters were tested in the most unfavorable combination of conditions.

--- supply voltage;

--- loss of power supply voltage;

--- supply frequency;

--- Battery charging conditions;

--- the UPS machine installation position and the position of the detachable parts;

---Operation mode.

4.6 Test load

Where it is determined that the input current may be affected and other test results, the following factors should be considered and adjusted to produce the least Lee result of the situation.

--- recharging the battery a load;

--- proposed manufacturer or configured or supported option with the device within the test device;

--- manufacturer predetermined configuration, by means of other test load powering the device.

Load simulation tests the load can be manually.

4.7 Parts

GB 4943-2001 1.5.8 of 1.5.1,1.5.2,1.5.4 to apply.

4.8 Power Interface

GB 4943-2001 1.6.4 of 1.6.1,1.6.2 and together with the following apply.

If the equipment has neutral, the neutral line should be the same in phase with the line isolation and the fuselage. It is connected between the neutral and ground components Rated working voltage should be equal to the phase voltage. When the input and output neutral isolation, maintenance personnel responsible for installation of wiring according to local regulations and detailed description of the installation instructions output neutral configuration.

Compliance is checked by inspection.

4.9 Identification and Description

4.9.1 Overview

UPS should identify the following detailed requirements or equivalent text. It should be apparent identity or equipment located appearance. If the CID is in solid an outer set of devices, the conditions of normal use should be apparent from the press installation.

If the flag is not visible outside the device, but opens the door or the cover directly visible, that are satisfactory.

4.9.2 Power Ratings

Shall be of adequate labeling provisions.

--- Input power requirements;

--- output power rating.

A plurality of rated voltage apparatus shall designate corresponding rated current, and washed successively with slash delimiter "/" are separated, and can apparent rated Correspondence between the voltage and rated current.

Rated voltage range of the device shall be marked with the maximum rated current or current range.

GB 4943-2001 in addition to the relevant content, input and output should identify comprising.

--- rated output voltage;

--- rated output current or the rated power (in volt-ampere (VA)) or the active power (in watts (W is));

--- if the rated output power factor less than 1, the rated output power factor to be marked, or active power and apparent power, real power, or Ratio and a rated current;

--- Output number of phases (1 or 3), with or without neutral line;

--- rated output active power in watts (W) or Kilowatt (kW) (see Appendix M);

--- rated output apparent power, in units of volt-ampere (VA) or from kVA (kVA) (see Appendix M);

--- the maximum operating ambient temperature range (optional).

Note. Compliance is checked in accordance with Appendix M.

Design additional separate automatic bypass/maintenance bypass, an additional battery or external AC power supply input device, it may be a randomly assigned Specification means a respective predetermined power rating. In this case, there should be at or near the junction of the following description.

The front power connection, see the installation instructions If no direct connection with the main power source, it is not necessary to mark the rated current.

4.9.3 Safety Instructions

The manufacturer shall specify UPS installation, operation and maintenance conditions relevant documents or product samples.

When the UPS is designed to be used only in limiting access areas (does not meet the GB 4943-2001 1.2.6.2 of the fire enclosure to Demand), the installation instructions should be clear that the UPS can only require the installation of GB 16895.2-2005.

If necessary, transportation, installation and operating instructions should express appropriate and properly installed, certain important method of commissioning and operation of the UPS.

If necessary, the above documents should be given explicitly recommended maintenance scope and frequency.

If the circuit is not easily distinguished from the physical structure of the UPS should provide appropriate information, such as the connection of FIG.

If the UPS power distribution systems used in IT and building electrical apparatus requires additional components, it should be clearly given in the safety specification, at the same time should meet all the requirements of 5.3.

Note 1. may require special attention, for example. an interconnect device coupled to the battery and a power source connected between each of the separate unit (if any).

NOTE 2. When applicable, shall be described with reference to national wiring installation procedure.

Design additional separate automatic bypass/maintenance bypass, an additional battery or external AC power supply input device, it may be a randomly assigned Specification means a respective predetermined power rating. In this case, there should be at or near the junction of the following description.

The front power connection, see the installation instructions the manufacturer shall provide guidance to the user according to ability level operating equipment required, such as

--- Allow only licensed access to restricted access areas of operation.

When used with a mains isolating device is not installed in the disconnect devices (see GB 4943-2001 3.4.2), should be installed the specification statement.

--- permanent connection type UPS, disconnect should be installed on the device easy to operate fixed wiring;

--- for the pluggable connector as UPS and disconnect means UPS output socket should be installed in close proximity, and easy to operate.

For external automatic backfeed isolation permanent connection type UPS, the user request specification. UPS power away from the main area of all the Increase warning labels on the release means, electrical alert maintenance personnel to the UPS power supply circuit.

Warning label or equivalent text should contain the following words.

Front line construction, disconnect UPS

4.9.4 Voltage regulation

GB 1.7.4 is applicable 4943-2001.

4.9.5 Power outlet

Unless the power outlet to meet the rating, or close to each power outlet should have expressly identify the maximum allowable load.

4.9.6 Fuse

In each fuse or near the base (or elsewhere, but it should clearly identify which correspond to the fuse holder) should express blown identity Rated current and active power (if the fuse holder suitable for different rated voltage fuse). As an alternative, such information should Given in the user manual.

If it is necessary to use special blowing fuses having characteristics (e.g., delay or breaking capacity), the type of fuse should be labeled.

4.9.7 Terminals

The protective ground conductor connection terminal and power supply comes predetermined connection shall be marked with a graphical symbol.

You should not use this ground terminal symbol.

NOTE. This requirement applies to the protective earth conductor connecting terminal, whether the terminal is a power cord can not be separated along part or power supply conductor.

Dedicated to the predetermined neutral conductor connected to the main power supply (if any) of the terminal application capital letter "N" indicated.

Three phase UPS, the predetermined power source and the conductor connecting terminal shall GB/T 4026-2004 provides the manufacturer or installation instructions standard Shows.

Three-phase UPS, if an abnormal phase sequence cause overheating or other hazards, the predetermined terminal is connected to the main power source conductor Together with any installation instructions should be given a clear phase sequence identity.

Other components may be disassembled these flags should be placed on screws or the wiring.

4.9.8 Battery Terminal

And predetermined terminals of the battery connection shall GB/T 5465.2 indicated polarity.

4.9.9 Controls and indicators

GB 4943-2001 1.7.8 apply.

4.9.10 Multiple isolated power supply

GB 1.7.9 is applicable 4943-2001.

4.9.11 IT power distribution system

GB 1.7.10 of the applicable 4943-2001.

4.9.12 Protection in building facilities

GB 5.3.1 is applicable 4943-2001.

Note. It is noted that in different countries wiring codes (if any) on the protection requirements of the public power supply systems.

4.9.13 Large leakage current

GB 5.1 in 4943-2001 together with the following apply.

B as a predetermined plug-type device or a fixed type UPS, if any of the operating mode, UPS and all the loads connected the sum of the leakage current leakage current on the primary UPS protective earth conductor exceeds or is likely to exceed 5.1 GB 4943-2001 predetermined limits, the UPS due GB 5.1 on the warning label requirements 4943-2001. Installation Manual connection method should provide the main power supply.

4.9.14 Other temperature control and adjustment means

See GB 4943-2001 of 1.7.11.

4.9.15 Language

Unless otherwise required by the user, to the end user documentation, as well as man-machine interface specification should be used to identify Chinese.

Durability 4.9.16 logo GB 4943-2001 of 1.7.13 apply.

4.9.17 Removable parts

GB 1.7.14 of the applicable 4943-2001.

4.9.18 Replaceable batteries

GB 1.7.15 of the applicable 4943-2001.

4.9.19 Operator to use the tool to reach

GB 1.7.16 of the applicable 4943-2001.

4.9.20 Battery

External UPS battery box built-in battery or UPS cabinet shall have the following information clearly understood that the position of the maintenance personnel should be dimensional Easy to see when repair UPS, and meet the requirements of GB 4943-2001 1.7.1.

Or the number of cells the battery section number a)) and the battery pack battery type (lead acid, nickel cadmium and the like;

b) total nominal battery voltage;

Total nomina...