历史趣谈80%墓埋下不久被盗 古人为何迷信挖祖坟？

The WJ-80 interface for an outdoor keypad / readerMKM510022The WJ-80 interface for an outdoor keypad / readerThe WJ-80 is a component of Jablotron’s JA-80 Oasis 80 system. It is designed to connect JA-80H outdoor keypads or JA-80N RFID readers to a control panel. It provides an output to operate the electric strike of a door lock and is equipped with a wireless door bell transmitter.The WJ-80 can also be used to interface to a third party keypad (reader) which uses Wiegand 26b protocol (e.g. HID RK-40 a RK-10).InstallationInstallation shall only be undertaken by technicians holding a certificate issued by an authorized distributor. It should be placed in a protected internal part of a house (usually near an entrance door equipped with an electric lock).Open the front cover by unscrewing the screw and take out the electronic circuit board (held by 2 tabs). Install the back part of the housing to the desired place, put back the electronic circuit board and connect the cables – see the following diagram. Do not connect the power before all wiring up and setting the DIP switches has been finished.TerminalsControl panel (C.P.) bus cable +U, B, A, GNDconnect to the corresponding terminals in the C.P.Keypad/reader cable – a max. of one JA-80H or JA-80N can be wired in terminal wire+12V red (power, max. 60mA)D0 green (DO data of Wiegand 26b) D1 brown (D1 data of Wiegand 26b)TMP grey (TAMPER input, triggers if disconnected from GND)BZR yellow (output to operate the keypad buzzer by grounding it,max. 10mA)GND blue and white (ground) OPN unlock input – grounding this terminal activates the outputrelay for a period selected by DIP switch # 3. Can be used as a push button input to open the door from the inside.A third party keypad/reader can be used if it uses Wiegand 26b protocol, but Jablotron cannot guarantee its compatibility. Electric door lock output+E , GND a power supply to activate the electric strike of a door lock (itslong-term current is limited by a resistor and its initial energy pulse is supplied by a reservoir capacitor). The power output is optimised for door locks of the type Jablotron Z8-12V.C and NO normally open dry contact of the output relay (max. 5A / 60V)DIP switchesInterface features can be set by the DIP switches:# OFF ON 1 the keypad (reader) works as a control panel (CP) keypad . The output relay can be activated by a PGY output (if DIP #2 is on) the keypad (reader) only operatesthe door lock and starts a CP entrance delay if the CP is set (armed). The output relay is activatedby a valid code (card) entry on the connected keypad.2 no reaction to PGY output of CP relay reacts to the PGY output3 relay energizes for 3 sec. relay energizes for 6 sec.4 no entrance and exit beeps from the connected keypadexit and entrance beeps enabled** disconnect the yellow wire from the BZR terminal to switch the keypad’s acoustic and optical indication off completely.The connected keypad / reader functionFor the WJ-80 to function properly, the control panel should have its back-up battery connected. The basic function of the keypad / reader is determined by DIP switch # 1:OFF = the keypad / reader works as a control panel keypad and can therefore be used to operate and program the alarm system. The output relay can only be activated in this mode by the CP’s programmable PGY output (if DIP switch # 2 is ON, the duration of relay activation is set by DIP switch # 3).ON = the keypad / reader only operates the door lock (external bypass function). It means:The door lock opens by: a valid code (card) entry, grounding the OPN terminal and, if DIP # 2 is on, then also by triggering the PGY output (this can be used to open the door by entering ∗9 on the control panel keypad).• If the door lock opens (by any of the above ways) while the alarm system is set, the entrance delay will start (as if a delayed detector has just been triggered).• When the external keypad / reader is in this mode it cannot be used to set, unset or program the alarm system. It can however be used to program access codes (cards) the same way as via the control panel keypad (by the ∗6 sequence).• If operation of the control panel by the service code (sequence 6921 in the control panel) is enabled, then the service code cannot be used for door opening.The JA-80H’s door bell buttonThe bottom left key on the keypad can be used as a door bell button if the JA-80L wireless siren has been installed. If this function is desired, the button should be enrolled to the JA-80L siren (by pressing it while the siren is in enrollment mode). If the door bell button is used, the WJ-80 housing should not be shielded by any metal which could block radio signals.Configuring the keypad for operation with the WJ-80If the JA-80H keypad or JA-80N reader is connected to an Oasis control panel via a WJ-80 unit and it does not work as described above, then it is not set to the correct (factory default) operational mode. In such a case, follow the keypad / reader manual.SpecificationsPower via the control panel bus Standby consumption approx. 60mA (incl.JA-80H or 80N) Output relay contact max. 5A/60V Built-in doorbell transmitter 868MHz, Oasis protocol Operational environment II. indoor general, –10 to +40 °C (EN50131-1) WJ-80 dimensions 76 x 110 x 33 mm EN 50131-1, EN 50131-5-3 Grade 2 Can be operated according to ERC REC 70-03FCC ID VL6WJ80Jablotron Ltd. hereby declares that the WJ-80 is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC and complies with part 15 of the FCC rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation.CAUTION: Changes or modifications no expressly approved by Jablotron could void the user´s authority to operate the equipment. The original of the conformity assessment can be found at , Technical Support section.Note: Although this product does not contain any harmful materials we suggest you return the product to the dealer or directly to the producer after use.。

write函数过程解析write函数作为⽤户向终端或者⽂件进⾏写数据的重要函数，有着重要的作⽤。

|------| |---------| |---------| |----------|　| write |----->|sys_write|-------->|vfs_write|------->|ext4_write||------| |---------| |---------| |----------|上⾯是write函数从⽤户空间到内核空间的过程。

⽐如下⾯这个具体的例⼦write_test.c：#include <unistd.h>#include <stdio.h>#include <fcntl.h>#include <stdlib.h>#include <string.h>int main(void){char buffer[10] = "hello\n";int count;int fd = open ("ab.txt",O_RDWR);if (fd == -1){fprintf(stderr,"can't open file:[%s]\n","ab.txt");exit(EXIT_FAILURE);}count = write(fd,buffer,strlen(buffer));if (count == -1){fprintf(stderr,"write error\n");exit(EXIT_FAILURE);}exit(EXIT_SUCCESS);}采⽤gcc静态编译的⽅式：gcc -static -o read_write read_write.c 【使⽤静态编译的⽅式是为了更好的观看汇编代码】接下来进⾏如下：root@node1:~/unixprogram# objdump -d write_test > assemble 【注：因显⽰的汇编代码有11万⾏，所以保存为⽂件，采⽤动态链接库的⽅式⽂件⼩很多，这是默认的gcc编译选项】查看assemble⽂件：【挑选重要的⾏】08048250 <main>:......80482d9: 89 44 24 04 mov %eax,0x4(%esp)80482dd: 8b 44 24 18 mov 0x18(%esp),%eax80482e1: 89 04 24 mov %eax,(%esp)80482e4: e8 e7 77 00 00 call 804fad0 <__libc_write>......上⾯是对应于main函数中的汇编，显⽰的是调⽤的是__libc_write函数0804fad0 <__libc_write>:804fad0: 65 83 3d 0c 00 00 00 cmpl $0x0,%gs:0xc804fad7: 00804fad8: 75 21 jne 804fafb <__write_nocancel+0x21>上⾯对应的是__libc_write函数的汇编代码，在__libc_write函数中显⽰它调⽤了__write_nocancel函数0804fada <__write_nocancel>:804fada: 53 push %ebx804fadb: 8b 54 24 10 mov 0x10(%esp),%edx804fadf: 8b 4c 24 0c mov 0xc(%esp),%ecx804fae3: 8b 5c 24 08 mov 0x8(%esp),%ebx804fae7: b8 04 00 00 00 mov $0x4,%eax804faec: cd 80 int $0x80......从__write_nocancel函数中我们可以看到，在这⾥传递给eax寄存器⽴即数4，这是系统调⽤write的调⽤number，然后就进⾏软中断int $0x80进⼊到内核状态，进⾏的是system_call()中断处理函数。

Lenovo ThinkAgile HX5521 Certified Node(Xeon SP Gen 1)Product Guide (withdrawn product)Lenovo ThinkAgile HX Certified Nodes are designed for deploying industry-leading hyperconvergence software from Nutanix on Lenovo enterprise platforms that feature the first generation of the Intel Xeon Processor Scalable Family (Xeon SP Gen 1).The ThinkAgile HX Certified Nodes deliver fully validated and integrated Lenovo hardware and firmware, certified and preloaded with Nutanix software. Nutanix brings the benefits of web-scale technologies to enterprise applications through enterprise storage, data protection, infrastructure resilience, management and analytics, and security.The ThinkAgile HX5521 is a 2U rack-mount certified node that supports two processors, up to 3 TB of2666 MHz TruDDR4 memory, 12x or 14x SAS/SATA SFF hot-swap drive bays with an extensive choice of SATA SSDs and HDDs, and flexible network connectivity options with 1/10 GbE RJ-45, 10 GbE SFP+, and 10/25 GbE SFP28 ports.Several common uses for the ThinkAgile HX Certified Nodes that are optimized for storage-heavy workloads include file servers, on-cluster backups, and big data.The ThinkAgile HX5521 Certified Node is shown in the following figure.Figure 1. ThinkAgile HX5521 Certified NodeDid you know?The ThinkAgile HX Certified Nodes are built on industry-leading Lenovo ThinkSystem servers that feature enterprise-class reliability, management, and security.The ThinkAgile HX Certified Nodes deliver fully validated and integrated hardware and firmware that is certified with Nutanix software.Click here to check for updatesFigure 2. HX5521 front viewFigure 3. HX5521 12-drive bay node rear viewThe following figure shows the rear view of the HX5521 Certified Node with 14 drive bays.Figure 4. HX5521 14-drive bay node rear viewThe rear of the HX5521 Certified Node includes the following components:Five (models with 12 drive bays) or three (models with 14 drive bays) PCIe expansion slots Two LFF SAS/SATA hot-swap rear drive bays (models with 14 drive bays)One LOM card slotOne 1 GbE port for XClarity ControllerOne VGA portTwo USB 3.0 portsTwo hot-swap power suppliesConfiguration note: A low profile SAS HBA for internal storage is derived by the configurator, and it occupies the PCIe slot 7.Drives for internal storageThe following tables list the drive selection options.Table 8. Drive selection options: Hybrid configurationsDescription Part number FeaturecodeQuantity(min / max)SSD selection (Cache tier): SAS 12Gb SSDs - PM1633a CapacityThinkSystem 3.5" PM1633a 3.84TB Capacity SAS 12Gb Hot Swap SSD4XB7A10173B2XC 2 / 4 SSD selection (Cache tier): SAS 12Gb SSDs - PM1635a MainstreamThinkSystem 3.5" PM1635a 800GB Mainstream SAS 12Gb Hot Swap SSD4XB7A10188B2XD 2 / 4 ThinkSystem 3.5" PM1635a 1.6TB Mainstream SAS 12Gb Hot Swap SSD4XB7A10187B2XE 2 / 4 SSD selection (Cache tier): SAS 12Gb SSDs - PM1645 MainstreamThinkSystem 3.5" PM1645 800GB Mainstream SAS 12Gb Hot Swap SSD4XB7A13657B4A3 2 / 4 ThinkSystem 3.5" PM1645 1.6TB Mainstream SAS 12Gb Hot Swap SSD4XB7A13658B4A4 2 / 4 SSD selection (Cache tier): SATA 6Gb SSDs - S4600 MainstreamThinkSystem 3.5" Intel S4600 480GB Mainstream SATA 6Gb Hot Swap SSD7SD7A05717B0ZU 2 / 4 ThinkSystem 3.5" Intel S4600 960GB Mainstream SATA 6Gb Hot Swap SSD7SD7A05716B0ZV 2 / 4 ThinkSystem 3.5" Intel S4600 1.92TB Mainstream SATA 6Gb Hot Swap SSD7SD7A05715B109 2 / 4 SSD selection (Cache tier): SATA 6Gb SSDs - S4610 MainstreamThinkSystem 3.5" Intel S4610 480GB Mainstream SATA 6Gb Hot Swap SSD4XB7A13640B49S 2 / 4 ThinkSystem 3.5" Intel S4610 960GB Mainstream SATA 6Gb Hot Swap SSD4XB7A13641B49T 2 / 4 ThinkSystem 3.5" Intel S4610 1.92TB Mainstream SATA 6Gb Hot Swap SSD4XB7A13642B49U 2 / 4 SSD selection (Cache tier): SATA 6Gb SSDs - PM883 EntryThinkSystem 3.5" PM883 3.84TB Entry SATA 6Gb Hot Swap SSD4XB7A17180B6JZ 2 / 4 SSD selection (Cache tier): SATA 6Gb SSDs - S4510 EntryThinkSystem 3.5" Intel S4510 3.84TB Entry SATA 6Gb Hot Swap SSD4XB7A13629B49H 2 / 4 HDD selection (Capacity tier): SAS 12Gb HDDsThinkSystem 3.5" 10TB 7.2K SAS 12Gb Hot Swap 512e HDD7XB7A00046AUUG 4 / 8 HDD selection (Capacity tier): SATA 6Gb HDDsThinkSystem 3.5" 4TB 7.2K SATA 6Gb Hot Swap 512n HDD7XB7A00051AUU8 6 / 12 ThinkSystem 3.5" 6TB 7.2K SATA 6Gb Hot Swap 512e HDD7XB7A00052AUUA 6 / 12 ThinkSystem 3.5" 8TB 7.2K SATA 6Gb Hot Swap 512e HDD7XB7A00053AUU9 4 / 10 ThinkSystem 3.5" 10TB 7.2K SATA 6Gb Hot Swap 512e HDD7XB7A00054AUUB 4 / 83m Cat6 Green Cable 00WE139AVG010m Cat6 Green Cable 90Y3718A1MT 25m Cat6 Green Cable90Y3727A1MWDescriptionPart number Feature code The following table lists transceivers and cables for the 10 GbE SFP+ ports.Table 12. Transceivers and cables for 10 GbE SFP+ portsDescriptionPart numberFeature code10 GbE SFP+ SR transceivers for 10 GbE SFP+ ports Lenovo 10GBASE-SR SFP+ Transceiver 46C34475053Lenovo 10GBASE-LR SFP+ Transceiver 00FE331B0RJOptical cables for 10 GbE SFP+ SR transceivers Lenovo 0.5m LC-LC OM3 MMF Cable 00MN499ASR5Lenovo 1m LC-LC OM3 MMF Cable 00MN502ASR6Lenovo 3m LC-LC OM3 MMF Cable 00MN505ASR7Lenovo 5m LC-LC OM3 MMF Cable 00MN508ASR8Lenovo 10m LC-LC OM3 MMF Cable 00MN511ASR9Lenovo 15m LC-LC OM3 MMF Cable 00MN514ASRA Lenovo 25m LC-LC OM3 MMF Cable00MN517ASRB Passive SFP+ DAC cables for 10 GbE SFP+ ports Lenovo 0.5m Passive SFP+ DAC Cable 00D6288A3RG Lenovo 1m Passive SFP+ DAC Cable 90Y9427A1PH Lenovo 1.5m Passive SFP+ DAC Cable 00AY764A51N Lenovo 2m Passive SFP+ DAC Cable 00AY765A51P Lenovo 3m Passive SFP+ DAC Cable 90Y9430A1PJ Lenovo 5m Passive SFP+ DAC Cable 90Y9433A1PK Lenovo 7m Passive SFP+ DAC Cable00D6151A3RHActive SFP+ DAC cables for 10 GbE SFP+ ports Lenovo 1m Active DAC SFP+ Cable 00VX111AT2R Lenovo 3m Active DAC SFP+ Cable 00VX114AT2S Lenovo 5m Active DAC SFP+ Cable00VX117AT2TSFP+ active optical cables for 10 GbE SFP+ ports Lenovo 1m SFP+ to SFP+ Active Optical Cable 00YL634ATYX Lenovo 3m SFP+ to SFP+ Active Optical Cable 00YL637ATYY Lenovo 5m SFP+ to SFP+ Active Optical Cable 00YL640ATYZ Lenovo 7m SFP+ to SFP+ Active Optical Cable 00YL643ATZ0Lenovo 15m SFP+ to SFP+ Active Optical Cable 00YL646ATZ1Lenovo 20m SFP+ to SFP+ Active Optical Cable00YL649ATZ2The following table lists transceivers and cables for the 25 GbE SFP28 ports. Table 13. Transceivers and cables for 25 GbE SFP28 portsDescription Part number Feature code25 GbE SFP28 SR transceivers for 25 GbE SFP28 portsLenovo 25GBase-SR SFP28 Transceiver7G17A03537AV1B Optical cables for 25 GbE SFP28 SR transceiversLenovo 0.5m LC-LC OM3 MMF Cable00MN499ASR5 Lenovo 1m LC-LC OM3 MMF Cable00MN502ASR6 Lenovo 3m LC-LC OM3 MMF Cable00MN505ASR7 Lenovo 5m LC-LC OM3 MMF Cable00MN508ASR8 Lenovo 10m LC-LC OM3 MMF Cable00MN511ASR9 Lenovo 15m LC-LC OM3 MMF Cable00MN514ASRA Lenovo 25m LC-LC OM3 MMF Cable00MN517ASRB Passive copper cables for 25 GbE SFP28 portsLenovo 1m Passive 25G SFP28 DAC Cable7Z57A03557AV1W Lenovo 3m Passive 25G SFP28 DAC Cable7Z57A03558AV1X Lenovo 5m Passive 25G SFP28 DAC Cable7Z57A03559AV1Y Active optical cables for 25 GbE SFP28 portsLenovo 3m 25G SFP28 Active Optical Cable7Z57A03541AV1F Lenovo 5m 25G SFP28 Active Optical Cable7Z57A03542AV1G Lenovo 10m 25G SFP28 Active Optical Cable7Z57A03543AV1H Lenovo 15m 25G SFP28 Active Optical Cable7Z57A03544AV1J Lenovo 20m 25G SFP28 Active Optical Cable7Z57A03545AV1KPower supplies and cablesThe HX5521 Certified Nodes ship with two power supplies. The following table lists the powersupply options that are available for selection.Table 14. Power supply selection optionsDescription Featurecode QuantityThinkSystem 750W (230/115V) Platinum Hot-Swap Power Supply AVWD2 ThinkSystem 750W (230V) Titanium Hot-Swap Power Supply AVWE2 ThinkSystem 1100W (230V/115V) Platinum Hot-Swap Power Supply AVWF2India 2.8m, 10A/250V, C13 to IS 6538 Line Cord 39Y79276269India 4.3m, 10A/250V, C13 to IS 6538 Line Cord 81Y23866567Israel 2.8m, 10A/250V, C13 to SI 32 Line Cord 39Y79206218Israel 4.3m, 10A/250V, C13 to SI 32 Line Cord 81Y23816579Italy 2.8m, 10A/250V, C13 to CEI 23-16 Line Cord 39Y79216217Italy 4.3m, 10A/250V, C13 to CEI 23-16 Line Cord 81Y23806493Japan 2.8m, 12A/125V, C13 to JIS C-8303 Line cord 46M2593A1RE Japan 2.8m, 12A/250V, C13 to JIS C-8303 Line Cord 4L67A083576533Japan 4.3m, 12A/125V, C13 to JIS C-8303 Line Cord 39Y79266335Japan 4.3m, 12A/250V, C13 to JIS C-8303 Line Cord 4L67A083626495Korea 2.8m, 12A/250V, C13 to KS C8305 Line Cord 39Y79256219Korea 4.3m, 12A/250V, C13 to KS C8305 Line Cord 81Y23856494South Africa 2.8m, 10A/250V, C13 to SABS 164 Line Cord 39Y79226214South Africa 4.3m, 10A/250V, C13 to SABS 164 Line Cord 81Y23796576Switzerland 2.8m, 10A/250V, C13 to SEV 1011-S24507 Line Cord 39Y79196216Switzerland 4.3m, 10A/250V, C13 to SEV 1011-S24507 Line Cord 81Y23906578Taiwan 2.8m, 10A/125V, C13 to CNS 10917-3 Line Cord 23R71586386Taiwan 2.8m, 10A/250V, C13 to CNS 10917-3 Line Cord 81Y23756317Taiwan 2.8m, 15A/125V, C13 to CNS 10917-3 Line Cord 81Y23746402Taiwan 4.3m, 10A/125V, C13 to CNS 10917-3 Line Cord 4L67A08363AX8BTaiwan 4.3m, 10A/250V, C13 to CNS 10917-3 Line Cord 81Y23896531Taiwan 4.3m, 15A/125V, C13 to CNS 10917-3 Line Cord 81Y23886530United Kingdom 2.8m, 10A/250V, C13 to BS 1363/A Line Cord 39Y79236215United Kingdom 4.3m, 10A/250V, C13 to BS 1363/A Line Cord 81Y23776577United States 2.8m, 10A/125V, C13 to NEMA 5-15P Line Cord 90Y30166313United States 2.8m, 10A/250V, C13 to NEMA 6-15P Line Cord 46M2592A1RF United States 2.8m, 13A/125V, C13 to NEMA 5-15P Line Cord 00WH5456401United States 4.3m, 10A/125V, C13 to NEMA 5-15P Line Cord 4L67A083596370United States 4.3m, 10A/250V, C13 to NEMA 6-15P Line Cord 4L67A083616373United States 4.3m, 13A/125V, C13 to NEMA 5-15P Line Cord4L67A08360AX8ADescriptionPart number Feature code Configuration note: If the 1100 W AC power supplies in the certified node are connected to a low-voltage power source (100 - 125 V), the only supported power cables are those that are rated above 10 A; cables that are rated at 10 A are not supported.Rack installationRack installationThe HX5521 Certified Nodes ship with a rail kit. The following table lists the rail kit options that are available for selection.Table 16. Rack kit selection optionsDescription FeaturecodeQuantity(min / max)4-post rail kitsThinkSystem Tool-less Slide Rail AXCA0 / 1 ThinkSystem Tool-less Slide Rail Kit with 2U CMA AXCH0 / 1 Lockable front bezelThinkSystem 2U Security Bezel AURX0 / 1Configuration note: One of the rail kits is required for selection.The following table summarizes the rail kit features and specifications.Table 17. Rail kit features and specifications summaryFeature Tool-less Slide RailWithout CMA With 2U CMACMA Not included IncludedRail length730 mm (28.74 in.)807 mm (31.8 in.)Rail type Full-out slide (ball bearing)Tool-less installation YesIn-rack maintenance Yes1U PDU support Yes0U PDU support Limited*Rack type IBM and Lenovo 4-post, IEC standard-compliant Mounting holes Square or roundMounting flange thickness 2 mm (0.08 in.) – 3.3 mm (0.13 in.)Distance between front and rear mounting flanges^609.6 mm (24 in.) – 863.6 mm (34 in.)* If a 0U PDU is used, the rack cabinet must be at least 1100 mm (43.31 in.) deep if no CMA is used, or at least 1200 mm (47.24 in.) deep if a CMA is used.^ Measured when mounted on the rack, from the front surface of the front mounting flange to the rear most point of the rail.TrademarksLenovo and the Lenovo logo are trademarks or registered trademarks of Lenovo in the United States, other countries, or both. A current list of Lenovo trademarks is available on the Web athttps:///us/en/legal/copytrade/.The following terms are trademarks of Lenovo in the United States, other countries, or both:Lenovo®Lenovo ServicesThinkAgileThinkSystemTruDDR4XClarity®The following terms are trademarks of other companies:Intel® and Xeon® are trademarks of Intel Corporation or its subsidiaries.Hyper-V®, Microsoft®, PowerShell, Windows PowerShell®, Windows Server®, and Windows® are trademarks of Microsoft Corporation in the United States, other countries, or both.Other company, product, or service names may be trademarks or service marks of others.。

煤矿瓦斯爆炸事故的电气诱因与对策煤矿井下常用开关及电气设备设备---原理，图解：QBZ-80、120、225,KBZ-400防爆磁力启动器安装与使用上面这张图，是QBZ开关的接线室内接线装置的布置图。

X1、X2、X3是电源接线柱。

D1、D2、D3是负荷接线柱。

中间的小的1-9和di 是控制线接线柱。

使用时，我们将电源电缆通过喇叭口引入接线室内，然后将3根芯线接到电源接线柱上。

煤矿电缆一般都是3+1的四芯电缆线。

即三根电源导线和一个接地导线。

接地导线接在接线室中的接地接线柱上（在上图中没有画出接地接线柱）。

D1、D2、D3接线柱使用电缆与被控制设备的电机接线柱连接后。

主电路我们就接完了。

控制电路的连接就是图中1、2、8、13、9、di 接线柱的连接。

如果是本地控制（就是使用开关本身的启动和控制按钮控制），将2号和9号接线柱相连后，再与接线室内的接地接线柱连接就可以了。

连接好电源线和负载线之后，首先从上一级开关的馈电开关给QBZ开关送上电，然后将QBZ开关的隔离开关打到“正传”或“反转”的位置，（如下图）在按下启动按钮，被控制的设备就可工作了。

停止的时候，停止的时候，只需要按下停止按钮，本控制的设备就可以停止工作。

在设备长时间不使用，或进行设备检修时，要将隔离开关旋转到“分闸”位置。

注意：隔离开关在从合闸位置旋转到“分闸”的过程中，要按住停止按钮，否则你是扳不动隔离开关的。

这是开关“五防”功能里的其中一种，作用是防止带负荷分离隔离开关。

所以，当你扳隔离开关扳不动的时候，一定要看看是不是忘了按停止按钮，或者是没有按到位。

QBZ防爆开关的隔离开关除了具有断开电源的作用外，还具有换向的作用，就是拥有“正转”和“反转”两个位置。

如果设备的电机原来是正转的，你只需要将隔离开关打到“反转”的位置。

防爆开关完好标准上面这张图，是QBZ开关的接线室内接线装置的布置图。

X1、X2、X3是电源接线柱。

D1、D2、D3是负荷接线柱。