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KEHUA TECH MY-A Series User Manual

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MY-A Series (10kVA-20kVA)

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Summary of Contents for KEHUA TECH MY-A Series

  • Page 1 User Manual MY-A Series (10kVA-20kVA)
  • Page 3 Thank you for choosing the Uninterruptible Power System (hereinafter referred to as the "UPS") product! This document gives a description of the MY-A series UPS, including the features, performance, appearance, structure, working principles, installation, operation and maintenance.etc. Please save the manual after reading, in order to consult it in the future.
  • Page 4 MY-A Series (10kVA-20kVA) UPS Foreword User Manual Symbol Description Anti-static prompting. Be care electric shock prompting. Provides a tip that may help you solve a problem or save time. Provides additional information to emphasize or supplement important points in the main text.

  • Page 5: Table Of Contents

    MY-A Series (10kVA-20kVA) UPS User Manual Contents Contents 1 Safety Description......................... 1 1.1 Safety Announcements ............................. 1 1.1.1 Safety Instructions ..........................1 1.1.2 Use Announcements for Battery ......................2 1.1.3 Anti-Static Protection ..........................3 1.2 Operation and Maintenance Requirements ...................... 3 1.3 Environment Requirements ..........................
  • Page 6 MY-A Series (10kVA-20kVA) UPS Contents User Manual 3.2.5 Select Input Breaker ..........................25 3.2.6 Select Wires ............................26 3.3 Transport and Unpacking ..........................27 3.3.1 Transport ............................... 27 3.3.2 Unpacking ............................. 28 3.4 Mechanical Installation ..........................29 3.5 Electrical Connection ............................. 32 3.5.1 UPS Wiring Operation ..........................
  • Page 7 MY-A Series (10kVA-20kVA) UPS User Manual Contents 4.5.5 HMI Setting Page ..........................66 4.5.6 Password Setting Page .......................... 67 4.5.7 Device Configuration Page ........................67 4.5.8 Dedust Setting Page ..........................70 4.5.9 Record Manage Page ..........................71 4.6 Current Fault Page ............................72 4.7 Buzzer Control ...............................
  • Page 8 MY-A Series (10kVA-20kVA) UPS Contents User Manual 6.7 Troubleshooting .............................. 90 6.7.1 Common Fault ............................90 7 Package, Transportation and Storage ..................95 7.1 Package ................................95 7.2 Transportation ..............................95 7.3 Storage ................................95 A Technical Specifications ......................96...

  • Page 9: Safety Description

    MY-A Series (10kVA-20kVA) UPS User Manual 1 Safety Description 1 Safety Description This chapter introduces the safety announcements. Prior to performing any work on the UPS, please read the user manual carefully to avoid human injury and device damage by irregular operations.

  • Page 10: Use Announcements For Battery

    MY-A Series (10kVA-20kVA) UPS 1 Safety Description User Manual The UPS is class C3 device. If it is used in residential purpose, it may cause wireless interference. User should take actions to avoid the interference.  No liquid or other objects are allowed to enter the UPS.

  • Page 11: Anti-Static Protection

    MY-A Series (10kVA-20kVA) UPS User Manual 1 Safety Description 1.1.3 Anti-Static Protection The static generated by human bodies may damage the electrostatic-sensitive components on PCB. Before touching the sensitive component, please wear anti-static rings and well connect the other end of the anti-static rings to ground.
  • Page 12 MY-A Series (10kVA-20kVA) UPS 1 Safety Description User Manual  Put the UPS in the flat floor without vibration and the vertical gradient is less than 5° . Keep good ventilation around the UPS. The clearance between the rear or the side of UPS and adjacent devices or wall should be at least 300mm~500mm.

  • Page 13: Overview

    This chapter mainly introduces the UPS's model meaning, features, structure, work principle, etc. 2.1 Product Intro MY-A series UPS is whole high frequency, pure online, double-conversion, smart product. The system is perfect power security for file server, enterprise server, center server, micro-computer, concentrator, telecom system, data center and others that require high quality power protection.

  • Page 14: Features

    MY-A Series (10kVA-20kVA) UPS 2 Overview User Manual 2.1.2 Features Completely digitalized smart control The UPS can monitor the grid frequency (50Hz/60Hz) and self-adapt the frequency. The output voltage can be set to 110V/115V/120V/127V, which makes the use more flexible.

  • Page 15: Appearance

    MY-A Series (10kVA-20kVA) UPS User Manual 2 Overview 2.1.3 Appearance Figure2-2 Appearance UPS has two types of operation panels, touch screen and LCD screen (optional). In this manual, we take the touch screen model as an example to illustrate. Operation panel ...
  • Page 16 MY-A Series (10kVA-20kVA) UPS 2 Overview User Manual Table2-1 Illustration for touch screen operation panel Name Illustration Illustration for operation panel ○ Shows the working status and system setting. Touch screen display On (green): rectifier works normally; ○ AC/DC indicator On (red): rectifier abnormal.
  • Page 17 MY-A Series (10kVA-20kVA) UPS User Manual 2 Overview Table2-2 Illustration for LCD operation panel Name Illustration Illustration for operation panel ○ Shows the working status and system setting. LCD screen display " " page down button ○ and power off LED Short press "...
  • Page 18 MY-A Series (10kVA-20kVA) UPS 2 Overview User Manual Rear panel Figure2-5 Structure of 10kVA rear panel Figure2-6 Structure of 15kVA/20kVA rear panel...

  • Page 19: Communication

    MY-A Series (10kVA-20kVA) UPS User Manual 2 Overview When the UPS connect to external battery, 10kVA models can be directly connected to external battery through wiring terminal bar; 15kVA/20kVA models are connected to external battery port, and corresponding extension battery wiring assembly shall be selected.
  • Page 20 MY-A Series (10kVA-20kVA) UPS 2 Overview User Manual Table2-4 Communication method correspondence with hardware port Communication way Sketch map Communication port Parallel kit Parallel port SNMP card Slot 1 RS485+relay card (optional) Protocol transfer kit (optional) Slot 2 (choose any one)
  • Page 21 MY-A Series (10kVA-20kVA) UPS User Manual 2 Overview Table2-5 The corresponding pin relationship of RS485 port between of UPS and PC RS485 port of UPS RS485 port of PC A (+) B (-) The standard RS485 communication ports of rear panel cannot communicate normally when slot 2 uses optional communication card.
  • Page 22 MY-A Series (10kVA-20kVA) UPS 2 Overview User Manual Silk-screen Function illustration Remarks COM: common Trigger action when signal is valid: NO and port. COM is connect, which disconnect with NC. OUT.2 The signal is settable and refers to the note for detail.
  • Page 23 MY-A Series (10kVA-20kVA) UPS User Manual 2 Overview Input dry contact port of EPO must be short circuit, UPS can work normally. If EPO port is disconnected, UPS shutdown all output of inverter and bypass, meanwhile the display screens report EPO fault. UPS will be release this fault after UPS shutdown totally and this port restoring short circuit.
  • Page 24 MY-A Series (10kVA-20kVA) UPS 2 Overview User Manual Table2-8 The settable item and illustrations of output dry contact Item Illustration When mains grid is abnormal, the signal is valid and triggers Mains abnormal action of dry contact. When bypass is abnormal, the signal is valid and triggers action of Bypass abnormal dry contact.
  • Page 25 MY-A Series (10kVA-20kVA) UPS User Manual 2 Overview Parallel port The parallel card has been built-in the parallel port, which is used in single mode by default, and the parallel mode was set to single mode at touch screen. If parallel operation is required, please set the device to the corresponding parallel mode, such as redundancy or expand.

  • Page 26: Fittings Illustration

    MY-A Series (10kVA-20kVA) UPS 2 Overview User Manual 2.1.5 Fittings Illustration Each UPS standard with three short circuit wire which the length is 200mm and users can short-circuit the mains input and bypass by it. The installation position is as shown in 3.5.1 UPS Wiring Operation.

  • Page 27: Work Mode

    MY-A Series (10kVA-20kVA) UPS User Manual 2 Overview Maintenance bypass Bypass static switch Bypass input Rectifier Inverter Output Mains input Charge Discharge Battery input Figure2-8 Work principle diagram The MY series UPS includes rectifier/PFC, inverter, charger, bypass static switch etc function module, the input power includes mains input, bypass input, battery input, the output mode includes inverter output, bypass output and maintenance bypass output (if equipped).
  • Page 28 MY-A Series (10kVA-20kVA) UPS 2 Overview User Manual Maintenance bypass Bypass static switch Bypass input Rectifier Inverter Output Mains input Charge Discharge Battery input Figure2-9 Normal mains power supply mode (the thick solid line stands for the energy flow direction)
  • Page 29 MY-A Series (10kVA-20kVA) UPS User Manual 2 Overview mains power supply mode. If the mains always abnormal and the battery is running up, the UPS will send sound and light alarm and stop working till battery low-voltage point. At that time, the buzzer long beeps to alarm, the power for load powers down.
  • Page 30 MY-A Series (10kVA-20kVA) UPS 2 Overview User Manual Maintenance bypass power supply mode When the UPS needs to be maintained and the power supply for load cannot be interrupted, user can shut down the inverter and make the UPS works in bypass status, the gate controlled switch release automatically when open the maintenance bypass cover plate, then switch on the maintenance bypass breaker and switch off the mains input breaker and bypass input breaker, output breaker.

  • Page 31: Installation

    MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation 3 Installation This chapter mainly introduces the installation of the UPS, including unpacking and checking, cable selection, installation, electrical connection, etc. 3.1 Announcements  The installation tools should be with isolated operation, which is to avoid electric shock.

  • Page 32: Install Environment

    MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual Tools 3.2.2 Install Environment The installation environment of the UPS should be with good ventilation, and far away from water source, heat source and inflammable and explosive objects. Avoid installing the UPS in the place where has direct sunshine, dust, volatile gas, corrosive objects or high salt.

  • Page 33: Select Input Breaker

    MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation shows the min. recommended wire cross-sectional area. Select the wires and breakers according to Table3-1 to Table3-5. Table3-1 UPS max. steady state phase current Type 10kVA 15kVA 20kVA AC input (A) 35.5 65.7...

  • Page 34: Select Wires

    MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual 3.2.6 Select Wires When the cross-sectional area of single wire is greater than 25mm , it is recommended to connect two wires in parallel. For the wire cross-sectional area of AC input, output and battery please see the recommended value in Table3-3.

  • Page 35: Transport And Unpacking

    MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation Figure3-1 Dimensions of wiring terminal Table3-5 Dimensions limit of wiring terminal Dimensions (unit: mm) 10kVA/15kVA/20kVA ≤14.5 ≥4 ≤7.15 The equipped wires by our company are all passed the national standard or UL certification, the quality is perfect and meets the requirements of safety standard.

  • Page 36: Unpacking

    MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual Figure3-2 Forklift transportation Figure3-3 Manual forklift transportation During transporting, please take care and avoid impact or falling off. During moving, keep the UPS vertical and do not put down or uplift suddenly.

  • Page 37: Mechanical Installation

    MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation  Compare with the packing list and check if the fittings are complete and proper. If the fittings lack or model wrong, please take note and contact the local agency of our company.
  • Page 38 MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual Figure3-5 Outer dimensions (unit: mm) Drill 4φ10 holes on the ground by impact drill according to the installation holes size of pedestal, as Step 2 shown in Figure3-6 (drilling deviation ± 2mm). Install expansion bolts M8. The structure and installation for the expansion bolt is as shown in Figure3-7.
  • Page 39 MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation Bolt 1. Drill holes on the installation ground by hammer drill. Spring gasket Flat gasket 2. Tighten the expansion bolts mildly, and put it to the hole vertically, and then knock the expansion bolt by rubber hammer till all the expansion tube into the hole.

  • Page 40: Electrical Connection

    MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual ----End 3.5 Electrical Connection Before connecting, ensure that the rear breakers of mains, battery are all open. DO NOT connect wires with electricity. While wiring, avoid making the power wire at the place where is easy to be trod or tripped.
  • Page 41 MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation Figure3-10 Wiring terminal silk-screen of 10kVA Three-phase identify methods adoption A, B, C. Corresponding to U phase, V phase and W phase or R phase, S phase and T phase.  Wiring method one: Different input sources for mains and bypass.
  • Page 42 MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual Figure3-12 Wiring diagram 2 of 10kVA Please pay attention to the wiring safety when MY10-AS is wiring. DO NOT touch the battery terminal bar unless connecting with external battery! UPS wiring must be strictly in accordance with Figure3-11 or Figure3-12 to avoid short circuit.
  • Page 43 MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation There is a fan on the rear plate of the MY10-AT, avoid blocking the air vents when fixing the wires. If you need to connect an external battery, please fix the battery wires with other wires at the bottom of device through cable tie after the external battery wiring was done.
  • Page 44 MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual Three-phase identify methods adoption A, B, C. Corresponding to U phase, V phase and W phase or R phase, S phase and T phase.  Wiring method one: Different input sources for mains and bypass.

  • Page 45: Wiring Between Ups And External Battery

    MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation Please pay attention to the wiring safety when the MY15-AS/MY20-AS is wiring. DO NOT dismantle the cover plate of external battery port unless connecting with battery. UPS wiring must be strictly in accordance with Figure3-16 or Figure3-17 to avoid short circuit.
  • Page 46 MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual This series UPS's battery input adapt positive and negative battery group (battery group has 8~10 positive cell and corresponding negative cell, which 12V/cell, default has 10 positive cell and corresponding negative cell).
  • Page 47 MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation 15kVA/20kVA NO.11 NO.12 NO.13 NO.20 breaker 1 BATT. - …… BATT. N NO.1 NO.2 NO.3 NO.10 …… BATT. + breaker 2 BATT. - BATT. N BATT. + Figure3-20 Wiring diagram 1 of 15kVA/20kVA...
  • Page 48 MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual NO.11 NO.12 NO.13 NO.20 breaker 1 BATT. - …… BATT. N NO.1 NO.2 NO.3 NO.10 …… BATT. + NO.11 NO.12 NO.13 NO.20 breaker 2 BATT. - …… BATT. N NO.1 NO.2 NO.3 NO.10...

  • Page 49: Wiring Of Parallel System

    MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation Figure3-22 Extension battery wiring assembly of 15kVA/20kVA The external battery wiring of 10kVA don't need the extension battery wiring assembly, it is connecting to wiring terminal bar directly. 3.5.3 Wiring of Parallel System Step 1 Install the battery and UPS of parallel system separately according to 3.4 Mechanical Installation.
  • Page 50 MY-A Series (10kVA-20kVA) UPS 3 Installation User Manual  15kVA/20kVA UPS 1 UPS 2 INPUT BYPASS OUTPUT INPUT BYPASS OUTPUT EXTERNAL EXTERNAL EXTERNAL EXTERNAL BATTERY BATTERY BATTERY BATTERY CABINET 1 CABINET 2 CABINET 1 CABINET 2 DC breaker 1 DC breaker 2...
  • Page 51 MY-A Series (10kVA-20kVA) UPS User Manual 3 Installation Connect the parallel ports of each device in parallel system by equipped parallel wires. The two RJ45 parallel ports are the same, they are redundancies and backup for each other to increase the reliability of the system.

  • Page 52: Touch Screen Operation

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual 4 Touch Screen Operation In the touch screen, user can scan input parameter, output parameter, load parameter, battery parameter, get UPS status and warning information and perform relative setting. Besides, it also can query event log for fault diagnosis.
  • Page 53 MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Bypass Voltage\Current\Frequency Information Mains Voltage\Current\Frequency Informaiton Main Page Battery Voltage\Charge current\Discharge current\Remaining capacity\Remaining Information time\Battery status Output Voltage\Current\Active power\Apparent power\Load\frequency Information Login Run Info. Mains status\Bypass status\Inner temperature History Record...

  • Page 54: Main Page

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual 4.2 Main Page After powering on, the touch screen will enter initialize. Then will enter system monitoring main page after powering on, as shown in Figure4-2. Figure4-2 Main page 4.2.1 Icon Meaning In the main page, it shows the topological structure of UPS.

  • Page 55: Working Status

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation : Output information. When output is abnormal, the icon will be on and show in red. 4.2.2 Working Status There are six main working statuses: without energy transmission status, mains inverting status, battery inverting status, bypass output status, ECO output and maintenance bypass output status.
  • Page 56 MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-5 Mains abnormal, battery inverting status Figure4-6 Bypass output status...

  • Page 57: Bypass Information Page

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-7 ECO status Figure4-8 Maintenance bypass output status 4.2.3 Bypass Information Page On main page, click " " icon, it will enter the bypass information page, as shown in Figure4-9.

  • Page 58: Mains Informaiton Page

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-9 Bypass information page 4.2.4 Mains Informaiton Page In the main page, click " " icon, it will enter the mains information page, as shown in Figure4-10. Figure4-10 Mains information page 4.2.5 Battery Information Page...

  • Page 59: Output Information Page

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation floating charge. Besides, the page also includes the battery remaining time capacity and remaining time, etc. as shown in Figure4-11. Figure4-11 Battery information page 4.2.6 Output Information Page In the main page, click "...

  • Page 60: Login Page

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual 4.3 Login Page In the main page, click " " icon, it will enter the login page, as shown in Figure4-13. Only login, the setting management can be done. Figure4-13 Login page The password for common user is 111, the password for administrator is 222.

  • Page 61: Run Information Page

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-14 Information management page 4.4.1 Run Information Page In the information management page, click the run info icon, it will enter the run information page, as shown in Figure4-15 to Figure4-18. The page shows the UPS current status, including mains status, bypass status, battery status, output status, load status, rectifier status, inverter status, work mode, input loop, bypass loop, battery loop, fan status, inner temperature.
  • Page 62 MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-16 Working status page 2 (single UPS) Figure4-17 Working status page 1 (parallel UPS)

  • Page 63: History Record Page

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-18 Working status page 2 (parallel UPS) 4.4.2 History Record Page In the information management page, click event log icon, it will enter the history record page, as shown in Figure4-19. The page shows the fault and alarm information, and they are listed on the basis of time.

  • Page 64: Device Infomation Page

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual range setting, bypass voltage setting, etc. The user log is listed on the basis of time. The first record is the latest operation record. Figure4-20 User log page 4.4.4 Device Infomation Page In the information management page, click the device information icon, it will enter the device information page, as shown in Figure4-21 and Figure4-22.

  • Page 65: Setting Management Page

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-22 Device information page 2 4.5 Setting Management Page In the main page, after login, click " " icon, it will enter the setting management page, as shown in Figure4-23. The page includes: system manage, battery manage, battery test, log manage, communication setting, screen setting, dedust setting and password setting.
  • Page 66 MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-24 System manage page 1 of output set Figure4-25 System manage page 2 of bypass set...
  • Page 67 MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-26 System management page 3 of ECO set Table4-1 Setting description for system mange Item Settable value 110V, 115V, 120V, 127V Output voltage (V) Output frequency (Hz) 50Hz, 60Hz -5~ +5 Output voltage adjustment (V) Max.

  • Page 68: Battery Management Page

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-27 Successful setting Figure4-28 Unsuccessful setting 4.5.2 Battery Management Page Battery manage page includes equalizing charge voltage, floating charge voltage, charge current, battery test ending voltage, low-voltage warning, low-voltage protection, temperature compensation coefficient, force equalizing charge.
  • Page 69 MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-29 Battery set page 1 of battery management Figure4-30 Battery set page 2 of battery management...
  • Page 70 MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-31 Charge set page 1 of battery management Figure4-32 Charge set page 2 of battery management Table4-2 Setting description for battery mange page Item Settable value Battery type Lead-acid Battery capacity (Ah)

  • Page 71: Battery Test Page

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Item Settable value Battery static time (day) 1~30 Battery static delay time (h) 1~48 On, Off Battery backup function Single battery low-voltage protection (V/Cell) 1.667~1.867 Single battery test ending voltage (V/Cell) 1.667~1.867...

  • Page 72: Dry Contact Page

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-33 Battery test page 4.5.4 Dry Contact Page In setting manage page, click Dry Contact icon, it will enter dry contact setting page, as shown in Figure4-34 and Figure4-37. The dry contact setting is the same, below we take dry contact 1 as an example to illustrate.
  • Page 73 MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-34 Input dry contact setting page 1 Figure4-35 Input dry contact setting page 2 Output dry contact On Dry contact page, click " " icon, it will enter corresponding dry contact setting page, as shown in Figure4-37.

  • Page 74: Hmi Setting Page

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-36 Output dry contact setting page 1 Figure4-37 Output dry contact setting page 2 4.5.5 HMI Setting Page In screen setting page, user can set the date, time, language, backlight and screen saver, as shown in...

  • Page 75: Password Setting Page

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-38 Screen setting page 4.5.6 Password Setting Page In setting management page, click password setting icon, it will enter the password setting page, as shown in Figure4-39. Figure4-39 Password setting page 4.5.7 Device Configuration Page...
  • Page 76 MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-40 Mode set page 1 of device configuration Figure4-41 Mode set page 2 of device configuration...
  • Page 77 MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-42 Mode set page 3 of device configuration Figure4-43 Other set page of device configuration Table4-3 Setting description for battery mange page Item Settable value Short circuit duration time (ms)

  • Page 78: Dedust Setting Page

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Item Settable value Redundant, Single, Expand, BSC Parallel mode Parallel UPS ID On, Off Frequency converter function Frequency converter frequency 50, 60 Self-start when power on UPS will not turn off, On, Off...

  • Page 79: Record Manage Page

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-44 Dedust set page 4.5.9 Record Manage Page Reco. mange page can export and clear the history log, user log, and wave capture. Click " " button, you can export the selected items by USB flash drive, click the "...

  • Page 80: Current Fault Page

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-46 Prompting for clearing log Figure4-47 The U dish is not inserted 4.6 Current Fault Page When the UPS is fault, the " " icon at the left will light on, as shown in Figure4-48. Click it, the...

  • Page 81: Buzzer Control

    MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-48 Fault alarm status Figure4-49 Current fault information 4.7 Buzzer Control When the UPS fault, the buzzer icon will light on. Click the " " icon, the buzzer can be muted or...

  • Page 82: On\Off Operation

    MY-A Series (10kVA-20kVA) UPS 4 Touch Screen Operation User Manual Figure4-50 Buzzer mute status The buzzer cannot be muted when it long beep. 4.8 ON\OFF Operation In main page, click " " icon, the UPS can be started or shutdown. When the UPS is shutdown, click the icon, it will show “confirm to power on?”, when the UPS is started, it will show “confirm to...
  • Page 83 MY-A Series (10kVA-20kVA) UPS User Manual 4 Touch Screen Operation Figure4-52 Confirm to turn off page...

  • Page 84: Lcd Screen Operation

    MY-A Series (10kVA-20kVA) UPS 5 LCD Screen Operation User Manual 5 LCD Screen Operation This chapter mainly introduces the working parameters, working status and system settings of UPS LCD screen. 5.1 Menu Hierarchy The menu hierarchy of the LCD is as shown in Figure5-1.

  • Page 85: Main Page

    MY-A Series (10kVA-20kVA) UPS User Manual 5 LCD Screen Operation 5.2 Main Page After the UPS is powered on, it will enter the system monitoring main interface, as shown in Figure5-2, the interface default display energy flow chart. Figure5-2 Main page After entering the main interface, it is easy to monitor the system.
  • Page 86 MY-A Series (10kVA-20kVA) UPS 5 LCD Screen Operation User Manual Figure5-3 Main power inverter output Figure5-4 Battery inverter output Figure5-5 ECO/Bypass output Figure5-6 Maintenance bypass output...

  • Page 87: Monitoring Page

    MY-A Series (10kVA-20kVA) UPS User Manual 5 LCD Screen Operation 5.4 Monitoring Page After the system automatically enters the monitoring page, the monitoring page in the lower right corner shows page number. The total number of monitoring pages displayed is changes depending on the current set of different system mode.

  • Page 88: Parameter Setting

    MY-A Series (10kVA-20kVA) UPS 5 LCD Screen Operation User Manual 5.5.1 Parameter Setting In the settings management page, select the "Parameter Set" option, and short press the " " button shortly to enter the parameter settings page, which is a second class page, mainly for the directory display function, the page display includes: bypass parameter settings, battery parameter settings and output parameter setting three, as shown in Figure5-9 and Figure5-10.

  • Page 89: Function Setting

    MY-A Series (10kVA-20kVA) UPS User Manual 5 LCD Screen Operation to the previous level of the page, and the previews class parameter settings page is the settings management page. There are four next level pages on the parameter settings page, one bypass parameter settings page, two battery parameter settings pages, and one output parameter settings page.
  • Page 90 MY-A Series (10kVA-20kVA) UPS 5 LCD Screen Operation User Manual On the battery test page, you can select the options by short pressing the up/down page button, and after selecting "Standard Test", you can enter the settings for the standard test by short pressing the "...

  • Page 91: Log Management

    MY-A Series (10kVA-20kVA) UPS User Manual 5 LCD Screen Operation 5.5.3 Log Management In the Settings management page, select the "Log Management" option and short press the " " button to enter the log management page, the page main display is history query and customized parameters (the actual parameters display should be based on the LCD of the product).

  • Page 92: Permission Setting

    MY-A Series (10kVA-20kVA) UPS 5 LCD Screen Operation User Manual 5.5.5 Permission Setting In the Settings management page, select "Permission" option to enter the password entry page first, as shown in Figure5-14. Figure5-14 Password input page By short pressing the up/down page button to achieve page option selection, when selecting the lower...
  • Page 93 MY-A Series (10kVA-20kVA) UPS User Manual 5 LCD Screen Operation Figure5-16 Permission setting page 2 The permission set page includes trial function and trial time two setting items, and the trial time will not be displayed until the trial function is turned on. By pressing the up/down page button and working with the function button's short press operation, you can set the trial function and the trial time, the setting method is the same as the other settings mentioned above, and it is not repeated here.

  • Page 94: Use And Operation

    MY-A Series (10kVA-20kVA) UPS 6 Use and Operation User Manual 6 Use and Operation This chapter mainly describes the operation process, operation method, daily maintenance and troubleshooting, etc. 6.1 Check Before Startup  Check if the wire connection is firm and the color of AC wires is in accordance with the specification.

  • Page 95: Shutdown Operation

    MY-A Series (10kVA-20kVA) UPS User Manual 6 Use and Operation Start load according to "high power device→small power device", which is to avoid overload protection when starting high power device. ----End 6.3 Shutdown Operation Step 1 Close load and keep the UPS running without load for about 10min to exhaust heat.

  • Page 96: Shut Down Parallel System

    MY-A Series (10kVA-20kVA) UPS 6 Use and Operation User Manual breaker of paralleled UPS, measure the circulating current of parallel UPS, and the current should be less than 3A. When the voltage different larger than 8V, measure the output voltage of the UPS and check if the output are all 120V, if the voltage different larger than 15V, please report it to our company to maintain it.

  • Page 97: Redundance Function Of Parallel System

    MY-A Series (10kVA-20kVA) UPS User Manual 6 Use and Operation 6.4.4 Redundance Function of Parallel System When system adopts N+1 redundance design, the total output cannot larger than N times of single UPS's rated power. When one paralleled UPS fault, it can put into use or exit parallel system and do not affect the operation of system, which enhance the system reliability.

  • Page 98: Troubleshooting

    MY-A Series (10kVA-20kVA) UPS 6 Use and Operation User Manual  Generally, the working life of battery is 3 to 5 years. If battery is not so good, replace it in time. The battery replacement should be performed by authorized professional.
  • Page 99 MY-A Series (10kVA-20kVA) UPS User Manual 6 Use and Operation Fault phenomenon Possible reason normal; UPS over-temperature protection. Check if the air inlet and air outlet of UPS is blocked or the working temperature of UPS is beyond the allowable range.
  • Page 100 MY-A Series (10kVA-20kVA) UPS 6 Use and Operation User Manual Fault symbol Buzzer status Meaning Voltage The UPS of the output voltage in the parallel does Long beep mismatch not match the actual system. Frequency The UPS of the frequency in the parallel does not...
  • Page 101 MY-A Series (10kVA-20kVA) UPS User Manual 6 Use and Operation Fault symbol Buzzer status Meaning 2.0s) system works. UPS internal communication abnormal, if the SCI fault Long beep continuous alarm cannot be restored, please report repair promptly. Slow beep The total output load of the UPS parallel system...
  • Page 102 MY-A Series (10kVA-20kVA) UPS 6 Use and Operation User Manual Fault symbol Buzzer status Meaning No buzzer The battery charging temperature is too high. warning Urgent beep Rectifier (alarm once UPS rectifier fault. abnormal about every 0.2s) Inverter Long beep UPS inverter fault.

  • Page 103: Package, Transportation And Storage

    MY-A Series (10kVA-20kVA) UPS User Manual 7 Package, Transportation and Storage 7 Package, Transportation and Storage 7.1 Package During packing, please pay attention to the place direction requirements. At the side of the package, there is afraid of wet, handle with care, upward, etc. alarm marks. And also, the device model is printed on the package.

  • Page 104: A Technical Specifications

    MY-A Series (10kVA-20kVA) UPS A Technical Specifications User Manual Technical Specifications Model 10kVA 15kVA 20kVA Index Input mode 3W+N+PE When the input voltage in the range of 90~155, the UPS can bear load of 100% rated power; Voltage range (Vac)
  • Page 105 MY-A Series (10kVA-20kVA) UPS User Manual A Technical Specifications Model 10kVA 15kVA 20kVA Index L-N: 110/115/120/127 (default is 120); Voltage (Vac) L-L: 190/200/208/220 (default is 208) When mains is normal, it tracks the bypass input frequency; Frequency (Hz) When mains is abnormal, it tracks the frequency of 50± 0.1 or 60±...
  • Page 106 MY-A Series (10kVA-20kVA) UPS A Technical Specifications User Manual Model 10kVA 15kVA 20kVA Index Alarm for battery low-voltage, mains abnormal, UPS fault, Alarm function output overload, etc. Protection for battery under-voltage, overload, short-circuit, Protection function over-temperature, input over-voltage, communication abnormal, etc.

  • Page 107: B Acronyms And Abbreviations

    MY-A Series (10kVA-20kVA) UPS User Manual B Acronyms and Abbreviations Acronyms and Abbreviations Alternating Current Bypass Maintain Detection Battery Breaker Direct Current Economic Operation Model Emergency Power Off Liquid Crystal Display...
  • Page 108 MY-A Series (10kVA-20kVA) UPS B Acronyms and Abbreviations User Manual Maintenance Bypass Breaker Protective Earthing Recommend Standard485 RS485 Simple Network Management Protocol SNMP Uninterruptible Power System...
  • Page 109 4402-03311 002...

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