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UPS Protection System

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TOSHIBA 7.0 UPS Protection System 7.1 System Protection Features The preceding one-line schematic illustrates the electrical locations of the protection devices on all UPS models. Input Power Input Abnormal MBS Isolating XFMR MCCB Bypass Converter Inverter Overcurrent Low Batteryt Charger/ Chopper External Batteries Overcurrent Overload Output Power Overvoltage/ Undervoltage 7.2 System Protection Functions The following chart shows the built-in UPS fault protection functions on all models. Protection Item LCD Message Cause Operation Mode after Fault Audible Alarm Visible Alarm Relay Contact Alarm Auto-Retransfer Built-in UPS Fault Protection Functions Inverter Over-voltage Inverter Under-voltage (IVOV) (IVUV) UPS Overload INVERTER OVERVOLTAGE INVERTER UNDERVOLTAGE OUTPUT OVERLOAD Control Malfunction; Feedback Error Overload or short circuit at the load. Bypass Operation; Chopper and Inverter Stopped Inverter Overload: Transfer to bypass; Inverter stopped. Bypass Overload: Inverter, Chopper, and Bypass stopped. Yes: See Audible Alarm Functions Red Fault Lamp "on" Inverter OL: No Fault Lamp Bypass OL: Fault Lamp "on" Fault Relay closed; Bypass Relay closed Inverter OL: Bypass Relay closed Bypass OL: Bypass Relay open and Fault relay closed No Inverter OL: Yes, if bypass ok Bypass OL: No Protection Item LCD Message Cause Operation Mode after Fault Audible Alarm Visible Alarm Relay Contact Alarm Auto-Retransfer Low Battery Voltage (Level-1) Low Battery Voltage (Level-2) Inverter Output Current Limit Line-4 will read "BATTERY LOW" DC UNDERVOLTAGE OUTPUT OVERLOAD Battery Discharge Battery Shutdown Level reached Load Inrush current Battery Discharge Shutdown: No Output If Bypass ok, transfer to bypass; if not, current-limit mode Yes: See Audible Alarm Functions Battery Lamp Flickers NO NO Low Battery Relay closed Bypass Relay closed No Yes, if bypass ok 4200FA CT/XT User's Manual 60

Section	Page
TABLE OF CONTENTS	3
1.0 Product Description	15
1.1 Theory of Operation	15
1.2 Application and Use	15
1.3 Power Backup	15
1.4 Power Conditioning	15
2.0 Unpacking/Inspection/Storage/Disposal	16
2.1 Unpacking the new UPS equipment 15/25/30 kVA:	16
2.2 Unpacking the new UPS equipment 50 kVA:	17
2.3 Inspection of the new UPS equipment	17
2.4 Storage of UPS equipment	18
2.5 Disposal	18
3.0 Installation Precautions	19
3.1 Equipment Placement	19
3.2 System Preparation (Pre-Power)	20
3.3 Operating Precautions	20
4.0 UPS Connections	21
4.1 Power Connections	21
4.1.1 Power Connections 15/25/30 kVA with Internal Batteries	21
4.1.2 Power Connections 15/25/30 kVA with Internal Transformer	22
4.1.3 Recommended Wire Size and Torque Requirements	23
4.1.4 Power Connection Cable Routing and Conduit Placement 15/25/30 kVA	24
	25
4.2 Control Circuit and External Battery Interface Connections 15/25/30 kvA	25
	25
4.2.1 Recommended Wire Size and Torque Requirements	25
4.3 Power Connections 50 kVA	26
4.3.1 Recommended Wire Size and Torque Requirements For UPS Input and Output Terminals	27
	27
4.3.2 Power Connection Cable Routing and Conduit Placement 50 kVA	28
4.4 Control Circuit and External Interface Connections 50 kVA	29
4.4.1 Recommended Wire Size and Torque Requirements	29
4.5 Communication Interface	30
4.5.1 Remote Contact	30
4.5.2 RS-232C	31
4.5.3 UPS Shutdown (via RS-232C)	31
5.0 Specifications	32
5.1 4200FA 15 / 25 kVA @ 208 VAC Input/ 208 VAC Output w/Internal Batteries	32
5.2 4200FA 15/25 kVA w/Internal Transformer	33
5.3 4200FA 30 kVA @ 208 VAC Input/ 208 VAC Output w/Internal Batteries	34
5.4 4200FA 30 kVA w/Internal Transformer	35
5.5 4200FA 50kVA @ 208 VAC Input/ 208 VAC Output w/Internal Batteries	36
5.6 4200FA 50kVA w/Internal Transformer	37
6.0 Operating the UPS	38
6.1 AC Input Mode (Normal Operation)	38
6.2 Bypass Mode	39
6.4 Battery Backup Mode	40
6.5 Battery Backup Time and Discharge Process	41
6.6 Battery Low Voltage Tolerances	41
6.7 Battery Recharging	42
6.8 Front Panel Layout (All Units)	43
6.9 EPO (Emergency Power Off) Function	43
6.10 Audible Alarm Functions	44
6.11 LED (Light Emitting Diode) Functions	44
6.11.1 LED (Light Emitting Diode) System Status	45
6.12 LCD (Liquid Crystal Display) Functions	45
6.12.1 Line-1 System Messages	45
6.12.2 Line-2 System Fault Messages	46
6.12.3 Line-3 System Messages	46
6.12.4 Line-4 System Messages	46
6.13 Initial Battery Charge	47
6.14 Start-up Procedure	48
6.15 Shutdown Procedure	49
6.16 Maintenance Bypass Procedure	49
6.17 Keypad Overview	51
6.18 Key Functions	52
6.18.1 MONI	52
6.18.2 IN	52
6.18.3 OUT	52
6.18.4 BATT Key	53
6.18.5 MENU, F1, ENTER, UP, & DOWN Keys	53
6.18.6 BATT TEST Key	53
6.18.7 BUZZ STOP Key	54
6.18.8 RESET Key	54
6.19 Menu Data Screens	55
6.19.1 Settings for Calendar and Clock	55
6.19.2 Adjusting the Buzzer Volume	55
6.19.3 Settings for Display Duration	55
6.19.4 Run Switch Select	56
6.19.5 Serial Com Station Address	56
6.19.6 Output Voltage Adjustment	57
6.19.7 Equalize Charge Mode Select	57
6.19.8 Reset to Default Settings	58
6.20 Overload Operation	58
6.21 Backup History and Fault History	59
7.0 UPS Protection System	61
7.1 System Protection Features	61
7.2 System Protection Functions	61
8.0 Start-up/Scheduled Maintenance/Part Replacement	62
8.1 Start-up	62
8.2 Preventive Maintenance	62
8.3 Parts Replacement	63
9.0 External Dimensions / Shipping Dimensions / Weights	64
9.1 External Dimensions 15/25/30 kVA	64
9.2 External Dimensions 50kVA	65

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TOSHIBA

7.0 UPS Protection System

7.1

System Protection Features

The preceding one-line schematic illustrates the electrical locations of the protection

devices on all UPS models.

Converter

Inverter

Bypass

Charger/

Chopper

Isolating

XFMR

External

Batteries

Output

Power

MCCB

MBS

Input

Power

Overcurrent

Low Batteryt

Input Abnormal

Overcurrent

Overload

Overvoltage/

Undervoltage

7.2

System Protection Functions

The following chart shows the built-in UPS fault protection functions on all models.

Built-in UPS Fault Protection Functions

Protection Item

Inverter Over-voltage

(IVOV)

Inverter Under-voltage

(IVUV)

UPS Overload

LCD Message

INVERTER

OVERVOLTAGE

INVERTER

UNDERVOLTAGE

OUTPUT OVERLOAD

Cause

Control Malfunction; Feedback Error

Overload or short circuit at the load.

Operation Mode

after Fault

Bypass Operation; Chopper and Inverter Stopped

Inverter Overload: Transfer to bypass; Inverter

stopped.

Bypass Overload: Inverter, Chopper, and Bypass

stopped.

Audible Alarm

Yes: See Audible Alarm Functions

Visible Alarm

Red Fault Lamp “on”

Inverter OL: No Fault Lamp

Bypass OL: Fault Lamp “on”

Relay Contact

Alarm

Fault Relay closed; Bypass Relay closed

Inverter OL: Bypass Relay closed

Bypass OL: Bypass Relay open and Fault relay

closed

Auto-Retransfer

Inverter OL: Yes, if bypass ok

Bypass OL: No

Protection Item

Low Battery Voltage

(Level-1)

Low Battery Voltage

(Level-2)

Inverter Output Current Limit

LCD Message

Line-4 will read

“BATTERY LOW”

DC UNDERVOLTAGE

OUTPUT OVERLOAD

Cause

Battery Discharge

Battery Shutdown Level

reached

Load Inrush current

Operation Mode

after Fault

Battery Discharge

Shutdown:

If Bypass ok, transfer to bypass; if not, current-limit

mode

No Output

Audible Alarm

Yes: See Audible Alarm Functions

Visible Alarm

Battery Lamp Flickers

Relay Contact

Alarm

Low Battery Relay

closed

Bypass Relay closed

Auto-Retransfer

Yes, if bypass ok

4200FA CT/XT User’s Manual