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1

GP1 UPS Info

Toshiba G9000

2

GP1 UPS Size

750kW

3

# of UPS at GP1

6 UPS 3 on each leg

4

GP1 - UPS Power Design Load

2000kW Total 1000kW on each leg

5

GP1 UPS Type

IGBT Double conversion

6

GP1 UPS Voltage

480v in 480v out

7

GP1 - # of battery strings on each UPS

3 strings of 40 batteries there are 40 batteries in each cabinet There are 4 cabinet for each UPS so there is an empty cabinet for each UPS.

8

GP1 UPS Configuaration

2N (A B) N+1 internally on A or B limited to the UPSs

9

GP1 ATS manufacturer is

GE/Zenith

10

GP1 ATS size

4000 amp 480v

11

GP1 ATS type

Closed transition / bypass

12

GP1 How are the generators started for emergency operation?

ATS which monitors power quality. It watches for any changes that are outside of parameters on all three phases, voltage drops and outages.

13

GP1 ATS type

Closed transition / bypass isolation

14

GP1 How are the generators started for exercising?

The ATS has a schedule built into its control package that will start the generators without a load transfer.

15

How long are the generators exercised?

30 minutes

16

How often are the generators exercised?

every other week

17

How often is maintenance performed on the generators?

Bi-annually. Major and minor.

18

What does major maintenance consist of for a generator?

All of the standard checks, visual etc and fluids. Oil change if necessary, based on the number of operating hours on the generator. Load bank

19

What does minor maintenance consist of for a generator?

Visual inspection, fluids checked and changed if needed.

20

How often is UPS maintenance performed?

Annually.

21

How often are batteries maintained and tested?

Bi-annually

22

How often are batteries maintained and tested?

Bi-annually

23

What does the UPS do when there is a power outage?

It maintains the power load that is currently on it by transferring to battery.

24

GP1 How long can the UPS support the load on battery?

7 minutes at 100% load.

25

Describe the pieces of equipment that power will flow through before it gets to a cabinet. This is pretty standard for all sites with just a few minor differences.

1 - Utility transformer 2- Main disconnect Panel (outside) 3 - Main disconnect breaker (outside) 4 - ATS 5 - Main distribution panel 6 - UPS Supply breaker 7 - UPS 8 - UPS load breaker 9 - Distribution panel 10 - PDU supply breaker in distribution panel 11 - PDU supply breaker in PDU 12 - RPP supply breaker in PDU 13 - RPP panel breaker in RPP 14 - Branch circuit breaker that feeds whip to the cabinet.

26

Describe the pieces of equipment that power will flow through before it gets to a cabinet. This is pretty standard for all sites with just a few minor differences.

1 - Utility transformer 2- Main disconnect Panel (outside) 3 - Main disconnect breaker (outside) 4 - ATS 5 - Main distribution panel 6 - UPS Supply breaker 7 - UPS 8 - UPS load breaker 9 - Distribution panel 10 - PDU supply breaker in distribution panel 11 - PDU supply breaker in PDU 12 - RPP supply breaker in PDU 13 - RPP panel breaker in RPP 14 - Branch circuit breaker that feeds whip to the cabinet.

27

GP1 - PDU manufacturers

PDI Home grown - (transformer and panel type)

28

GP1 PDU size / rating

300 kVA There are two that 150kVA that are PDI Wavestar units.

29

GP1 How many branch circuit panels are on the PDI Wavestar PDUs?

4

30

GP1 What are the feeder breaker ratings for each of the panels on the PDI PDUs?

225 amp

31

What are the typical voltage ratings for all of the PDUs at the data centers?

480v in 208v out

32

Are there any PDUs that are not 480v/208v?

Yes they are in the PayPal cage and are dedicated to PayPal. Voltage ratings are - 480v in 415v out

33

What voltage does PayPal have going to their PDUs in their cabinets?

240v

34

GP1 What is the rating for the outside main disconnect breakers that feed the utility power to the ATS from the transformers?

4000 amps (480v)

35

What does closed transition on an ATS mean?

A closed transition transfer switch (CTTS) is also called a make-before-break transfer switch. With closed transition transfer, the on-site engine generator set is momentarily connected in parallel with the utility source before transferring load back to utility power.

36

What does isolation bypas on an ATS mean?

It allows power to be transferred manually through a bypass switch and the transfer gear be racked out to be replaced or worked on isolated from power.

37

GP1 what is the rating for the UPS supply/feeder breakers?

1200 amps (480v)

38

GP1 What is the rating for the UPS load side breakers?

1200 amps (480v)

39

GP1 What is the rating for the PDU supply/feeder breakers?

450 amps (480v)

40

GP1 What is the rating for the PDU input breaker on the PDU on the supply side of the transformer?

450 amps (480v)

41

GP1 What is the rating for the supply/feeder breaker located in the PDU that feeds the RPP?

400 amps (208v)

42

GP1 Typically, how many RPPs are supplied by a given PDU?

3 RPPs Each RPP is supplied by a 400a 208v breaker which is capable of 146kW at 100% load. Which is also 50% the total capacity of the 300kVA PDU. 50% of the RPP is 73kW or 200a.

43

What is a Static Transfer Switch

A static transfer switch uses power semiconductors such as Silicon-controlled rectifiers (SCRs) to transfer a load between two sources. Because there are no mechanical moving parts, the transfer can be completed rapidly, perhaps within a quarter-cycle of the power frequency. Static transfer switches can be used where reliable and independent sources of power are available, and it is necessary to protect the load from even a few power frequency cycles interruption time, or from any surges or sags in the prime power source.

44

What equipment at the data center has a static transfer switch?

The UPS. The STS on a UPS switches from protected or invertor power to bypass non-protected power. It is what does the switching when you turn on and off the invertor on the UPS. There are separate STS that are available to use for example between PDUs and sometimes are available on a PDU to allow for two different power sources. Only one source can be used at a time and it will switch between sources as needed.

45

Primary roles of a UPS System

The primary role of any UPS is to provide short-term power when the input power source fails. However, most UPS units are also capable in varying degrees of correcting common utility power problems: 1 - Voltage spike or sustained overvoltage 2 - Momentary or sustained reduction in input voltage 3 - Noise, defined as a high frequency transient or oscillation, usually injected into the line by nearby equipment 4 - Instability of the mains frequency 5 - Harmonic distortion, defined as a departure from the ideal sinusoidal waveform expected on the line UPS units are divided into categories based on which of the above problems they address,[dubious – discuss] and some manufacturers categorize their products in accordance with the number of power-related problems they address.

46

PUE

PUE – PUE stands for Power Utilization Effectiveness and is a key measure of efficiency in today’s data center environment. PUE is a ratio that represents a specific data center’s total power requirement (as the numerator), divided by the power requirement for only the IT equipment (as the denominator). The simple formula is a follows: PUE = Total Facility Power Usage/IT Equipment Power Usage. Total facility power includes all the power used by a given center, including lighting, cooling, etc. while IT equipment usage is for server power only. The lower the PUE ratio for a given data center, the more efficient the data center’s power environment, with an obvious correlation to operating cost. While the theoretical optimum PUE is one (meaning no power is used for anything other than the IT equipment in the center), and traditionally, PUEs ran as high as 3.00, the best data centers today have PUEs in the 1.5 range

47

GP1 What is the generator manufacturer?

Cummins

48

GP1 What is the size/rating of the generators?

2250kW (2.25MW) derated to 2000kW do to altitude

49

GP2 - How many UPSs are there?

12 UPS 6 sets of 2 paralleled systems. A B C D E F

50

GP2 What size are the UPSs

750kVA

51

GP2 What is the UPS manufacturer and what model

Toshiba G9000

52

GP2 How many individual power circuits are there that feed the ATSs?

6 A B C D E F

53

GP2. What is the size of the transformers that feed GP2

2500kW

54

What is the voltage that feeds the data centers from the transformers?

480v

55

What is the voltage that is supplied by the utility company that feeds the transformers?

12480v

56

How many power circuits supply the Bluffdale park?

1 It is currently primary metered. 11000kW (11.2MW)

57

GP2 - What is the size/rating of the outside main disconnect breaker?

4000 amps

58

GP2 What is the size/rating of the ATS?

4000 amps

59

GP2 Who is the manufacturer of the ATS

ASCO (Vertiv)

60

GP2 What type of ATS?

Closed transition / bypass isolation

61

GP2 Who is the manufacturer of the generators?

GENERAC

62

GP2 What is the size / rating of the generators?

The Gemini generator consists of 2 paralleled 500kW units which combined make a 1000kW unit.

63

GP2 What is the switch gear called that is outside by the generators against the building.

Generator Parallel Gear or Panel. 5 of the Gemini's and 3 of the ATSs all have load and supply breakers in the panel.

64

GP2 What is the size / rating of the ATS supply breakers in the parallel gear?

4000 amps (480v)

65

What is the generation voltage of the generators?

480v

66

GP2 How many battery strings are on the UPSs?

3 strings of 40 batteries hang off of each UPS.

67

GP2 What it the estimated battery time for the UPSs?

7 minutes at 100% load.

68

GP2 What is the size / rating of the breaker that supplies power to the UPS?

1200 amps (480v)

69

GP2 What is the size / rating of the breaker for the load side of the UPS?

1200 amps (480v)

70

GP2 How many UPS supply breakers are there?

2

71

GP2 How many UPS load side breakers are there?

2

72

What happens to the UPS when you turn off the inverter?

The static bypass switch switches the load to bypass, without any interruption in power.

73

GP2 How do you know that the inverter is running on the UPS?

Insert picture

74

The inverter can operate with the battery breakers open. True or False

False

75

GP1 - What is the maximum % load on any circuit, UPS, PDU, RPP?

50%

76

GP2 What is the maximum load % that can be on any ATS, UPS, and PDU?

66%

77

GP2 What is the maximum load % that can be put on an RPP?

50%

78

GP2 Who is the manufacturer for the CRACs

Liebert (Emerson) now known as Vertiv

79

GP2 What are the ratings for the CRACs

There are two different sizes of CRACs. DSA120 DSA150 The number 120 and 150 is supposed to indicate the amount of cooling or heat rejection in kW.

80

GP1 Who are the CRAC manufacturers?

Data Aire - 19 CRACs part of the original installation and build provided by Facility Gateway (FGC). Liebert (Vertiv) - 5 CRACs DSA120 Liebert System 3 - 1 30 ton older model DX

81

VESDA

Very Early Smoke Detection Alart

82

What type of fire suppression system do we have in the data centers?

Dry pipe - preaction - water

83

Which data centers have VESDA and which don't?

GP1 and GP2 has VESDA CC does not have VESDA

84

PUE

Power Usage Effectiveness

85

DCIE

Data center infrastructure efficiency

86

What is DCIE

Data center infrastructure efficiency (DCIE), is a performance improvement metric used to calculate the energy efficiency of a data center. DCIE is the percentage value derived, by dividing information technology equipment power by total facility power.

87

kW

kilo Watt

88

What is a kW

The kilowatt is equal to one thousand (103) watts. This unit is typically used to express the output power of engines and the power of electric motors, tools, machines, and heaters. It is also a common unit used to express the electromagnetic power output of broadcast radio and television transmitters. One kilowatt is approximately equal to 1.34 horsepower. A small electric heater with one heating element can use 1.0 kilowatt. The average electric power consumption of a household in the United States is about one kilowatt.[

89

MW

MegeWatt - one million watts or one thousand kW

90

Watt

The Watt is a measure of power or how much energy is released per second. It can be shortened to W. 1 Watt can be written 1W. We can calculate the power released in a bulb by multiplying the voltage in Volts across the bulb by the current in Amps flowing through the bulb (W = V x I). For example a current of 2 Amps flowing through a bulb with 12 Volts across it generates 24 watts of power.

91

amps

Electricity consists of the flow of electrons through a conductor such as an electric wire. You can’t see electrons but a helpful analogy is to think of electricity as the flow of water through a pipe. We measure the rate of flow of electricity as an electric current (just as we think of the rate of flow of water in a river as the river current). The letter used to represent current in an equation is I. Electric current is measured in Amperes, shortened to Amps or simply the letter A. A current of 2 Amps can be written as 2A. The bigger the current the more electricity is flowing.

92

voltage

We call electrical pressure Voltage and measure it in Volts, shortened to V. The letter V is also used represent Voltage in an equation. A voltage of 3 volts can be written as 3V. The bigger the voltage the higher the pressure and the more current flows. But in order for the current to flow, the electrical conductor or wire must loop back to the battery.

93

transformer

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Electromagnetic induction produces an electromotive force within a conductor which is exposed to time varying magnetic fields. Transformers are used to increase or decrease the alternating voltages in electric power applications.

94

Apparent Power

Apparent power is conventionally expressed in volt-amperes (VA) since it is the product of rms voltage and rms current. The unit for reactive power is expressed as var, which stands for volt-ampere reactive. Since reactive power transfers no net energy to the load, it is sometimes called "wattless" power.

95

Power Factor

In electrical engineering, the power factor of an AC electrical power system is defined as the ratio of the real power flowing to the load to the apparent power in the circuit, and is a dimensionless number in the closed interval of −1 to 1.

96

Active Power

The unit for all forms of power is the watt (symbol: W), but this unit is generally reserved for active power. Apparent power is conventionally expressed in volt-amperes (VA) since it is the product of rms voltage and rms current. The unit for reactive power is expressed as var, which stands for volt-ampere reactive.

97

What is this and where is located?

 

Q image thumb

It is the Distribution Panel at GP1 in the UPS rooms

 

98

What is this and where is it located?

Q image thumb

CC 

RPP 

APC - 2 panels on each leg A and B

99

What is this and where is it located?

Q image thumb

CC

Stulz ATS CRAC

2 10 ton sections - 20 ton units

DX 

100

What is this and where is it located?

Q image thumb

CC - Located in power room

ATS

Russelectric 1600 amp transfer switch

Open transition

Isolation bypass

101

What is this and where is it located?

Q image thumb

CC

Caterpillar Generator

1000kW

Provides power for both A and B legs.  Non-redundant

102

What is this and where is it located?

Q image thumb

CC

PDU - 

500kVA transformer

Distribution to 5 RPPs 

UPS is direct wired to transformer

103

What is this and where is it located?

Q image thumb

CC

Liebert System 3 CRAC

DX 

30 ton

104

What is this and where is it located?

Q image thumb

CC

A side Main Panel Board 

CRAC breakers 

105

What is this and where is it located?

Q image thumb

CC 

B Leg Main Panel Board

CRAC Breakers

UPS Breakers

Tie Breaker to A and B mains

106

What is this and where is it located?

Q image thumb

CC

MGE UPS 500kVA

3 UPSs

UPS room

 

107

What is this and where is it located?

Q image thumb

CC

PDI RPP

4 - 2 A ,2 B

They have BCMS monitoring

108

What is this and where is it located?

Q image thumb

CC

RPP - PowerSmiths

4 Panel 

4 RPPs

These are located in the churchs cage

They are dedicated to the church no other customers are on these RPPs

109

What is this and where is it located?

Q image thumb

CC UPS room

Data Aire CRAC 30 ton

Dry coolers for roof top units

Heat exchange to roof top is with Glycol

Free cooling capable below 40 f degree outside ambient temperature

DX refrigerant for internal coil to internal heat exchanger which goes to Glycol

 

110

What is this and where is it located?

Q image thumb

CC

DC Plant

There are two legs  A and B

111

What is this and where is it located?

Q image thumb

GP1

ATS  A and B legs

GE/Zenith

4000 amp  480v

Closed transition / bypass isolation

112

What is this and where is it located?

Q image thumb

GP1

Data Aire G Force CRAC  106 kW (30 ton) unit

17 30 ton units at GP1

2 20 ton units located in the UPS rooms

Roof top units - dry cooler  DX / Glycol

30 ton units have 2- 4 fan dry coolers 

20 ton units have 1 4 fan dry cooler

113

What is this and where is it located?

Q image thumb

GP1

CRAC Power Panel   A and B Panels

Located in the data center on the wall opposite of the UPS rooms

Breakers for the Data Aire CRACs and the RTUs are located there.

114

What is this and where is it located?

Q image thumb

GP1

Tie Breaker for CRAC Power Panels

Located in between the CRAC Power Panels

The key that is on the breaker goes to the mechanical breaker in the UPS room. 

115

What is this and where is it located?

Q image thumb

GP1

LIebert DSE 125 CRACs 

4 on the south end of the DC.  1 is in the UK2 cage

DX with pumped refrigeration

116

What is this and where is it located?

Q image thumb

GP1

Main Power Panel

Mechanical Breaker (feeds mechanical panel)

Maintenance Bypass Breaker (feeds distribution panel bypass breaker)

3 - UPS feeder breakers

House panel feeder breaker

117

What is this and where is it located?

Q image thumb

GP1 

Main Distribution Panel

3 UPS input breakers

House power panel breaker

118

What is this and where is it located?

Q image thumb

GP1

PDI Wavestar PDU with BCMS monitoring  

480v stepped down to 208v/120v

5 sets of PDUs (A and B) 10 total

4 sets are 300kVA 1 set is 150kVA

4 power panels on each unit.  Each power panel has 225 amp main breaker

Each PDU is fed/supplied by a 450 amp breaker at 480v

119

What is this and where is it located?

Q image thumb

GP1

PDI RPP 4 Panel with BCMS

Each panel has 225 amp breaker.

They are supplied by 208v from a PDU

120

What is this and where is it located?

Q image thumb

GP1

Homebrew PDU

300kVA transformer with a 800 amp Square D iLine Panel 

Each panel has 3 400 amp breakers that supplies load to RPPs

121

What is this and where is it located?

Q image thumb

GP1 

Toshiba G9000 UPS  

750kVA   480v in 480v out

6 UPSs 3 on each leg  The 3 units are paralleled to share the load and provide N+1 configuration.

122

What is this and where is it located?

Q image thumb

GP1

Liebert System 3 CRAC  2 units - 1 installed 1 not installed (stored on south end)

30 ton unit  

DX

123

What is this and where is it located?

Q image thumb

GP2

ATS - ASCO - 4000 amp 480v

closed transition / isolation bypass

There are 6 ATSs in the ATS power room.  Each one is supplied by its own supply breaker from the main disconnect for utility.  Each ATS also has its own supply breaker in the parallel gear for generator power.

 

124

What is this and where is it located?

Q image thumb

GP2

House distribution power panels and transformers.  Located in the switch gear power room on the west wall.

Steps power down from 480v to 208v.

125

What is this and where is it located?

Q image thumb

GP2

Distribution Panel -  480v distribution from UPS to PDUs on the floor. 2600 amp panel.  Located in UPS room.  There are 6 panels.  A B C D E F

2 UPS output breakers (1200 amp)

System Isolation Breaker

Maintenance Bypass Breaker

10 PDU breakers (450 amp)

D E F have an additional section attached for the generator wrap around bypass.

 

 

126

What is this and where is it located?

Q image thumb

GP2 

Emergency light UPS

It will keep about 1/5th of the existing lighting on during a power outage until generators start up.  It is located in the ATS room in the back.

127