HPDU

Tech Specs Data Sheet Brochure Sizing

The HPDU is an innovation high density rack power distribution system designed
to provide manageable and flexible power to multiple racks in a computer room.
The HPDU flawlessly integrates with a wide range of data center power sources,
equipment and loads.

TECHNOLOGY

• Innovative 2N technology, redundant power delivery to every rack.
• Unique design that powers up to 12 racks with one HPDU.
• Powerful design, delivers up to 200 kW in one compact unit.
• Modular hot interchangeable plug and play output receptacle.
• Compact design, Zero U with several mounting options.
• Advanced load current metering for each output receptacle.
• Unique wireless (Wi-Fi) energy monitoring options.

DESIGN

• Modern heavy-duty, reduced weight aluminum construction.
• Flexible mounting (on top of the racks, side mount or ceiling suspended)
• Reduces rack power installation time from days to hours.
• Cost efficient, reduces initial and future costs.
• Reduces overhead or under floor cable congestion.
• Simplifies power management and control.
• Flawless and reliable operation

SPECS

• Single or Three Phase, 2N Dual source or 1N single source.
• Voltage: 208/120 up to 400/230 VAC, 50/60Hz,
• Current: Up to 300A for 2N, 150A for 1N configuration.
• Extreme high power, up to 200 kW in one small unit.
• Output Receptacles: L5, L6, L14, L21, IEC 13, 19 or 309.

Horizontal Power Distribution Unit

The HPDU is a high power multiple racks distribution system, 2N redundant high-density power distribution system, designed to provide redundant, pluggable, modular, hot swappable, manageable and flexible power to multiple racks in a data center. It can be mounted on top, inside, under the rack row or suspended from the ceiling.

BENEFITS

2N design dual input and output for A & B sides
Increased redundancy with two independent inputs
Modular and hot swappable output receptacles
High power three phase, 300 Amps, 150 Amps per side
Rated at 400/230, 208/120 VAC, 50/60 Hz up to 207 kW
Each output receptacle is equipped with a current meter
Configurable to 2N or 1N operation
Three or single phase configuration

A Powerful Connection (TM)
Data center rack power distribution made easier

TECHNICAL SPECIFICATIONS

GENERAL

SCOPE

These specifications describe requirements for a rack mountable power distribution cabinet, supplying power to sensitive loads. It shall include all equipment to properly interface the AC power source to the intended load.

Furnished factory assembled Horizontal Rack Power Distribution Unit (HPDU) in accordance with the following specification with all components to conform to relevant standards of manufacturing and construction, including but not limited to:

• Institute of Electrical and Electronics Engineers (IEEE)
• National Electrical Code (NEC article 645 ANSI/NFPA 70)
• National Electrical Manufacturers Association (NEMA)
• National Fire Protection Association (NFPA 75)
• Underwriters Laboratories (UL)

STANDARDS

The specified system shall be designed, manufactured, and tested in compliance with UL category UL 1950 & UL 60950, under NWGQ.
The system shall safely withstand without misoperation or damage:

• Transient voltage surges on the AC power input as defined by ANSI/IEEE C62.41 for Category B3 locations (high surge exposure industrial and commercial facilities),
• Electrostatic discharges (ESD) up to 10 kV at any point on the exterior of the unit, and
• Electromagnetic fields from portable transmitters within 3 feet (1 meter) of the unit.

SYSTEM DESCRIPTION

Electrical Requirements

Input/Output voltage shall be ((208/120), (240,120), (400/230)) volts AC, ((50/60)) Hz, three-phase, four-wire-plus-ground or single phase, three-wire-plus-ground.

Environmental Requirements

Storage temperature range shall be -55 to +85°C (-67 to +185°F).
Operating temperature range shall be 0 to 40°C (+32 to 104°F).
Operation shall be reliable in an environment with 0% to 95% noncondensing relative humidity.
The audible noise level of the specified system shall be less than 45dBA.

DOCUMENTATION

Drawings

Wiring diagrams and drawings of major components shall be furnished.

Spare Parts

A list of recommended spare parts shall be supplied at the customer’s request.

User’s List

An in service user’s list shall be furnished upon request.

WARRANTY

The manufacturer shall provide a one-year warranty against defects in material and workmanship for 12 months after initial start-up or 18 months after ship date, whichever occurs first. (Refer to the Warranty Statement for details.)

QUALITY ASSURANCE

The specified system shall be factory tested before shipment. Testing shall include, but shall not be limited to: Quality Control Checks, “Hi Pot” Test, two times rated voltage plus 1000 volts, per UL requirements (Metering Calibration Tests), and load test of individual receptacles within the unit.

PRODUCT

COMPONENTS

Frame Construction and Enclosure

The frame shall be constructed of aluminum and pop riveted and/or welded to provide a strong substructure. The cabinet shall be a rack mountable or free standing NEMA type 1 enclosure and meet IP20 requirements.The unit shall have screw on access covers. A minimum of one cable/conduit openings and one space on the electrical bus shall be provided for hard wiring in addition to modular/removable and replaceable output distribution receptacles (4 each power module with 8 to 12 each output receptacles for each enclosure). All service shall be capable of being performed with access to the front of the unit. Retrofitting additional power distribution cables shall require access to the front of the unit only. A tool shall be required to remove the exterior panels that access the hazardous voltage area of the unit. The color of the exterior doors and panels shall be manufacturer’s standard color.

The unit shall be naturally convection-cooled. No fans for forced-air cooling system shall be used. The convection cooling method shall allow continuous full-load operation. Heat rejection shall be through a screened protective side openings that prohibits entry of foreign material.

The cabinet dimensions shall be a maximum of 80.0 in Wide by 5.25 in. High by 7.0 in. deep. The distributed weight shall be less than 40 lbs.

Input Power Connections

Dual Input power conductors shall connect to the two sets of main lugs or terminal blocks. Power terminals shall be provided for connection of a 150% rated neutral (1/O power cable, and ground). A Main Input power terminal blocks shall be provided for connection of the input power conductors, 150% rated neutral, and ground.)

Main Circuit Breaker

Distribution unit shall be protected by an external main 150 amp circuit breaker (Maximum). The breaker shall be UL listed and IEC rated for use at the system voltage.

Distribution bus

The specified system shall contain electrical bus for each phase, neutral and a ground lug for distribution to the intended receptacles and/or loads. The bus shall be accessed from the front of the unit. The electrical bus shall be totally enclosed with a removable accent panel that provides access to that bus without exposing other portions of the unit. The electrical bus shall have a rating of minimum 190 amperes, with an overall short-circuit current rating of 10,000 RMS symmetrical amperes. The electrical bus shall provide a total of 24 single-pole connection points for internal and external receptacles. The electrical buses shall include separate isolated neutral and safety-ground bus bars for the neutral and safety-ground connections for at least 12 output circuits. The neutral bus bar shall be sized for at least 1.50 times of full load rating to accommodate high harmonic neutral currents associated with single-phase nonlinear loads. The main power bus can sub-feed another PDU utilizing the same input power up to the full rating of the feeder breaker.

Branch Circuit Breakers

Each load circuit shall be protected by an individual branch circuit breaker. Single-pole, two-pole, and three-pole bolt-on ends type branch breakers up through 30 amperes shall be utilized. Each branch circuit breaker shall provide over current protection and shall clearly indicate the “ON”, “OFF”, and “TRIPPED” positions. All branch circuit breakers shall have a minimum interrupting capacity of [(5,000) (3,000)] RMS symmetrical amperes at [(120/208) (120/240) (400/230)] VAC. Each branch circuit breaker shall be sized in accordance with the NEC and shall be UL listed. Branch circuit breakers shall have an associated directory label identifying the branch circuit number and the receptacle being served.

Output Distribution

The output of each circuit is internally wired to a dedicated receptacle on the power module of the HPDU. The cable supplying each remote load shall consist of UL/CSA listed liquid-tight flexible metal conduit containing the required THHN copper insulated power, neutral, and parity-sized ground conductors. The flexible conduit shall be liquid-tight, insulated, and shielded to minimize electrical or mechanical disturbances to the conductors. The length of each cable and the type of receptacle/termination shall be as specified on the detailed cable schedule. Each output distribution cable shall be permanently labeled at each end of the cable with the assigned circuit number and receptacle type, equipment identification, and cable length. Each cable shall be thoroughly factory-checked and factory-tested. Tests shall include continuity, phase rotation and a Hi Pot test at twice rated circuit voltage plus 1000 volts. All output cables can be wound on spools mounted on casters to facilitate handling and installation. Each cable shall be a UL listed assembly.

ACCESSORIES (OPTIONAL COMPONENTS)

Current Monitoring

The current monitoring meters shall consist of a 3 digit high visibility LED Display to monitor current parameters. Front LED’s shall be provided for operator interface. The display shall be accessible without opening the door. All currents shall be monitored using true RMS measurements for accurate representation of non-sinusoidal waveforms typical of computers and other sensitive loads.

Access

The enclosure shall be provided removable cover that allow the operator to access the main and branch breakers.

Main Breakers

Bolt on main circuit breaker for each receptacle shall be provided.

Export Crating

Heavy-duty solid wood crating shall be provided to meet international requirements regarding package strength and special markings for overseas shipments.

Execution

Factory start-up, preventive maintenance, and full service for the specified system shall be available upon request. The manufacturer shall directly employ a service organization of factory- trained field service personnel dedicated to the start-up, maintenance, and repair of the manufacturer’s power equipment. The manufacturer shall maintain a dispatch center 24 hours per day, 365 days per year, to minimize service response time and to maximize availability of qualified service personnel.

DATA SHEET

High Power Distribution Unit (HPDU) three or single phase models specifications

High Power Distribution Unit three or single Phase (∅), single or dual input feedersfor A & B redundant distribution configuration (horizontal or vertical installation options).

• Input/output 3∅: 400/230, 208/120 VAC, 50/60- Hz, 3 Wire, Neutral, & Ground
• Input/output 1∅: 400/230, 208/120 VAC, 50/60- Hz, 2 Wire, Neutral & Ground
• 2N, 3∅Power kW: Dual 3∅, 3W, N + Gup to 150A, 104 kW at 208V, 208 kWat 400V
• 1N, 3∅ Power kW: Single 3∅, 3W, N + G up to 150A, 52 kW at 208V, 104 kW at 400V
• 1N, 1∅ Power kW: Single, 1∅, 2 W, N +G up to 150A. 31-36kW at 208/230/240 VAC
• Optional main assembly metering: Volts, Amps, KW, Hz. (Wireless Wi-Fi is available)
• Standard current meter/measurement for each output receptacle.
• Hot interchangeable/swappable output distribution modules with configurable receptacle.
• Warranty: One Year
• CE, UL 60950-1, NEMA 1 enclosure.

Main assembly models and description

MODEL

Description

Dimensions

H2NT-4M:

H1NT-4M:

H1NT-12B:

H2NT-12B:

H1NT-3M:

H1NS-3M:

2N, 208 kW at 400/230V, 104 kW at 208/120V, 4 Wire + Ground

1N, 104 kW at 400/230V, 52 kW at 208/120V, 4 Wire + Ground

2N, 208 kW at 400/230V, 104 kW at 208/120V, 4 Wire + Ground

1N, 104 kW at 400/230V, 52 kW at 208/120V, 4 Wire + Ground

1N, 36 kW at 230V, 240/120V, 208/120V, 3 Wire + Ground

76”W x 5”D x 7”D

60”W x 5”D x 7”D

* H= HPDU model, 2N = Two source input, 1N = One source input, T = Three Phase, S = Single phase 4M = Four modules capacity, 3M = Three module capacity.
* Weight is less than 50lbs depending on the number of modules, average weight of each module is 8 lbs.
* Model 12B is a three phase input and output unit. It is equipped with front facing breakers/meters and back facing receptacles.

HPDU modules with current meter

Module model #

# of Receptacle & Type

Receptacle rating – Voltage, current, kW – Module kw)

ML520:

ML530:

ML620:

ML630:

ML1420:

ML1430:

ML2120:

ML2130:

12B-50:

12B-30:

12B-20:

ML309:

(3) L5-20

(3) L5-30

(3) L6-20

(3) L6-30

(3) L14-20

(3) L14-30

(2) L21-20

(2) L21-30

(6) CS8369

(12) L21-30

(12) L21-20

(2) IEC 60309

(Single phase 120 VAC, 20 Amps, 2.4 kW per receptacle)

(Single phase 120 VAC, 30 Amps, 3.6 kW per receptacle)

(Single phase 208 VAC, 20 Amps, 4.16 kW per receptacle)

(Single phase 208 VAC, 30 Amps, 6.24 kW per receptacle)

(Single phase 208 VAC, 20 Amps, 4.16 kW per receptacle)

(Single phase 208 VAC, 30 Amps, 6.24 kW per receptacle)

(Three phase 208 VAC, 20 Amps, 7.2 kW per receptacle)

(Three phase 208 VAC, 30 Amps, 10.8 kW per receptacle)

(Three phase 208 VAC, 50 Amps, 18 kw per receptacle)

(Three phase 208 VAC, 30 Amps, 10.8 kw per receptacle)

(Three phase 208 VAC, 20 Amps, 7.2 kw per receptacle)

(Single phase 230 VAC, 32 Amps, 7.36 kW per receptacle)

HPDU SIZING GUIDE

Single phase: kVA = Power (P) = (Voltage (V) x Current (I))/1000
Three phase: kVA = Power (P) = (Voltage (V) x Current (I) x 1.73)/1000
KW = KVA x Power Factor (PF), usually PF=1 in data centers, U.L. load voltage 208/120 VAC, CE 400/230 VAC

HPDU load calculations

HPDU model H1NT (3∅, Single input) KW input/output = 54 kw
HPDU model H2NT (3∅, Dual input) KW input/output = 104 kw (Can be used as 2 x 54 kw per source for redundancy)

General Output receptacles voltage, current and kW ratings:

L5-20 Single phase 120 VAC, 20 Amps, 2.4 kW
L5-30 Single phase 120 VAC, 30 Amps, 3.6 kW
L6-20 Single phase 208 VAC, 20 Amps, 4.16 kW
L6-30 Single phase 208 VAC, 30 Amps, 6.24 kW
L14-20 Single phase 208 VAC, 20 Amps, 4.16 kW
L14-30 Single phase 208 VAC, 30 Amps, 6.24 kW
L21-20 Three phase 208 VAC, 20 Amps, 7.2 kW
L21-30 Three phase 208 VAC, 30 Amps, 10.8 kW
CS8369 Three phase 208 VAC, 50 Amps, 18 kW
IEC 60309-32 Single phase 230 VAC, 32 Amps, 7.36kW

HPDU MODEL H1NT – SINGLE INPUT SOURCE (1N, NON-REDUNDANT)

RACK LOAD	# Power Strips Per Rack	Server / Rack Voltage-Amps	Receptacle Type	HPDU module type needed	#of receptacles ModuleHPDU	Number of Racks per HPDU
2.4 kW	1	120V – 20A	L5-20	ML520	3 12	12
3.6 kW	1	120V – 30A	L5-30	ML530	3 12	12
4.16 kW	1	208V – 20A	L6-20	ML620	3 12	12
6.24 kW	1	208V – 30A	L6-30	ML630	3 12	12
7.2 kW	1	208V-20A, ∅	L21-20	ML2120	2 8	8
10.8 kW	1	208V-30A, ∅	L21-30	ML2130	2 8	8
18 kW	1	208V-50A ∅	CS8369	CS8369	8 per HPDU	8

HPDU MODEL H2NT – DUAL INPUT SOURCE (2N, REDUNDANT)

RACK LOAD	# Power Strips Per Rack	Server / Rack Voltage-Amps	Receptacle Type	HPDU module and type	#of receptacles ModuleHPDU	Number of Racks per HPDU
2.4 kW redundant	2	120V – 20A	L5-20	ML520	3 12	6
3.6 kW redundant	2	120V – 30A	L5-30	ML530	3 12	6
4.16 kW redundant	2	208V – 20A	L6-20	ML620	3 12	6
6.24 kW redundant	2	208V – 30A	L6-30	ML630	3 12	6
7.2 kW redundant	2	208V-20A, ∅	L21-20	ML2120	2 8	4
10.8 kW redundant	2	208V-30A, ∅	L21-30	ML2130	2 8	4
18 kW redundant	2	208V-50A, ∅	CS8369	CS8369	8 per HPDU	4

The above information is provided in order to assist in the selection of the receptacle type needed to power the rack PDU, the HPDU module type needed, and the HPDU model, size and type.