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PRODUCT SPECIFICATION FOR A 15 TO 300 KVA,
THREE PHASE MEDICAL POWER STABILIZER SYSTEMS or MEDICAL POWER CONDITIONER WITH REGULATION AND CONDITIONING
(Phase Stabilizer)
1.0 General
This specification covers the physical, electrical and environmental characteristics and general requirements for a medical power stabilizer systems or medical power conditioner which is the same as Phase Stabilizer Power Regulating / Conditioning System. The specified equipment herein shall be referred to as a PHASE STABILIZER. The PHASE STABILIZER includes all components required to operate and maintain the system.
2.0 Applicable Documents
2.1 The National Electrical Code NFPA 1970 (Latest Edition)
2.2 American National Standards Institute Corp.and its Applicable standards C39.1, C80.1, C89, C84.1.
2.3 FCC Part 15, Sub-Part J, Class A.
2.4 IEC 435 International Electrotechnical Commission Recommendation "Safety of Data Processing Equipment".
2.5 VDE 0804/3.77 Verbauch Deulscher Elektotechiker standard. Telecommunication and Electronic Data Processing
Unit and Systems".
2.6 UL 1950 Underwriters Laboratories Inc. Standard for Safety. Electronic Data Processing and Office Equipment Systems for medical power stabilizer systems or medical power conditioner
2.7 VDE 0806 Verbond Deutscher Electrotechniker Standard "Safety Design" for medical power stabilizer systems or medical power conditioner.
2.8 CSA 22.1 Canadian Standards Association, "Data Processing Equipment" for medical power stabilizer systems or medical power conditioner and medical grade UPS for medical power stabilizer systems or medical power conditioner and medical grade UPS.
2.9 NEMA National Electrical Manufactures Association and its applicable standards for medical power stabilizer systems or medical power conditioner and medical grade UPS.
2.10 Local Inspection Authorities having jurisdiction over electrical equipment and its installation.
2.11 MIL-T-27B Dry Transformer Insulation for medical power stabilizer systems or medical power conditioner and medical grade UPS.
3.0 Major Components
The Basic components of the medical power stabilizer systems or medical power conditioner and medical grade UPS shall consist of isolation transformer, regulating electronics,
bypass switch, internal wiring, status indicators, single point grounding, input filter and output filters, EMI shields, and optional output circuit breaker.
4.0 System Package and Construction
4.1 Agency approval.
The medical power stabilizer systems or medical power conditioner and medical grade UPS shall be UL Listed under standard 1950.
4.2 Cabinet for medical power stabilizer systems or medical power conditioner and medical grade UPS unit shall consist of the following:
1. The Base shall be of heavy gage sheet metal of at least 10 gage. Each base shall be painted with baked
enamel paint of smooth finish. Four holes of AT LEAST of 9/16 " shall be provided in the base for the purpose of securing it to the floor. The case and base shall be designed for Seismic Zone 5 applications
2. Internal Sheet Metal for medical power stabilizer systems or medical power conditioner and medical grade UPS shall be plated with Gold Zinc Wash to ensure RFI, EMI susceptibility is reduced to the absolute minimum. Minimum thickness shall be 16 gage.
3. Removable Access Panels for medical power stabilizer systems or medical power conditioner and medical grade UPS shall be in the front and rear
.
4. Cover for medical power stabilizer systems or medical power conditioner and medical grade UPS shall be provided with a solid top. The top shall be easily removed to provide access to the
transformer taps for field changes
5. Conduit entry for medical power stabilizer systems or medical power conditioner and medical grade UPS shall be provided in the right and left lower side panels as well as provision
for bottom entry.
4.3 Isolation Transformer for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply) shall be a multi-shield, convection cooled, 3 phase, isolation transformer shall be provided. Construction of the transformer should separate the Primary connections and the Secondary connections. The output terminals of the secondary shall be at opposite end of the coil of the input terminals of the primary to minimize the possibility of transverse node injection. A copper foil shield shall be provided to allow a large surface area for shunting RFI signals of the core to ground. The isolation transformer shall be mounted on rubber isolation pads to prevent 60 Hz hum of the core from being transmitted to the frame. The transformer core clamp shall be grounded to the frame through a 1" copper strap. The Transformer insulation system shall be 220° C. Full load taps shall be provided (2) FLAN and (4) FLBN for
connection to the tap switching regulator module. Two (2) temperature monitors shall be provided: 140° C (alarm)
and 160° C (shut-down). The transformer shall be 150° C temperature rise.
4.4 Regulation Electronics for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply) shall be a solid state, electronic, zero current crossing tap switching regulation system shall be provided. This technology
shall use SCR's (Silicon Control Rectifier) technology in its construction and shall be rated at 100% above worst case current ratings ( 26% below nominal ) without any adverse effects. The regulation system shall respond to a change in the input voltage within a minimum of 1 cycle. The electronics shall be separated form the transformer area by a heat shield of sheet metal. This barrier shall be zinc plated for maximum conductivity.
4.5 Phase Imbalance for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply) shall be at maximum be 2%. The electronics and the transformer characteristics shall be of such construction that will provide for the 2% regulation band under all load and line conditions.
4.6 Neutral to Ground Potential for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply) shall be at maximum less than 0.5 volts maximum potential.
4.7 Bypass Switch for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply) shall be A manually operated bypass switch shall be provided, in the event that the regulation circuit malfunctions, it shall
select the 100% tap of the isolation transformer and provide unregulated nominal power to the output circuit. Access
to the bypass switch shall not require removal of any panels.
4.8 Internal Wiring for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply) shall be UL Listed appliance wire or Power wiring of multi stranded construction. Secondary and Primary Power wiring from the transformer shall not be in close proximity of each other.
4.9 Indicators and Meters for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply) shall be as follows:
1. Power On:
There shall be one indicator for each phase which has primary power being supplied to it.
2. Service Required:
Indicators shall be provided to indicate the status of the output transient suppression network fuses. The indicatorshall be illuminated any time any of these fuses are open.
4.10 Single Point Ground (SPG)
A single point ground bus shall be provided and shall be of copper construction. Minimum thickness shall be 1/4" X 1/4" and be silver plated to provide connection of the lowest possible resistance to all ground wires secured to the
SPG. The following shall be grounded to the SPG:
. Equipment Grounds.
. Neutral of Isolation Transformer.
. Core of the Transformer.
. Primary and Secondary Shields.
. Base.
. Equipment grounding conductor from the branch circuit.
. Case.
. Regulation Electronics.
4.11 Input Transient Filter for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply) shall consist of a resistor/capacitor network, installed on the primary, which acts
as a large snubber circuit to eliminate high frequency impulses from entering the power system.
4.12 Output Transient Suppression Network (TSN) for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply) shall consist of a capacitor network, installed on the secondary, this capacitor
network, when coupled with the primary filter, virtually eliminates most electronic noise from reaching the applied load or being fed back to the unit from noise generating loads.
A transient suppression network shall be located on the secondary side of the isolation transformer. The TSN shall suppress load induced noise to reduce the sensitivity of one load from another load. The TSN shall have the following characteristics:
. Parallel (Shunt) Protection
. Response time of < 5 ns
. Repetitive transients up to 5000/sec
. Clamping Voltage: 160VAC line to neutral 74VAC line to line
. Peak Pulse Power Rating: 25KW line to neutral13.5KW line to line
. Each device shall be fused for circuit protection. Visual service indicators (one for each phase) shall be provided to indicate that the OTSN is no longer providing protection.
5.0 Electrical Characteristics for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply)
5.1 60 HZ Frequency
. Rating KVA: 15,30,50,75,100,125,150,175,200,225,250 and 300
. Input Voltage: 208 VAC or 480 VAC
. Output Voltage: 208Y/120 VAC or 480Y/277 VAC
. Input Frequency Tolerance: 60 Hz ± 3 Hz
5.2 50 Hz Frequency
. Rating KVA: 15,30,50,75,100,125,150,175,200,225,250 and 300
. Input Voltage: 380 VAC or 415 VAC
. Output Voltage: 380Y/220 or 415Y/380 VAC
. Input Frequency Tolerance: 50 Hz ± 3 Hz
5.3 Transformer
. Type: Dry, isolation multi-shield (Delta-Wye)
. Impedance: 3% to 5% maximum
. Efficiency: > 96% @ 80% load
. Load Power Factor: Unity to 0.3 lead or lagging
. Harmonic Distortion: < 1% maximum added
. Waveform Distortion at Tap Switching: < 1% Added
. Noise rejection (typical): Common mode - 120 dB
Normal Mode -60 dB/decade
5.4 Audible Noise: Meets or exceeds NEMA standards
5.5 Input Voltage Regulation: + 8% to -10% of nominal
5.5 Input Voltage Surges: 20% Maximum above nominal line voltage, 50 Ms. maximum duration
5.6 Input Voltage Sags: 30% Maximum below nominal line voltage, 20 Ms. Maximum duration
5.7 Line Transients: 20% above nominal voltage for 1/hr max.
5.8 Output Voltage Regulation: ± 1% Typical, ± 2% maximum for all load / line conditions.
Page 4 of 4 PHA-2010C-998
Correction Times: 1 cycle typical
5.10 Load Rating: Continuous regardless of line / load conditions.
5.11 Overload Inrush Rating: 200% of full load for 10 seconds.
1000% of full load for 1 cycle.
6.0 Physical Characteristics for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply)
6.1 Dimensions:
15-75 KVA 100-300 KVA 100 KVA 125-150 KVA 175-300 KVA
All voltages 208 VAC inputs 480 VAC inputs 480 VAC inputs All voltages
Height: 42" 66” 42” 51.5” 66”
Width: 32” 50.5” 32” 40.5” 50.5”
Depth: 22” 32” 27” 26.5” 32”
7.0 Operating Environment for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply)
7.1 Temperature: 32° F to 104° F ( 0° C to 40° C )
7.2 Humidity: 10% to 90% relative humidity, non-condensing
7.3 Altitude: 0 to 7000 Ft.
8.0 Storage Environment for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply)
8.1 Temperature: -4° F to 140° F ( -20° C to 60° C )
8.2 Humidity: 0% to 95% relative humidity, non-condensing
9.0 Warranty for medical power stabilizer systems or medical grade power conditioner and medical grade UPS (uninterruptible power supply)
The manufacturer shall warrant the PHASE-STABILIZER to be free from defects in both material and workmanship for a
period of 24 months from the time of installation or 30 months shipment, whichever occurs first.
10.0 Manufacturer's Qualifications
The PHASE-STABILIZER shall be furnished by a manufacturer who specializes in the manufacturing of Medical Power
Distribution Systems with power regulation / conditioning and has been in business for at least 15 documented years, and with
a nation wide service organization. The manufacturer shall be an ISO9001 certified company.
11.0 Qualified Systems.
The unit shall be a PHASE STABILIZER manufactured by: |
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