n covers the electrical characteristics and general requirements for Redundant Power
Management Module (PMM) with a MGE Digital Static Transfer Switch (STS) at the secondary side of
the isolation transformer, hereafter referred to as PMM Ultra. The system shall be designed primarily for
distribution of critical electrical power and shall provide a redundant power path from input to output in
order to increase reliability, serviceability and availability. The system shall be designed primarily for
distribution of electrical power in computer rooms, but its design shall also permit adaptation for use in
office, factory and other applications as well. The system shall be an integrated device, which provides
isolation, distribution, control and monitoring of ac power, and shall properly interface the building's AC
power source with sensitive electronic loads.
1.2
Related Documents
The following documents shall apply to this contract in addition to the requirements specified herein:
1.2.1
System single line diagram.
1.3
General Requirements
1.3.1 The PMM Ultra shall be furnished as a complete system. All equipment and accessories are
inter-related and shall be provided as shown and as required for a complete system.
1.3.2 The manufacturer shall have a minimum of three years of successful on line operation
experience in PMM Ultra.
1.3.3 The design configuration shall achieve an overall system MTBF (Mean Time Between Failure)
of not less than 400,000 hours.
1.4
Applicable Codes, Standards, Approvals and Certifications
The PMM Ultra shall be designed and manufactured to the following standards:
1.4.1
FCC Part 15 Class A (47 CFR 0-19).
1.4.2
Underwriters Laboratories (UL) 1950 Safety of Information Technology Equipment, including
Electrical Business Equipment.
1.4.3
CSA Standard 950.
1.4.4
NEMA Standard ST-1.
1.4.5
NEMA ST20 - Dry-Type Transformers for General Applications.
1.4.6
NEMA AB1 - Molded Case Circuit Breakers.
1.4.7
NEMA PB1 Panelboards.
1.4.8
NFPA 70 - National Electric Code.
1.4.9
ISO 9000 - International Organization for Standardization.
1.4.10 NFPA 70 - National Electric Code (Current Edition).
1.4.11 National Electrical Manufacturers Association (NEMA).
1.4.12 American National Standards Institute (ANSI).
1.4.13 National Fire Protection Association (NFPA).
1.4.14 Federal Information Processing Standards (FIPS).
1.4.15 Underwriters Laboratories (UL) 1008 Standards for Automatic Switches. Version 1.01
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The system shall be certified by a national testing laboratory: Underwriters Laboratories (UL) and/or
Electrical Testing Laboratories (ETL).
1.5
Submittals
1.5.1
Submittals shall be in accordance with specified procedures. Submit shop drawing and product
data for record purposes prior to shipment.
1.5.2
Indicate construction details including dimensions, weights, clearances, and floor tile cutouts (if
applicable); heat loss, major component layout, and power and control cable access details.
Include circuit breaker and cable schedule (if applicable), including cable lengths and receptacle
designations. Include connection diagram for external wiring, and details of conduit and wiring
connections and terminations. Indicate special receiving and handling procedures.
1.5.3
Provide electrical characteristics and connection requirements for the system and accessories.
1.6
Delivery, Storage and Handling
1.6.1
The system shall be wrapped in plastic and provided with protective padding to prevent damage
in shipment. The system shall have roll-around casters designed to resist damage during
transport. Shipping braces, if included, shall be clearly marked. Documentation shipped with
the system shall clearly state any special receiving and/or handling procedures.
1.6.2
Contractor shall accept units on site, inspect for damage, and file a claim with the carrier
immediately if damage is noted.
1.6.3
Contractor shall protect products from moisture and dust by storing them in a clean, dry location
remote from areas involved in construction operations. Provide additional protection in
accordance with manufacturer's instructions.
1.7
Environmental Requirements
The PMM Ultra shall be designed for operation in the following conditions:
1.7.1
Operating temperature: 10
°
C to +40
°
C.
1.7.2
Storage: -40
°
C to +60
°
C.
1.7.3
Relative Humidity: 10% to 95% non-condensing.
1.7.4
Operating altitude (Above Sea Level): 0 to 8,500 feet.
1.7.5
Non-operating altitude: -150 to 50,000 feet.
1.7.6
Audible Noise: As appropriate for kVA rating, per NEMA ST-20.
1.8
Warranty
The PMM Ultra shall be fully warranted against defects in workmanship and/or material for a period of
twelve (12) months from the Date of Substantial Completion or eighteen (18) months from the date of
shipment, whichever occurs first. Such warranty shall include cost of travel and per diem of
manufacturer's field service technician to the site, if required. The manufacturer shall guarantee
response for the useful life of the equipment, as long as the system is covered by the warranty or by
seven by twenty four service agreement.
1.9
Shipping
1.9.1
The manufacturer shall include in the bid delivery of the equipment to the job site. The delivery
shall be based on Dock-to-Dock.
1.9.2
The equipment shall be delivered complete and ready for installation.
1.10
Work Included
1.10.1 Furnish system of size and rating as described herein. The system shall include, but not limited
to, STS, dual isolation transformers, output distribution panels and all required point to point
interconnecting diagrams. Version 1.01
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1.10.2 All labor, materials, appliances, tools and equipment in connection with furnishing and delivery
of the equipment to site loading dock, complete as shown on the drawing and/or as specified
herein.
1.10.3 Off loading from the truck and setting in place of all equipment including batteries specified
herein shall be responsibility of the installation contractor, including and all associated labor,
parts, tools and equipment.
1.10.4 Installation and wiring of all equipment shall be the responsibility of electrical installation
contractor.
1.11
Spare Parts
The manufacturer shall submit a complete itemized list of recommended spare parts to adequately
support the proposed system. Spare parts shall be kept on site, so that repair to the system can be
made in a minimum time. Mean Time To Repair (MTTR) shall be a maximum of one- (1) hours.
PART 2- PRODUCT
2.1
The System
This specification covers the electrical characteristics and general requirements for a Digital Static
Transfer Switch (STS) and redundant Power Management Module, hereafter referred to as PMM Ultra.
The system shall be designed primarily for distribution of electrical power for critical applications and
shall provide a redundant power path for the input power in order to increase reliability, serviceability
and availability. The system shall be designed primarily for distribution of electrical power in computer
rooms, but its design shall also permit adaptation for use in office, factory and other applications as well.
The system shall be an integrated device, which provides isolation, distribution, control and monitoring
of ac power, and shall properly interface the building's AC power source with sensitive electronic loads.
2.2
Ratings
2.2.1
The full load continuous capacity of _____ kVA.
2.2.2
Input voltage: ______ VAC
±
15%, three (3) phase, three- (3) wire plus ground.
2.2.3
Input/output frequency: _____ Hz
±
5 Hz.
2.2.4
Output voltage: 208/120 VAC
±
15%, three (3) phase, four- (4) wire plus ground.
2.2.5
Load Power Factor: Between 0.6 lagging and 0.6 leading power factor.
2.2.6
Harmonic Distortion, output voltage: Less than 1% added.
2.3
COMPONENTS
The complete system shall consist of the following major components:
2.3.1
Enclosure
The PMM Ultra shall be housed in a modular configured, free standing NEMA-1 enclosure with
dead front construction. The PMM Ultra shall accommodate bottom fed cables. The system
monitor panel, input and output circuit breakers shall be accessible from the front. All customer
power and control connection points shall be accessible from the rear of the PMM Ultra
enclosure. All circuit breakers are protected with "hinged dead front" panels to prevent access
without a tool
The system cabinet dimensions shall be:
Depth: 30", The system shall pass through a standard 36" wide doorway.
Width: __, (overall widths exceeding 68" must have shipping splits)
Height: 61" Version 1.01
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The cabinet shall be mounted on heavy-duty casters and include leveling jacks. Casters shall
rotate 360
o
. Casters shall be sized to support the maximum weight of the system without
damage to surfaces of bearings. Leveling Jacks shall be provided to distribute the maximum
weight of the system. Design shall allow the leveling jacks to be raised a minimum of one inch
(1") to prevent damage during shipment.
2.3.2
Input Connection
A.
Power Connections
The system shall include two (2) inputs. The input power connections shall be terminated
on the main input circuit breaker in the PMM cabinet.
2.3.3
Power Management Module (PMM)
The PMM shall consist of:
A.
PMM Input Circuit Breaker
The PMM Ultra

shall have two (2) main input circuit breaker (CB1 and CB2); each circuit
breaker shall feed separate isolation transformer. When closed and fed by a voltage
source shall energize the PMM. The circuit breaker, rated for 600 VAC, 60 Hz, 3 Phase,
and rated not less than 125% of the systems full load input current rating. The circuit
breakers shall include auxiliary contacts and 24 VDC shunt trip to automatical