A.

Performance Specifications

B.

Approved Manufacturers and Model Numbers

C.

Functional and Operational Guidelines

A.

Section 16289-1 – AC Power Distribution and Equipment

Transient Voltage Suppression

B.

Section 13100 – Lightning Protection

C.

Section 16493 – Surge Arrestors

A.

IEC 529: 1989/EN 60 529:1991/DIN VDE 0470-1: 1992-11. Type of protection through housing (IP Code).

B.

NEC, The National Electrical Code

C.

DIN VDE 0165: 1991-02 EN 50 020: 1994/DIN EN 50 020/VDE 0170/0171 part 7: 1996-04. Installation of electrical apparatus in hazardous areas. Electrical apparatus for potentially explosive atmospheres; intrinsic safety "i".

D.

EN50022: 1977/DIN EN 50 022: 1978-05 mounting rails 35mm wide for snap-on mounting of equipment.

E.

IEEE C62.41.1-2002.  IEEE Guide on the Surge Environment in Low Voltage (1000V and less) AC Power Circuits.

F.

IEEE C62.41.2-2002. IEEE Recommended Practice on the Characterization of Surges in Low-Voltage (1000V and Less) AC Power Circuits.

G.

UL 497B.  Protectors for Data Communication and Fire Alarm Circuits

H.

IEEE C62.36-2000.  IEEE Standard Test Method for Surge Protectors Used in Low-Voltage Data, Communications, and Signaling Circuits.

I.

UL 1604.  Standard for Electrical Equipment for Use in Class I and II, Division 2, and Class III Hazardous (Classified) Locations

J.

IEC 61643-21.  Low Voltage Surge Protective Device:  SPD Connected to Telecommunication and signaling networks – Performance requirements and testing methods.

K.

ISO 9001:2000.  International Quality Management System

A.

Product data shall include 8/20µs rated surge capacities, relevant IEEE and IEC specifications, installation instructions, and operating characteristics.  10/350µs rated surge capacity shall be included when the communication signal cabling is installed outdoors and exposed to lightning influences.

B.

The product submittals shall include:

1. UL 497B documentation.

2. UL 1604 Class I / Div 2 certification where appropriate.

3. Dimensional drawing of each SPD type.

4. Circuit diagram of SPDs internal components.

5. Maximum 10/350µs lightning test current impulse capability (only for equipment located outdoors or with outdoor cabling).

6. Copy of manufacturer’s ISO 9001:2000 Quality Registration Certificate.

C.

Manufacturer’s statement of warranty.

A.

SPDs shall be warranted against failure due to results of lightning or switching transients for a period of 5 years.

A.

I/O protection shall be accomplished by either a two or three stage protection circuit, depending upon the application.

B.

All wiring, grounding, hardware, and connection means shall be in compliance with the National Electrical Code and/or applicable local codes.

C.

Transient Voltage Suppression (Surge Protection Device) equipment shall be supplied by Phoenix Contact Inc, Harrisburg, PA or proven equal.

A.

All SPDs shall have integral mounting brackets to attach to 35mm DIN rail conforming to DIN EN50022, with the exception of conduit mounted devices.

B.

The SPD shall be mounted as close as possible to the equipment it is protecting.

C.

Mounting guidelines will be followed as indicated in installation instruction provided by manufacturer.

D.

The SPD mounting foot shall also function as the SPD grounding foot (thereby minimizing impedance and increasing performance).

E.

Pluggable SPDs shall use a DIN rail mounted base with one of the following options:

1. For shield and / or return termination at the SPD, a base with a direct electrical connection between the ground terminal and the DIN rail.

2. For shield and / or return termination elsewhere, a base with a gas tube between ground terminal and DIN rail.

A.

Wires shall be attached to the SPD by means of a cable-clamping terminal block activated by a screw. Connections shall be gas-tight, and the terminal block shall be fabricated of non-ferrous, non-corrosive materials.

B.

All wiring points and plug connections shall be "touch safe" with no live voltages that can make contact with a misplaced finger in accordance with IEC 529.

A.

SPDs for 24 V and 110 V circuits shall be UL 497B listed or recognized.

B.

SPDs shall consist of a multistage hybrid circuit with staging inductors or resistors to properly coordinate the components.

C.

DIN rail mounted SPDs shall consist of two parts; a base terminal block and a plug protection module. Replacing a plug shall not require the removal of any wires nor shall it interrupt the signal. Base and plug shall have the ability to be coded to accept only the correct voltage plug.

D.

Surge protection for Division 1 hazardous area locations will conform to EN 50 020/DIN EN 50 020/VDE 0170/0171 part 7: 1996-04. Surge protection for hazardous areas shall have at least 500V isolation between intrinsic safety ground and earth ground.

E.

Surge protection plugs used for high speed data communications shall not have a cutoff frequency less than 100 MHz for a 50 ohm system.

F.

Surge protection for 5 to 24V analog or discrete I/O shall be designed to withstand a maximum 10 kA test current of a 8/20ms waveform according to IEC 1024 Application Guide A and IEEE C62.41.1-2002 Category C Area and 2.5 kA test current of a 10/350ms waveform according to IEC 1024/Application Guide A and by IEEE C62.41.2 Appendix A.  Surge protection for I/O (60 V AC – 230 V AC) shall be designed to withstand a maximum 6.5kA 8/20ms test current.

G.

Both plugs and bases shall have a rating of IP20 according to IEC 529. Bases shall have an integral label holder to mark each terminal block.

H.

Operating temperature range shall be at least -40°C to +80°C.

I.

Base options shall include models with either: 

1. A direct electrical connection between ground terminal and DIN rail, or

2. A gas discharge tube between ground terminal and DIN rail..

J.

SPD plugs for analog, discrete, and data circuits shall be testable via a portable device.  The tester shall be a single unit capable of diagnosing the plug status once model information is entered via a peripheral device such as a key pad, bar code scanner, etc.  Results shall be exportable to an external device such as a printer / PC for historical record keeping.

I.

Acceptable Part Numbers for Pluggable Communication and Data SPDs Include: 

1. For analog signals, DIN rail mounted, 5-24 VDC and 12-110 VAC:  Phoenix Contact model PT 2x2 (one plug and base required to protect two analog loops), OR model PT 1x2 (one plug and base required to protect one analog loop.

2. For digital signals (discrete), DIN rail mounted, 5-24 VDC:  Phoenix Contact model PT 4x1 (one plug and base required to protect four digital signals), OR model PT 2x1 (one plug and base required to protect two digital signals).

3. For discrete signals, DIN-rail mounted, 60-230VAC non-isolated cards (shared returns):  Phoenix Contact model PT 2x1VA (one plug and base required for every two discrete signals).

4. For discrete signals, DIN-rail mounted, 60-230VAC isolated cards (one return for each I/O):  Phoenix Contact model PT 2-PE/S (one plug and base for each pair of signal wires, L-N).

5. For high speed data bus signals, DIN rail mounted, 5-48VDC:  Phoenix Contact model PT 3-…HF (one plug and base required to protect a two-wire data signal, OR model PT 5-…HF (one plug and base required to protect a four-wire data signal).

6. For analog signals, DIN rail mounted, in Division 1 Hazardous area locations, 24VDC:  Phoenix Contact model PT 2xEX(I)-24DC (one plug and base required for two analog loops or four digital signals).

A.

Surge protection shall consist of a multistage hybrid circuit with staging inductors or resistors to properly coordinate the components. Series resistance shall not exceed 4.7 ohms (+/- 10%).

B.

DIN rail mounted surge protection housing width shall not exceed 6.2mm.

C.

Surge protection for analog and digital I/O shall be designed to withstand a 5 kA test current of an 8/20ms waveform according to IEC 1024 Application Guide A and IEEE C62.41.1-2002 (Line to Ground). Surge handling capability of Line 1 + Line 2 shall be 10 kA of 8/20ms waveform.

D.

Operating temperature range shall be at least -40°C to +85°C.

E.

Maximum load current through the surge protection module shall not exceed 250 milliamps for analog and digital signal protection.

F.

Cutoff frequency for analog modules shall be 3 MHz for a 50 ohm system and 1 MHz for a 150 ohm system. Cutoff frequency for digital modules shall be 2 MHz for a 50 ohm system and 600 KHz for a 150 ohm system.

G.

Wire size range shall between 24 and 14 AWG.

H.

Ex-I modules shall contain only diode and gas tube (no MOV) and shall be isolated from ground by 500VDC as required by EN 50 020.

I.

Acceptable Part Numbers for non-pluggable / high density communication and data SPDs include: 

1. For analog signals, DIN rail mounted, 24 VDC:  Phoenix Contact model TT-2-PE-24DC.

2. For digital / discrete signals, DIN rail mounted, 24 VDC:  Phoenix Contact model TT-2/2-24DC.

3. For analog signals, DIN rail mounted, in Division 1 Hazardous area locations, 24VDC:  Phoenix Contact model TT-EX(I)-24DC..

A.

Surge protection for analog signal protection shall consist of a multistage hybrid circuit utilizing only diodes and gas discharge tubes but no metal oxide varistors (MOVs).

B.

Surge protection for analog and digital I/O shall be designed to withstand a 10 kA test current of a (8/20)ms waveform according to IEC 1024 Application Guide A and IEEE C62.41.1-2002 Category C Area.

C.

Surge protection shall not have more than 10 ohms of series resistance.

D.

Surge protection shall have a response time less than 1ms.

E.

Maximum operating voltage shall not exceed 28 VDC.

F.

Surge protection shall not have a cutoff frequency less than 400kHz (for a 600 ohm system) to allow HART protocol and other superimposed smart digital signals to function.

G.

Surge protection module shall have an operating temperature range of at least -40°C to +65°C.

H.

Maximum load current through the surge protection module shall not exceed 250 mA.

I.

Acceptable part numbers for conduit mounted analog signal SPDs include: 

1. For analog signals, conduit mounted, 24VDC:  Phoenix Contact model S-PT 1-2PE-24DC.

A.

Surge protection for four-wire field devices shall include a SPD for protecting the analog signal and a separate SPD for protecting the 120VAC power.  Both SPDs shall be self contained in one NEMA 4X enclosure suitable for mounting outdoors. 

B.

Each SPD for the four-wire protection system shall be designed to withstand a 10 kA test current of a (8/20)ms waveform according to IEC 1024 Application Guide A and IEEE C62.41.1-2002 Category C Area.

C.

Surge protection shall not have more than 10 ohms of series resistance.

D.

Surge protection shall have a response time less than 1ms.

E.

Maximum operating voltage shall not exceed 28 VDC for the analog SPD and 130 VAC for the power SPD.

F.

Acceptable part numbers for NEMA 4X four wire field mount SPDs include:

1. Phoenix Contact BXT-N4X 4-WIRE.

A.

Surge protection shall be available with either a "BNC", "N", "7/16", or "F" connector to mate with the appropriate coaxial cable.

B.

Surge protection module shall have an operating temperature range of at least -20°C to +80°C. Quarter wavelength (l/4) filters shall have an operating temperature of at least –40°C to 100°C.

C.

Nominal current ratings for the various connector types shall be at least:

3.5 amps for "BNC" connectors, 5 amps for "N" connectors, 2 amps for "F" connectors. l/4 filters shall be capable of up to 500 W power at 2 GHz.

D.

Cutoff frequency (3 dB) for the various connector types shall be at least:

1 GHz in 50 ohms system for "BNC" connectors, 3 GHz in 50 ohm system for "N" connectors, 1 GHz in 75 ohm system for "F" connector. l/4 filters shall have less than 0.2 dB input attenuation between 1.7 and 2.3 GHz.

E.

Surge current capability (8/20)ms waveform according to IEC 1024 Application Guide A for the various connector types shall be at least:

5 kA for "BNC" connectors, 20 kA for "N" connectors, 330 A for "F" connectors. l/4 filters shall handle up to 20 kA.

F.

Acceptable part numbers for coaxial cable SPDs include:

1. For “BNC” connectors:  Phoenix Contact C-UB/E.

2. For “N” connectors:  Phoenix Contact CN-UB-280DC-SB.

3. For “F” connectors:  Phoenix Contact CF-TV 30DC-BB-U.

4. For “l/4” filters:  Phoenix Contact CN-LAMDA series.

A.

Additional automated test equipment shall be provided for each job to perform verification testing on the modular SPDs.  This testing equipment shall have the following capabilities:

1. Bar code scanner and touch pad key entry for modular plug identification.

2. LCD display for diagnostics and test results display.

3. Reporting output capability with RS232 interface.

A.

Install all SPD devices with conductors or buses between SPD and points of attachment as short and straight as possible.

B.

When possible, use one grounding wire between DIN rail mount surge protection devices and the control cabinet ground.  Grounding practice shall be single-point, meaning SPD and equipment shall ground at an equal-potential connection point.

C.

Installers shall follow manufacturer’s installation instructions.

D.

Installers of SPDs shall be knowledgeable, and if required, certified, in all applicable electrical practices, standards, codes and wiring techniques as they pertain to installing SPDs.

A.

Engage a factory-authorized service representative to inspect equipment installation, including connections.

1. Verify that electrical wiring installation complies with manufacturer’s written installation requirements.

B.

Perform periodic verification testing on modular SPDs with automated test equipment.  Replace any failed modules at this time.