Features
■ Fits single or dual conduit ports
■ Weatherproof
■ Long life, high operational reliability
■ Stainless steel construction
1669 Series – Transient Protector
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications
Used for full weather protection of fi eld transmitters and instrumentation operating on 24-28 V systems, the 1669 Series protects
sensitive I/O circuitry from surges of any polarity or magnitude. Principal use is on 4-20 mA control loops and can be used on
grounded (+ or -) or ungrounded circuits. Able to survive and protect even from direct lightning strikes to the transmitter ground or
fi eld wiring. Automatic recovery after passage of the surge. Long life, high operational reliability.
Construction is hybrid 3-stage design, using a high surge capacity Balanced Trigard® Gas Tube protector, coordination impedance
and silicon suppressors to provide differential and common mode protection with very low clamping levels for delicate loads. The
housing is thick walled schedule 40, type 303 stainless steel. Wiring is #20 (.5 mm2) 1000 V, PVC insulated. Solid red and black colors
are used for the input; striped colors signify the protected output. The protector ground wire (green) is electrically bonded to the
metallic housing; it is for connection to the grounding screw within the fi eld device. Use Model 1669-02/06 for standard ground
resistance conditions.
Use Model 1669-01 / 05 with higher voltage isolation to ground for sites with high resistance soil conditions or where signifi cant
ground potential differences are known to exist.
Characteristics
Model 1669-01 Model 1669-02
Model 1669-05 Model 1669-06
Warranty ...................................................................................3 years ................................................. 3 years
Maximum Signal Voltage ..........................................................30 Vpk ................................................. 30 Vpk
DC Clamping Voltage
L-L .......................................................................................36 V ..................................................... 36 V
L-G ......................................................................................250 V ................................................... 36 V
Capacitance, 1 MHz, max
L-L .......................................................................................1200 pF ............................................... 2000 pF
L-G ......................................................................................40 pF ................................................... 2000 pF
Series Resistance, per line .......................................................22 Ω ..................................................... 22 Ω
Inductance, per line, max ........................................................1 µH ..................................................... 1 µH
DC Leakage, 24 Vdc, max ........................................................1 µA ..................................................... 1 µA
Impulse Clamping Voltage: L-L ................................................50 V ..................................................... 50 V
1 kA (L+L)-G, 10/1000 µs, 500 V/µs: L-G ..........................750 V ................................................... 70 V
Ambient Temperature Range, Storage .....................................65 °C to +130 °C ................................. 65 °C to +130 °C
Operating Temperature
Non-hazardous areas..........................................................40 °C to +100 °C ................................. 40 °C to +100 °C
Hazardous areas .................................................................20 °C to + 55 °C .................................. 20 °C to + 55 °C
Maximum Load Current ............................................................150 mA ................................................ 150 mA
- Except when limited for T5 conditions (.73 W ..................129 mA ................................................ 129 mA
Humidity ...................................................................................0 - 95 % Condensing .......................... 0 - 95 % Condensing
Altitude, Operating ...................................................................6,000 m ............................................... 6,000 m
Weight
1669-01 / 02 .......................................................................150 g ................................................... 150 g
1669-05 / 06 .......................................................................220 g ................................................... 220 g
Component Response Time .....................................................1 ns ...................................................... 1 ns
Surge Life (L+L)-G
20 kA 8/20 µs ......................................................................20 times ............................................... 20 times
1 kA 10/1000 µs ..................................................................1000 times ........................................... 1000 times
Installation Diagrams
Product Dimensions
This ‘double ended’ type is used when the fi eld instrument has
only a single conduit entry port; the protector attaches to the
instrument, and the connection to the fi eld wiring is made inside
an external, appropriately rated box connected to the other end
of the protector.
The ‘single ended’ protectors are useful for fi eld devices with
dual conduit ports; the fi eld wiring connects to one port while
the 1669 protector connects into the second - all connections
are made within the instrument’s wiring cavity. This installation
simplifi es the task of maintenance or of adding a protector into
an existing loop.
1669
1669-01, 1669-02
(For control room protector
use 1820-28-A1/A3)
1669-05, 1669-06
(For control room protector
use 1820-28-A1/A3)
EQUIP
1669
LINE
How To Order
1669 - XX
Model Number Designator
01 05
02 06
Asia-Pacifi c:
Tel: +886-2 2562-4117
Fax: +886-2 2562-4116
Europe:
Tel: +41-41 768 5555
Fax: +41-41 768 5510
The Americas:
Tel: +1-951 781-5500
Fax: +1-951 781-5700
www.bourns.com
1669-01, 1669-02 1669-05, 1669-06
REV. G 04/09
Specifi cations are subject to change without notice.
Customers should verify actual device performance in their specifi c applications
1669 Series – Transient Protector
MILLIMETERS
(INCHES)
DIMENSIONS:
100.00
(3.94)
300
(11.81)TYP.
1/2-14 NPT,
2 PLCS.
115.00
(4.53)
300
(11.81)TYP.
1/2-14 NPT
