Brochures and Data Sheets

DRS12031 DRS23031 DRS27731 DRS34631
Electrical
Characteristics
System Voltage 120/208, 230/400, 220/380, 277/480, 346/600 VAC
127/220 VAC 240/415 VAC 254/440 VAC
Type of Network TT-TN TT-TN TT-TN TT-TN
Modes of Protection L-N; N-PE L-N; N-PE L-N; N-PE L-N; N-PE
Nominal Voltage Un–120 V Un–230 V Un–277 V Un–346 V
Rated Voltage Uc–150 V Uc–320 V Uc–320 V Uc–420 V
(MCOV)
Nominal Discharge 1n–20 kA 1n–20 kA 1n–20 kA 1n–20 kA
Current (8 x 20 µs)
Maximum Imax–40 kA Imax–40 kA Imax–40 kA Imax–40 kA
Discharge Current
Voltage Protection Up–1.2 kV Up–1.6 kV Up—1.6 kV Up–2.0 kV
Level
Response Time TS–25 ns TS–25 ns TS–25 ns TS–25 ns
Relative Humidity 95% 95% 95% 95%
Isolation
Resistance > 103 MV > 103 MV > 103 MV > 103 MV
Test Standards
EN 61643-11 Type 2
IEC61643- 1:1998-02 Class II
Mechanical
Characteristics
Dimensions (Length x Width x Height) 70.8mm x 90.5mm x 68mm
I/O Connections By Screw Terminal: 4-25 mm
2
By Connection Bus
MOV Encapsulation Material Epoxy Resin
Disconnection Indicator Mechanical Indicator
Status Monitoring Remote Alarm Terminals
Mounting Symmetrical Rail (EN50022/DIN46277-3)
Operation Temperature Range -40°C to +85°C
Degree of Protection IP 20
Disconnection Device Thermal Cutoff System
Housing Material ABS/PA UL94V0
Performance Technical Specifications
TVSS/Surge Protective Devices (SPDs)
3
Nominal Voltage # of Metal Oxide Varistor Modules*
(U
n
) (XXX) (X)
120 0
230 1
240 2
277 3
346 4
480
# of Gas Tube Modules** Higher Rated Voltage***
(X) (Optional)
0Q
1
How to Specify the Appropriate Model
*MOV modules are typically one module per phase and may be wired L-N, L-G or N-G.
**Gas Tube modules typically used in the N-G mode for type TT grounding systems.
***Certain applications require higher rated components in order to survive frequent
voltage rises, in this case order a unit with a “Q” at the end of the part number.
Replacement modules available: Order DRS + U
n
+ M (for MOV) or G (for Gas Tube)
Features
■ Effectively handles high-energy transients
on TT, TN-C, TN-S and TN-C-S three-phase
power systems
■ SPD rated Type 2 in accordance with
EN 61643-11; Class I & II in accordance
with IEC 61643-1
■ Built-in thermal components disconnect
SPD from the power source to avoid
thermal runaway conditions
■ MOV only or MOV+Gas Tube models
available
■ Fast response time, high surge current
capability, low voltage protection levels
■ Visual inspection window on each module
indicates status
■ 3-pole terminal provides remote status
monitoring
■ DIN rail mounting and plug-in module
design allow for easy installation,
maintenance and replacement of
surge element
■ 5 year warranty
DRS Series
The DRS is a modular surge protective device (SPD) that is designed for easy
installation in control panels using standard DIN rail mounting brackets. The DRS
devices offer both normal and common surge protection up to 40 kA per phase.
Example: DRS 120 3 1 Q
TM
TM
TM
TM
TM
Technical Bulletins — High-Density Multiple Input Rack
NOTES:
1. SLAC UNIT PROVIDES ONE POWER AND TWO SIGNAL PROTECTION CIRCUITS.
2. SURGE DEVICES SHOULD BE GROUNDED LOCALLY WITH A GROUND ROD,
AND ALSO AT THE MAIN PANEL ELECTRICAL GROUND.
3. CHECK WITH EMERSON NETWORK POWER SURGE PROTECTION, INC. TO
DETERMINE IF OUTPUT CAN BE SURGE PROTECTED.
Technical Bulletins
22