Manufacturers
PACIFIC SCIENTIFIC Model 1251
Description
PACIFIC SCIENTIFIC Model 1251 AC Surge Arrester - General purpose lightning and surge protection, NEMP protection, Up to 10,000 operations surge life
Part Number
Model 1251
Price
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Manufacturer
PACIFIC SCIENTIFIC
Lead Time
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Category
Arrestors
Specifications
Gas Tube Isolation Voltage, Minimum 1251-00
200 Vac
Gas Tube Isolation Voltage, Minimum 1251-01
350 Vac
Gas Tube Isolation Voltage, Minimum 1251-02
475 Vac
Insulation Resistance
>109O
Maximum Continuous Operating Voltage 1251-00
150 Vac
Maximum Continuous Operating Voltage 1251-01
320 Vac
Maximum Continuous Operating Voltage 1251-02
440 Vac
Nominal System Voltage 1251-00
100-127 Vac
Nominal System Voltage 1251-01
220-277 Vac
Nominal System Voltage 1251-02
380-415 Vac
Operating Altitude
6000 m
Operating Temperature
-40 to +80C
Surge Life 1.5 kA, 8/20 µs
10,000 Operations
Surge Life 10 kA, 8/20 µs
50 Operations
Surge Life 30 kA, 8/20 µs
1 Operation
Surge Life 5 kA, 8/20 µs
500 Operations
System Frequency Rating
DC-20 kHz
System Power Rating (kVA)
Unlimited
Weight
0.2 kg
Features
- Fusing Coordination
Datasheet
Extracted Text
Pacific Scientific 6382 Rose Lane Carpinteria, CA 93013 PaCIFIC SCIEnTIFIC Cage 02101 Tel 805.576.5000 Fax 805.576.5020 Electro Kinetics Division Data Sheet www.psekd.com AC SURGE ARRESTER MODEL 1251 SERIES 1251-00 NSN not assigned ARRESTERS PRODUCED AFTER 2005/20/01 ARE COMPLIANT WITH 1251-01 NSN 6625-01-447-5157 EU ‘ROHS’ DIRECTIVE 2002/95/EC 1251-02 NSN 6625-01-444-9393 • Application General purpose lightning and surge protection on power circuits. Its compact size makes it suited for NEMP protection as well. • Technology Gas tube isolated MOV array allows the arrester to withstand higher value TOVs, while its low capacitance minimizes reactive leakage currents thus permitting use on higher frequency systems. • Model Number 1251-00 1251-01 1251-02 • Nominal System Voltage 100-127 Vac 220-277 Vac 380-415 Vac • Maximum Continuous Operating Voltage 150 Vac 320 Vac 440 Vac • Gas Tube Isolation Voltage, Minimum 200 Vac 350 Vac 475 Vac • Impulse Sparkover 1 kV/µs <800 V <950 V <1400 V 10 kV/µs <1100 V <1250 V <2500 V 1 kV/ns <2650 V <3000 V <5300 V • Discharge Voltage 1.5 kA, 8/20 µs <475 V <875 V <1250 V 5 kA, 8/20 µs <575 V <1025 V <1350 V 10 kA, 8/20 µs <650 V <1125 V <1500 V 20 kA, 8/20 µs <850 V <1250 V <1650 V • Surge Life 1.5 kA, 8/20 µs 10,000 Operations 5 kA, 8/20 µs 500 Operations 10 kA, 8/20 µs 50 Operations 30 kA, 8/20 µs 1 Operation • System Power Rating (kVA) Unlimited • System Frequency Rating DC-20 kHz • Capacitance <20 pF 9 • Insulation Resistance >10 Ω • Operating Altitude 6000 m • Operating Temperature -40 to +80C • Terminal Torque <6 N-m • Weight 0.2 kg • Symbol (IEC 117) LINE TERMINAL M8-1.25 THREAD 2 PL 57 INSULATING RING INSULATION 17 32 mm 12 Fusing Coordination - If it is desired to isolate the arrester at its end of life, a 5 cm link of .8 mm (#20 AWG) copper buss wire can be connected between the phase conductor and arrester’s line terminal. Alternately, a properly rated 60 amp fuse can be used. Smaller gauge wires or a lower fuse rating can cause ‘nuisance’ blowing during large but survivable surge events. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE TDS1251xx(g)
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Why buy from GID?
Quality
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Protection
Avoid the dangers of risky trading in the gray market
Access
Our network of suppliers is ready and at your disposal
Savings
Maintain legacy systems to prevent costly downtime
Speed
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