NTTP Series

item NTTP Series

Various transformers
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Specifications Lightning Protection Transformer
Designed to protect equipment and human safety from abnormal voltages caused by lightning strikes or power line accidents.
Characteristics Impulse Voltage Withstand Capacity: 30KV (1.2 × 50μs)
Surge Transfer Ratio: 1/1000 (-60dB) or Less
Other 3-Phase Built-in Type
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Specifications
Lightning Resistant Series
Type NSTP NSTR NTTP NTTR
Appearance of installation Built-in type without case Stationary case available Built-in type without case Stationary case available
Number of phases Single Phase Single Phase 3-phase 3-phase
Linear 2-wire 2-wire 3 lines 3 lines
Frequency 50/60Hz 50/60Hz 50/60Hz 50/60Hz
Rated Input Voltage 100~400V (as specified) 100~400V (as specified) 100~400V (as specified) 100~400V (as specified)
Rated Output Voltage 100~400V (as specified) 100~400V (as specified) 100~400V (as specified) 100~400V (as specified)
Output Capacity 500~10KVA 500~10KVA 5~50KVA 5~50KVA
(By designation) (By designation) (By designation) (By designation)
Heat resistance class H H H H
Surge transition rate (balance) -60dB or less -60dB or less -60dB or less -60dB or less
（3KV 1.2×50μS） （3KV 1.2×50μS） （3KV 1.2×50μS） （3KV 1.2×50μS）
Impulse withstand voltage Primary side to secondary side/ground: 30KV (excluding arrester, 1.2 x 50μS) Primary side to secondary side/ground: 30KV (excluding arrester, 1.2 x 50μS) Primary side to secondary side/ground: 30KV (excluding arrester, 1.2 x 50μS) Primary side to secondary side/ground: 30KV (excluding arrester, 1.2 x 50μS)
Efficiency More than 90% below 5KVA More than 90% below 5KVA More than 90% below 5KVA More than 90% below 5KVA
5KVA or more, 95% or more 5KVA or more, 95% or more 5KVA or more, 95% or more 5KVA or more, 95% or more
Insulation resistance 100MΩ or more at DC1000V megger 100MΩ or more at DC1000V megger 100MΩ or more at DC1000V megger 100MΩ or more at DC1000V megger
Dielectric strength Primary side to secondary side/ground AC1000V (excluding arrester, 1 minute) Primary side to secondary side/ground AC1000V (excluding arrester, 1 minute) Primary side to secondary side/ground AC1000V (excluding arrester, 1 minute) Primary side to secondary side/ground AC1000V (excluding arrester, 1 minute)
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Product Specifications
NTTP Series Specifications
NTTP type 3-phase Built-in type Caseless
Model Output capacity KVA Body dimensions Mass Kｇ   Body dimensions Mass (kg)
(W×D×H)ｍｍ
NTTP-5K 5K 400×200×370 55 420×500×349 65
NTTP-10K 10K 430×270×430 90    
NTTP-15K 15K 440×290×460 115    
NTTP-20K 20K 460×300×460 130    
NTTP-30K 30K 500×300×550 170    
NTTP-50K 50K 580×360×550 250    
Specification
Overview Model Number of phases Capacity
Lightning protection transformer NSTP・NSTR Single Phase 500~10KVA
Lightning protection transformer NTTP・NTTR 3-phase 5~50KVA
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