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产品名称：
VFD1三线四相欠压继电器
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VFD1三相欠电压监测继电器
电压监控继电器这些继电器对三相或单相电源工况进行监控。这些继电器适用于对发电机供电的平衡或不平衡三相三线、三相四线和单相负荷，UPS、稳压器、反相器或（多用途）电路板进行监控，防止电压波动启动备用发电机、电机、运行交流故障单位、发电机组、AMF面板、PCC、配电柜和类似用途。
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型号及名称 |
UVF D1
欠压继电器，4W |
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供电电压 |
110/240/380/415/440V AC+20/-25 ％ ,50/60Hz |
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输出触点（伏特） |
1 CO |
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跳闸设置值 ( 伏特 )
欠压 |
75% － 95 ％ ( 可调 ) |
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过压 |
无 |
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跳闸延时 |
1 － 10 秒（可调） |
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电源开启延时 |
3.5 秒 ±1.5 秒 |
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重置模式 |
自动 |
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重量 |
175 克 |
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尺寸 (mm)
外形尺寸（长 × 宽 × 高） |
75×30.5×117.5 |
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安装尺寸（长 × 宽） |
68 中心对中心 |
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Introduction: |
| It is a 3 Phase 4 Wire Under Voltage Relay. It is best suitable for balanced or unbalanced 3 phase 4 wire loads powered by Generators, UPS, Stabilizers, Inverters or electricity Board (Utility). It is used to protect against fluctuating voltage to start standby generators, to operate mains failure units, Gensets, AMF Panels, PCC, Distribution boards and similar applications, where close regulation is required. Some of the other added advantages are easy & quick settings from front. User friendly indications. DIN Rail mounting & panel mounting facility. | |
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| Features: |
· Adjustable Under Voltage Settings (75%-95%)
· Available for any System Voltage.
· Auto / Manual Reset.
· Sleek DIN Rail mounted housing.
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| Technical Specifications: |
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Specifications |
| 1 |
System Supply |
110 / 240 / 380 / 415/440 V AC+20 / -25%, 50 / 60 Hz |
| 2 |
Output Relay Contact |
1 CO |
| 3 |
Trip Setting |
Under Voltage 75% - 95% (adjustable); Over Voltage N.A. |
| 4 |
Trip Time Delay |
1- 10 secs. (adjustable) |
| 5 |
Power on Delay |
3.5 secs ±1.5 secs |
| 6 |
Reset |
Auto |
| 7 |
Weight |
175 gms. |
| 8 |
Dimensions (mm) |
Overall (L x W x D) 76 x 30.5 x 117.5; Mounting 68 centre to centre | | |
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