Special Watch Hour Run Meter from China Suppliers and Factory - Accurate 0.5 Class, Six-Digit Display

Relay Output A

1. Voltage difference between UB and UGEN is less than pre-set value, S1 (△U × UN);

2. Frequency difference between FGEN and FBUS is less than pre-set value, S2 (△F);

3. Pre-set time difference before phase difference is 0°, S3 (Time);

When the above 3 conditions are satisfied, synchronized signal will be released.

Relay Output B

Voltage difference between UBB and UGEN is less than pre-set value S1 (△U × UN); phase difference between UBB and UGEN satisfies pre-set value S2 (△φ), and within the pre-set delay time (Delay), phase difference between UBB and UGEN is still satisfied with pre-set value S2 (△φ) — synchronized signal will be released.

a Integrated Net Insulation Monitor — Monitor with measuring system. Can be customized with self-detection.

Operating Modes:

🔵 "Monitor" mode: Ordinary monitoring — works as normal.

⚪ "Suspend" mode: Invalid — monitor does not check insulation resistance; pointer points at ∞.

🔴 "Test" mode: Self-detection — monitor does not check insulation resistance; pointer points at 0, alarm LED lit, relay activated.

b Separated Net Insulation Monitor — Monitor and measuring system are separated.

c Integrated Double Circuits Net Insulation Monitor — Monitors the insulation resistance of two ungrounded power networks simultaneously.

1) & 2) Relay (Load Resistance): DC 30V, 5A  |  AC 250V, 5A

NO Normally Open: When value is less than alarm limit, relay operates — normally open changes from break to closed.

NC Normally Close: When value is greater than alarm limit, relay operates. Until the value is less than alarm limit or meter power is cut off, relay releases — normally close contact breaks connection and closes.